U.S. patent application number 14/885046 was filed with the patent office on 2017-02-16 for automatically controlled directional speaker, and lamp thereof.
The applicant listed for this patent is UNITY OPTO TECHNOLOGY CO., LTD.. Invention is credited to KAI-CHENG CHUANG, CHING-HUEI WU.
Application Number | 20170048611 14/885046 |
Document ID | / |
Family ID | 57908385 |
Filed Date | 2017-02-16 |
United States Patent
Application |
20170048611 |
Kind Code |
A1 |
WU; CHING-HUEI ; et
al. |
February 16, 2017 |
AUTOMATICALLY CONTROLLED DIRECTIONAL SPEAKER, AND LAMP THEREOF
Abstract
An automatically controlled directional speaker includes a sound
amplifying device, an image capture device, a computing device, an
azimuth control motor and an amplitude control unit. The image
capture device is provided for detecting the status of surrounding
environment to generate image information, and the computing device
is communicatively coupled to the image capture device for
determining whether there is at least one face information in the
image information, and the azimuth control motor is coupled to the
sound amplifying device for controlling the azimuth of an output
sound of the sound amplifying device according to the face
information, and the amplitude control unit is communicatively
coupled to the sound amplifying device for controlling the volume
of the output sound of the sound amplifying device according to the
face information. The speaker may be combined with a lamp to form
an LED lamp with broadcasting and illumination functions.
Inventors: |
WU; CHING-HUEI; (NEW TAIPEI
CITY, TW) ; CHUANG; KAI-CHENG; (NEW TAIPEI CITY,
TW) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
UNITY OPTO TECHNOLOGY CO., LTD. |
NEW TAIPEI CITY |
|
TW |
|
|
Family ID: |
57908385 |
Appl. No.: |
14/885046 |
Filed: |
October 16, 2015 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
H04R 1/345 20130101;
H04R 5/02 20130101; H04N 5/2256 20130101; G06K 9/00228 20130101;
H04N 5/23219 20130101; H04S 7/303 20130101; H04R 2430/01 20130101;
H04R 2205/024 20130101; H04N 5/23238 20130101; H04R 2201/025
20130101; H04R 1/028 20130101 |
International
Class: |
H04R 1/34 20060101
H04R001/34; G06K 9/00 20060101 G06K009/00; H04N 5/232 20060101
H04N005/232; H04N 5/225 20060101 H04N005/225 |
Foreign Application Data
Date |
Code |
Application Number |
Aug 14, 2015 |
TW |
104126511 |
Claims
1. An automatically controlled directional speaker, comprising: a
sound amplifying device; an image capture device, for real time
detecting the status of surrounding environment to generate at
least one image information; a computing device, communicatively
coupled to the image capture device, for determining whether or not
the image information includes at least one face information; an
azimuth control motor, coupled to the sound amplifying device, for
controlling the sound amplifying device to output a sound in a
direction according to the face information; an amplitude control
unit, communicatively coupled to the sound amplifying device, for
controlling the volume of an output sound according to the face
information; and a movable waveguide structure for adjusting a
amplitude of a output sound, installed at a sound output position
of the sound amplifying device, and having a sound input port, a
sound output port, and a sound channel included between the sound
input port and the sound output port; and the sound input port and
the sound output port having adjustable relative aperture sizes
respectively, wherein the image capture device has an infrared
focusing device or an ultrasonic focusing device, the face
information includes a relative face distance and a relative face
azimuth; and the relative face distance and the relative face
azimuth are determined by the infrared focusing device or the
ultrasonic focusing device.
2-3. (canceled)
4. The automatically controlled directional speaker according to
claim 3, further comprising: an LED assist lamp, installed adjacent
to a side of the image capture device.
5. The automatically controlled directional speaker according to
claim 3, wherein the image capture device has a wide-angle camera
lens.
