CN113518141A - Conference telephone and telephone conference system - Google Patents

Conference telephone and telephone conference system Download PDF

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Publication number
CN113518141A
CN113518141A CN202010277935.XA CN202010277935A CN113518141A CN 113518141 A CN113518141 A CN 113518141A CN 202010277935 A CN202010277935 A CN 202010277935A CN 113518141 A CN113518141 A CN 113518141A
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China
Prior art keywords
microphone
external
sound source
processor
array
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CN202010277935.XA
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Chinese (zh)
Inventor
李英博
刘志雄
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Shenzhen 3Nod Digital Technology Co Ltd
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Shenzhen 3Nod Digital Technology Co Ltd
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Priority to CN202010277935.XA priority Critical patent/CN113518141A/en
Publication of CN113518141A publication Critical patent/CN113518141A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0208—Noise filtering
    • G10L21/0216—Noise filtering characterised by the method used for estimating noise
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/10—Current supply arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
    • H04M3/568—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities audio processing specific to telephonic conferencing, e.g. spatial distribution, mixing of participants
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0208—Noise filtering
    • G10L21/0216—Noise filtering characterised by the method used for estimating noise
    • G10L2021/02161—Number of inputs available containing the signal or the noise to be suppressed
    • G10L2021/02166—Microphone arrays; Beamforming

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Quality & Reliability (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Computational Linguistics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Telephonic Communication Services (AREA)

Abstract

The invention discloses a conference phone, which comprises: a microphone for outputting a voice signal; the microphone array is used for picking up a voice signal sent by an external sound source and eliminating an echo of the voice signal; the processor is electrically connected with the loudspeaker and the microphone array, and is used for processing sound signals to be output through the loudspeaker and processing voice signals emitted by the external sound source to realize sound source positioning; the PoE configuration unit is electrically connected with the processor and used for being connected with an external PoE switch to achieve data transmission and power supply functions through the external PoE switch, directional response or beam forming is formed by arranging a microphone array to eliminate echoes so as to improve voice quality, and the power supply function and the voice data transmission function are achieved through a network cable, so that the installation process of a conference telephone is simplified, and user experience is improved.