6. The automatically controlled directional speaker according to
claim 3, wherein the image capture device is installed on a pivot
member which is provided for the image capture device to adjust
both shooting angle and range in up, down, left and right
directions.
7. (canceled)
8. The automatically controlled directional speaker according to
claim 1, wherein the computing device performs an analysis by a
fuzzy algorithm
9. A light emitting diode (LED) lamp of the automatically
controlled directional speaker according to claim 1, characterized
in that the whole LED lamp is a bulb lamp.
10. The LED lamp according to claim 9, wherein the computing device
performs an analysis by a fuzzy algorithm
11. A light emitting diode (LED) lamp of the automatically
controlled directional speaker according to claim 1, characterized
in that the whole LED lamp is a down light.
12. The LED lamp according to claim 11, wherein the computing
device performs an analysis by a fuzzy algorithm
Description
TECHNICAL FIELD
[0001] The technical field relates to a broadcasting apparatus, and
more particularly to An automatically controlled directional
speaker and capable of automatically performing face recognition to
broadcast a sound to a designated person and combining with a lamp
to improve the convenience of living.
BACKGROUND
[0002] Sound amplifying device is a widely and commonly used device
capable of converting current frequency into sound to play various
types of audio files. Sound amplifying devices may be combined and
assembled to form a playing device such as a sound box.
[0003] The sound field of the sound amplifying device is limited by
its placing position. In other words, a user may hear a sound
coming from the sound amplifying device clearly only within a
certain range. Our sense of sound depends on an analysis result
processed by auditory sense of our brain, so that we can determine
and feel the elements such as the direction, distance, and volume
of a sound. For example, if a user wants to listen to a stereo or a
radio indoors, the sound heard by the user will vary when the user
is moving, since sound amplifying device is placed at a fixed
position. If the user moves away from the sound amplifying device,
the sound heard by the user will gradually become lower and more
unclearly due to the factors of an increased distance or an
deviated angle. To sense the sound in a full range, it is necessary
to install a plurality of sound amplifying devices at different
positions of a room or buy an expensive sound amplifying device
with a stereo surround sound effect. Either way incurs a high setup
cost.
[0004] When many people are in the room, the sound played by the
sound amplifying device may affect other people, since the sound
field range of the sound amplifying device cannot be controlled or
the sound cannot be listed by just the designated person only.
Therefore, the conventional sound amplifying device fails to
satisfy the user requirement and the effect of playing sound to a
designated person situated in an environment with many people or a
public place. To solve the aforementioned problem, a manual remote
control may be used to control the broadcasting direction of the
sound amplifying device, but this method requires users to keep
controlling the sound amplifying device manually according to the
moving status of a listening target, and the method of controlling
the direction of the sound amplifying device just achieves the
effect of hearing the sound from a listening target and cannot
adjust the sound effect of the listening target. In addition, if
other people are near the listening target, these people will be
affected. Obviously, the aforementioned method is not a good
solution.
[0005] Besides the sound amplifying device, lamp is also a
necessary electric/electronic device. From incandescent lamps at
early stage to LED lamps extensively used at present, various types
of lamps are installed indoor and outdoor for illumination, and the
lamps are connected to mains power to obtain the startup power, and
a control circuit is generally provided for adjusting the light
emission of the lamps. Although both sound amplifying device and
lamp are electronic devices, they are usually installed separately,
and their space occupying percentage is increased accordingly, so
that the using space available for users is decreased.
[0006] As science and technology advance rapidly, users have
increasingly higher demand for the quality of life, so that the
discloser of this disclosure further improves the performance and
practicality of the sound amplifying device and reduces the
occupied space while providing users a more convenient design of an
automatically controlled directional speaker and its lamp, in hope
of overcoming the aforementioned drawbacks of the prior art.
SUMMARY
[0007] Therefore, it is an objective of this disclosure to provide
an automatically controlled directional speaker that is capable of
detecting and identifying whether or not there is any person in the
surrounding environment and automatically guiding and broadcasting
sounds towards a designated person.
[0008] Another objective of this disclosure is to provide an LED
lamp combined with the aforementioned automatically controlled
directional speaker, so that the LED lamp has the effects of
playing sound in a direction towards a designated person
automatically and providing illumination at the same time.
[0009] To achieve the aforementioned and other objectives, this
disclosure provides an automatically controlled directional
speaker, and the speaker comprises: a sound amplifying device; an
image capture device, for real time detecting the status of
surrounding environment to generate at least one image information;
a computing device, communicatively coupled to the image capture
device, for determining whether or not the image information
includes at least one face information; an azimuth control motor,
coupled to the sound amplifying device, for controlling the sound
amplifying device to output a sound azimuth according to the face
information; and an amplitude control unit, communicatively coupled
to the sound amplifying device, for controlling the volume of an
output sound according to the face information. Preferably, the
computing device performs an analysis by a fuzzy algorithm.
[0010] Wherein, the image capture device has an infrared focusing
device or an ultrasonic focusing device, and the face information
includes a relative face distance and a relative face azimuth; and
the relative face distance and the relative face azimuth are
determined by the infrared focusing device or the ultrasonic
focusing device. Therefore, the relative distance and azimuth of a
person with respect to the automatically controlled directional
speaker can be determined to facilitate the sound amplifying device
to broadcast more accurately.
[0011] In addition, the speaker of this disclosure further
comprises an LED assist lamp installed adjacent to a side of the
image capture device to provide sufficient brightness to
surrounding environment and make the image information clearer.
[0012] To improve the image information of the image capture device
in order to cover a wider visual range of an image, the image
capture device includes a wide-angle camera lens, or the image
capture device is mounted onto a pivot member provided for
adjusting both shooting angle and range of the image capture device
in top, bottom, left and right sides.
[0013] In addition, the speaker of this disclosure further
comprises a movable waveguide structure installed at a sound output
position of the sound amplifying device and having a sound input
port, a sound output port, and a sound channel included between the
sound input port and the sound output port; and the sound input
port and the sound output port have adjustable relative aperture
sizes respectively; wherein the relative diameter and size of the
sound input port and the sound output port may be adjusted to
further adjust the volume of the output sound of the sound
amplifying device to provide a better listening effect.
[0014] In another preferred embodiment, this disclosure further
discloses an LED illumination lamp of the automatically controlled
directional speaker, characterized in that the whole LED lamp is a
bulb lamp or a down light including the computing device installed
therein and provided for performing an analysis by a fuzzy
algorithm. The speaker of is disclosure may also be combined with a
lamp, so that the lamp has both illumination and broadcasting
functions, and such lamp can broadcast sound to a designated person
automatically.
[0015] The speaker of this disclosure has the effects of detecting
and determining whether or not there are other people in the
surrounding environment, and automatically adjusting the output
sound to a designated person or area, so that a user can listen to
the sound very well even when the user is in a moving status. The
speaker may be set to allow a designated person to listen to the
sound, so as to prevent the sound from affecting other people. In
addition, the speaker of this disclosure may be combined with a
lamp to form an LED illumination lamp and provide both illumination
and broadcasting effects. With an automatic face detection
function, the LED illumination lamp can broadcast sounds towards a
designated person and improve the convenience of use.
BRIEF DESCRIPTION OF THE DRAWINGS
[0016] FIG. 1 is a schematic block diagram of a first preferred
embodiment of this disclosure;
[0017] FIG. 2 is a perspective view of the first preferred
embodiment of this disclosure;
[0018] FIG. 3 is a first schematic view showing an application of
the first preferred embodiment of this disclosure;
[0019] FIG. 4A is a second schematic view showing an application of
the first preferred embodiment of this disclosure;
[0020] FIG. 4B is a third schematic view showing an application of
the first preferred embodiment of this disclosure;
[0021] FIG. 5 is a perspective view of another implementation mode
of the first preferred embodiment of this disclosure;
[0022] FIG. 6 is a schematic view of a second preferred embodiment
of the present invention; and
[0023] FIG. 7 is a perspective view of another implementation mode
of the second preferred embodiment of this disclosure.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0024] The technical content of this disclosure will become
apparent with the detailed description of preferred embodiments and
the illustration of related drawings as follows.
[0025] With reference to FIGS. 1, 2, 3, 4A and 4B for a schematic
block diagram, a perspective view, and first to third schematic
views of applications of an automatically controlled directional
speaker 1 in accordance with the first preferred embodiment of this
disclosure respectively, the automatically controlled directional
speaker 1 comprises a sound amplifying device 10, an image capture
device 11, a computing device 12, an azimuth control motor 13 and
an amplitude control unit 14.
[0026] The image capture device 11 is provided for real time
detecting the status of surrounding environment to generate at
least one image information, and the computing device 12 is
communicatively coupled to the image capture device 11 for
determining whether or not there is at least one face information
in the image information generated by the image capture device 11.
Preferably, the image capture device 11 has an infrared focusing
device 111 or an ultrasonic focusing device, wherein the principle
of infrared light or ultrasound is used to detect the status of an
environment and obtain the image information. The face information
further includes a relative face distance and a relative face
azimuth, and the relative face distance and the relative face
azimuth are determined by the infrared focusing device 111 or the
ultrasonic focusing device. In this embodiment, the image capture
device 11 having the infrared focusing device 111 is used for
demonstration.
[0027] The azimuth control motor 13 is coupled to the sound
amplifying device 10 for controlling the azimuth of an output sound
of the sound amplifying device 10 according to the relative face
azimuth in the face information. The amplitude control unit 14 is
communicatively coupled to the sound amplifying device 10 for
controlling the volume of the output sound of the sound amplifying
device 10 according to the relative face distance in the face
information. Therefore, the automatically controlled directional
speaker 1 in accordance with this disclosure detects the
surrounding environment by the image capture device 11, and then
the computing device 12 analyzes the detected image information to
determine whether or not the face information exists. If there is
any face information, the relative face azimuth and the relative
face distance will be calculated, so that the azimuth control motor
13 and the amplitude control unit 14 can control the sound
amplifying device 10 to be aligned precisely at the position of
that person to play sounds and adjust the distance between that
person and the sound amplifying device 10 to adjust the volume of
the output sound. To broaden the range of viewed images in the
detection of the image information by the image capture device 11,
the image capture device 11 includes a wide-angle camera lens for
providing an accurate detection of the image information in a wide
space.
[0028] In this disclosure as described above, the image capture
device 11 captures the image information, and the computing device
12 analyzes the image information to determine whether or not the
face information is included. In short, face detection is used for
determining whether or not a face exists in an image by a
characteristic capture method and providing information such as the
face position and quantity. The face detection is mainly divided
into two major computing methods. One of the two computing methods
is based on characteristic and the other one is based learning. The
characteristic based method is subdivided into the following
methods. (1) Knowledge conditions constituting a typical face are
used for coding, and face characteristics are localized. Geometric
properties of a face figure are used for face region labeling. For
example, an oval shape is used as a basis for determining a face
figure. In other words, an edge detection method is used to capture
an oval region in an image and the oval region is further analyzed
to determine whether it is a face. (2) Face characteristics such as
the structural organization of a face, skin color, face symmetry
and distribution of face characteristic positions are used as a
basis for determining and writing an algorithm. (3) A template
matching method is used to compare an input image with a plurality
of existing face samples and calculate the correlation between the
image and the face samples to determine whether or not there is a
face image in the image. Such template matching method is also uses
face characteristics for the determination. Each of the
characteristics above is not used individually, but the
characteristics are combined and used in one or more methods to
perform face detection. For instance, a skin color method used for
detecting a face usually needs to combine the characteristics to
improve the accuracy due to the interference by background.
[0029] In the learning based method, the distribution of a face is
learned by neural network by capturing changes of the external
appearance of the face of a large quantity of trained images to
learn and modulate a plurality of models, and then comparing the
whole image by a fixed range to locate the position of the face.
Such method is relatively more difficult, since certain
characteristics are not obvious, and the non-obvious
characteristics may cause a failure of the detection.
[0030] For example, if skin color is used as an element for the
determination of an image face detection, and the characteristics
of a face figure is uses as an element for assisting the
determination, this method analyzes the color information of the
skin color of a face by using color division of an input image and
processes the color information by a morphologic algorithm to
locate an area that may have a face, and finally uses geometric
shape of the image to identify and eliminate an area that may not
be a face by the oval shape together with the aspect ratio of a
face profile, so as to label a face position. The aforementioned
method combines a plurality of algorithms and logical computation
to determine the face position. To eliminate the influence of
external environment factors such as the color information of an
image that may be affected by a light color or the color deviation
of an image capture equipment to result in a deviation of the
overall image information and the ideal value, the computing logic
may be adjusted as needed or other processing procedures may be
supplemented. To improve the accuracy of interpretation, the
technology of connected region may be used to further locate the
position and region of a plurality of faces in an image. In
summation of the description above, several algorithms and
characteristics are used to locate and determine the face position
and region in an image, and set up and eliminate the changing
conditions of the algorithms to cope with the difference of a face
due to light or angle.
[0031] In the setup of each of the aforementioned algorithms, the
determination procedure of each algorithm provides accurate
results. In short, such system is a system applying traditional set
theory and algorithm. In the traditional set theory, the relation
between a single element and a set is not a binary relation. As a
single element to the degree of membership of a set is binary, the
element is either equal to "0" or "1". Therefore, a face
recognition system built by any of the aforementioned algorithms
(including the algorithm of dividing an image, and the algorithm of
using face characteristics for determination) provides binary
results, such as "True" and "False", or "Yes" and "No".
[0032] The traditional set theory and its derived algorithms are
called a fuzzy algorithm which belongs to the area of fuzzy set
theory. In the fuzzy set theory, a characteristic function of the
traditional set theory is selected from either "0" or "1", such
that the membership function of the fuzzy set may be selected from
any value from 0 to 1. In other words, an element of the fuzzy set
may fall between 0 and 1 with respect to the degree of membership
of this set, so that fuzzy set has infinite membership functions to
cope with various different conditions and factors. Based on the
algorithm of the fuzzy set, the relation between an element and a
set is no longer binary, but a value of degree of membership is
assigned according to the degree similar to element and set. In the
computation of a large quantity of information or the
classification of each element into a range which is a fuzzy and
uncertain cluster, the fuzzy algorithm is a quick effective
computing mechanism. The computing device 12 of this disclosure
adopts a fuzzy algorithm to determine whether or not the image
information captured by the image capture device 11 has the face
information.
[0033] The computing device 12 of this disclosure analyzes the
inputted image information to form a plurality of elements and
applies the rule of thumb of human being to create each related
fuzzy set and obtain a value of the degree of membership of each
element with respect to the fuzzy sets, and then combines the
values of the degree of membership to derive whether or not the
face information is in the image information. Theoretically, a face
is generally composed of an oval-like profile, facial features and
skin color, so that after the computing device 12 receives the
image information, the fuzzy algorithm analyzes the value of the
degree of membership of each element of the image information with
respect to the aforementioned face characteristics, so as to
determine whether or not the face information is in the image
information.
[0034] According to the differences of the installing space and
environment of the automatically controlled directional speaker 1
and the desired broadcasting setup conditions, this disclosure may
have various models due to the difference of the setup conditions
to achieve the best broadcasting effect, and the general
classification is based on distance, angle, azimuth and number of
people, and each model executed corresponsive to the basis of each
classification is described below. As to the factor of distance, if
the automatically controlled directional speaker 1 comes with far,
middle, and near broadcasting modes, a user may set the
automatically controlled directional speaker 1 to broadcast to at
least one listener 2 in a specific distance. Since the definition
of a range of the far, middle, and near distance may not allow the
automatically controlled directional speaker 1 to obtain the
relative face distance, a quick determination of the range of the
distance between a person and the image capture device 10 is made.
Similarly, the fuzzy algorithm is used to derive that the face
information falls within what distance range by the rule of thumb.
In FIGS. 3 and 4A, the image capture device 11 automatically
detects the surrounding environment to form the image information.
After the computing device 12 analyzes the image information and
confirms that the image information includes the face information
(i.e. there is a person in the environment where the automatically
controlled directional speaker 1 is situated, and then the infrared
focusing device 111 or the ultrasonic focusing device determines
the relative face distance and the relative face azimuth in the
face information. If the selected mode of the automatically
controlled directional speaker 1 is to broadcast to the listener 2
at a near distance, the fuzzy algorithm will determine a value of
the degree of membership of the relative face distance
corresponsive to the far, middle, near distance of each fuzzy set
and will further determine whether or not the face information
belongs to the listener 2 at a closer distance. If yes, then the
sound amplifying device 10 will be driven to broadcast to the
listener 2 according to the selected near-distance playing mode so
as to provide the automatically controlled directional speaker 1
with a more diversified and accurate broadcasting effect. In
addition, the automatically controlled directional speaker 1 may
adjust the output amplitude and volume of the sound amplifying
device 10 according to the distance mode by the amplitude control
unit 14.
[0035] Similarly, the division of azimuth may be determined by the
aforementioned method. If a simple and easy division is used, the
azimuth control motor 13 may drives the sound amplifying device 10
to move in the up, down, left and right directions according to the
face information. For a more accurate differentiation, the azimuth
control motor 13 may be set to control the sound amplifying device
10 to move in the up, down, left and right directions, as well as
the upper left, lower left, upper right and upper left directions.
Since the definition of the aforementioned division of azimuth or
angle is not clear, the azimuth control motor 13 may be unable to
determine the relative face azimuth or determine the azimuth of the
listener 2 by the infrared focusing device 111 or the ultrasonic
focusing device. Similar to the determination of distance, the
fuzzy algorithm is used to obtain the content of the relative face
azimuth and the value of the degree of membership with respect to
each azimuth and angle of the fuzzy set, so that the azimuth
control motor 13 can drive the sound amplifying device 10 to be
adjusted to a better position for broadcasting.
[0036] Since the automatically controlled directional speaker 1 may
detect a plurality of face information in the environment or a
plurality of people in the environment, the automatically
controlled directional speaker 1 is designated to broadcast sounds
towards a particular person according to the setup mode. For
example, quantity is used as a basis for the setup, so that the
automatically controlled directional speaker 1 may be set to
broadcast sounds towards a place with more people or a place with
less people. In FIG. 4B, if the computing device determines that
there are many people in an environment and they are scattered, and
the number of people at a place is greater than the number of
people at another place, then the automatically controlled
directional speaker 1 will automatically broadcast sounds towards
the place with more people or the place with less people. In an
example as shown in FIG. 4B, the automatically controlled
directional speaker 1 broadcasts sounds towards an area with more
listeners 2. In another situation, the computing device 12
determines that there are people in an environment and different
relative face distances with respect to the automatically
controlled directional speaker 1, the aforementioned distance
determination method may be used together to achieve the effect of
broadcasting to one or more listeners 2 at a specific distance.
[0037] With reference to FIG. 5 for a perspective view of another
implementation mode of this disclosure, the automatically
controlled directional speaker 1 may be installed in a relatively
darker environment. To avoid the situation of having insufficient
light or low brightness to analyze and determine the contents of
the image information, this disclosure further comprises an LED
assist lamp 15 installed adjacent to a side of the image capture
device 11 to provide sufficient light to the environment, so that
the image information captured by the image capture device 11 has
sufficient brightness and clarity. The image capture device 11 may
be installed at a pivot member 16, and the pivot member 16 is
provided for the image capture device 11 to adjusting the angle and
range of shooting to up, down, left and right directions in order
to enhance the shooting range of the image capture device 11 and
provide a broader scope of the content of the image
information.
[0038] Wherein, this disclosure further comprises a movable
waveguide structure 17, installed at a sound output position of the
sound amplifying device 10, and having a sound input port 171, a
sound output port 172 and a sound channel 173 included between the
sound input port and the sound output port. The relative diameter
and size of the sound input port 171 and the sound output port 172
may be adjusted separately. Therefore, the output sound amplitude
of the sound amplifying device can be adjusted according to the
relative face distance by the amplitude control unit 14 first, and
then the relative diameter and size of the sound input port 171 and
the sound output port 172 are adjusted, and finally the amplitude
and volume of the sound outputted from the sound amplifying device
10 are changed by the movable waveguide structure 17, so that the
listeners can sense the sound better.
[0039] With reference to FIG. 6 for a perspective view of the
second preferred embodiment of this disclosure, the elements and
characteristics of this embodiment is substantially the same as
those of the first preferred embodiment, and thus they will not be
repeated. This preferred embodiment discloses an LED illumination
lamp 3 having the aforementioned automatically controlled
directional speaker 1 and characterized in that the LED
illumination lamp 3 is a bulb lamp, so that the LED illumination
lamp 3 can provide the illumination effect and the LED illumination
lamp 3 uses the image capture device 11 to automatically detect the
surrounding environment of the LED illumination lamp 3 to generate
the image information, and further uses the computing device 12 to
analyze whether or not there is the face information, or determine
whether or not there are people in the environment, and then
controls the azimuth, amplitude and volume of the output sound of
the sound amplifying device 10 according to the face information,
so that a designated person may hear the output sound of the sound
amplifying device 10 and improve the practicality of the LED
illumination lamp 3. As to the details of the automatically
controlled directional speaker 1 of this preferred embodiment are
similar to those of the first preferred embodiment, and thus they
will not be repeated.
[0040] With reference to FIG. 7 for a perspective view of another
implementation mode of the second preferred embodiment of this
disclosure, the LED illumination lamp 3 of this implementation mode
is a down light installed at an indoor ceiling, so that the
automatically controlled directional speaker 1 can provide indoor
lighting while using a face detection method to broadcast sounds
towards a designated person automatically from the sound amplifying
device 10 to improve the practicality of the LED illumination lamp
3.
[0041] In summation of the description above, the automatically
controlled directional speaker of this disclosure determines
whether or not there are any people in the surrounding environment
by face detection, and automatically redirects and broadcasts
sounds to an area where a person is there to achieve the
broadcasting with automatically controlled directivity. The image
capture device 11 detects and captures the surrounding environment
to generate the image information, and then the computing device 12
performs the face recognition analysis to obtain the face
information, while combining with the infrared focusing device 111
or the ultrasonic focusing device to determine the relative face
distance and the relative face azimuth in the face information to
facilitate controlling the sound output direction and the output
amplitude and volume of the sound amplifying device 10. Therefore,
this disclosure eliminates the inconvenience of the traditional
speaker with regard to distance and broadcasting effect, so that
users may have the best listening condition all the time.
Meanwhile, this disclosure comes with various sound playing modes
to cope with the installation environment or user requirements, and
the automatically controlled directional speaker 1 can broadcast
sound more accurately as needed. In addition, this disclosure may
be integrated with a lamp for use, so that the LED illumination
lamp 3 is capable of providing illumination and automatically
searching a person in order to broadcast sound to such person and
achieve the light and sound effects concurrently.
* * * * *