Description

Conference telephone and telephone conference system
Technical Field
The invention relates to the technical field of communication, in particular to a conference telephone and a telephone conference system.
Background
With the continuous development of society and economy, the communication between indoor conferences and remote conferences carried out among people is more and more frequent, and when a teleconference is carried out at present, a traditional octopus telephone is usually adopted, but the noise elimination capability and the conversation quality of an octopus telephone system cannot meet the requirements of users, and a traditional octopus telephone power supply line is separated from a data transmission line, so that the teleconference system is complex to install, and inconvenience is brought to the users.
Content of application
The invention provides a conference telephone aiming at solving the technical problems of poor conference telephone conversation quality and complex installation of a conference telephone and a conference telephone system in the prior art, and aims to solve the problems of poor conference telephone conversation quality and complex installation of the conference telephone in the prior art.
The technical scheme adopted by the invention for solving the technical problem is as follows:
a conference phone, comprising:
a microphone for outputting a voice signal;
the microphone array is used for picking up a voice signal sent by an external sound source and eliminating an echo of the voice signal;
the processor is electrically connected with the loudspeaker and the microphone array, and is used for processing sound signals to be output through the loudspeaker and processing voice signals emitted by the external sound source to realize sound source positioning;
and the PoE configuration unit is electrically connected with the processor and is used for accessing an external PoE switch to realize data transmission and power supply functions through the external PoE switch.
Preferably, the PoE configuration unit includes:
the network port is used for being connected with the POE switch through a network cable and obtaining voltage and transmission data provided by the external PoE switch so as to realize data transmission and power supply functions through the external PoE switch;
and the voltage conversion unit is electrically connected between the network port and the processor and used for converting the voltage into a preset voltage and supplying power to the processor.
Preferably, the microphone array comprises a plurality of microphones and a center microphone, wherein:
the plurality of microphones are encircled into a circle;
the center microphone is disposed at the center of the circle such that the microphone array forms a beam pattern.
Preferably, the microphone array comprises a plurality of microphones, the plurality of microphones forming a square array.
Preferably, the processor is further configured to calculate a time delay of arrival of a sound source signal of each microphone in the microphone array, and perform sound source localization according to the time delay.
Further, in order to solve the above problem, the present invention also provides a teleconference system including:
the conference telephone is used for picking up a voice signal sent by an external sound source and sending the voice signal;
the PoE switch is electrically connected with the conference telephone through a network cable, is used for supplying power to the conference telephone and is also used for transmitting a voice signal sent by the external sound source; wherein the conference call comprises:
a microphone for outputting a voice signal;
the microphone array is used for picking up an external voice signal and eliminating echo;
the processor is electrically connected with the loudspeaker and the microphone array, and is used for processing sound signals to be output through the loudspeaker and processing the external voice signals to realize sound source localization;
and the PoE configuration unit is electrically connected with the processor and the external PoE switch and is used for realizing data transmission and power supply functions through the external PoE switch.
Preferably, the PoE configuration unit includes:
the network port is used for being connected with the POE switch through a network cable and obtaining voltage and transmission data provided by the external PoE switch so as to realize data transmission and power supply functions through the external PoE switch;
and the voltage conversion unit is electrically connected between the network port and the processor and used for converting the voltage into a preset voltage and supplying power to the processor.
Preferably, the microphone array comprises a plurality of microphones and a center microphone, wherein:
the plurality of microphones are encircled into a circle;
the center microphone is disposed at the center of the circle such that the microphone array forms a beam pattern.
Preferably, the microphone array comprises a plurality of microphones, the plurality of microphones forming a square array.
Preferably, the processor is further configured to calculate a time delay of arrival of a sound source signal of each microphone in the microphone array, and perform sound source localization according to the time delay.
Compared with the prior art, the implementation mode of the invention mainly has the following beneficial effects:
the microphone array is arranged to form directional response or beam forming to eliminate echoes so as to improve voice quality, further, the configuration unit is connected to an external PoE switch through a network cable, and a power supply function and a voice data transmission function are simultaneously realized through the network cable, so that the installation process of a conference telephone is simplified, and the user experience is improved.
Drawings
In order to illustrate the solution of the invention more clearly, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are some embodiments of the invention, and that other drawings may be derived from these drawings by a person skilled in the art without inventive effort.
Fig. 1 is a block diagram of a first embodiment of a conference call of the present invention.
Fig. 2 is a block diagram of a second embodiment of a conference call of the present invention.
Fig. 3 is a schematic diagram of an embodiment of a microphone array of the present invention.
Fig. 4 is a diagram of omnidirectional pickup response of a microphone according to the present invention.
Fig. 5 is a diagram illustrating the effect of beam forming of the microphone array of the present invention.
Fig. 6 is a schematic diagram of another embodiment of a microphone array of the present invention.
Fig. 7 is a schematic diagram of a first embodiment of a teleconferencing system of the present invention.
Fig. 8 is a schematic diagram of a second embodiment of a teleconferencing system of the present invention.
Reference numerals:
1. 1, 1 a-teleconferencing system, 10 a-conference telephone, 20a-PoE switch, 100 a-loudspeaker, 200 a-microphone array, 300 a-processor, 400a-PoE configuration unit.
Detailed Description
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention; the terms "comprising" and "having," and any variations thereof, in the description and claims of this invention and the description of the above figures, are intended to cover non-exclusive inclusions. The terms "first," "second," and the like in the description and in the claims, or in the drawings, are used for distinguishing between different objects and not necessarily for describing a particular sequential order.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
Referring to fig. 1, fig. 1 is a block diagram of an embodiment of a conference phone according to the present invention. In the present embodiment, the conference phone 10 includes a microphone 100, a microphone array 200, a processor 300, and a PoE configuration unit 400.
In the present embodiment, the microphone 100 is used to output a voice signal. The microphone array 200 is used to pick up a voice signal emitted from an external sound source and cancel an echo of the voice signal, and the microphone array 200 may form a directional response or beam forming. The processor 300 is electrically connected to the microphone 100 and the microphone array 200, and is configured to process a sound signal to be output through the microphone, and further configured to process a voice signal emitted from the external sound source to achieve sound source localization. A PoE (Power Over Ethernet) configuration unit 400 electrically connected to the processor 300, for accessing an external PoE switch to implement data transmission and Power supply functions through the PoE switch. In this embodiment, the PoE configuration unit 400 accesses an external PoE switch through a network cable. In other embodiments of the present invention, the PoE configuration unit 400 can access the external PoE switch through other means, such as wireless access. POE refers to a technology that, without any change in the existing ethernet cat.5 wiring infrastructure, can provide dc power for some IP-based terminals (such as IP phones, wireless lan access points AP, network cameras, etc.) while transmitting data signals. In this embodiment, the PoE configuration unit 400 is connected to an external PoE switch through a network cable, the PoE switch supplies power to the conference phone 100 through the network cable, and the conference phone 100 transmits voice data through the network cable. That is, the conference phone 100 simultaneously realizes the power supply function and the voice data transmission function through the network cable, and the installation process of the conference phone 100 is simplified.
The conference telephone provided by the invention has the advantages that the directional response is formed by arranging the microphone array or the echo is eliminated by beam forming, the voice quality is improved, further, the configuration unit is connected into an external PoE switch through a network cable, the power supply function and the voice data transmission function are realized through the network cable, the installation process of the conference telephone is simplified, and the user experience is improved.
Referring to fig. 2, fig. 2 is a block diagram of a conference phone 10a according to a second embodiment of the present invention. In the present embodiment, the conference phone 10a includes a microphone 100a, a microphone array 200a, a processor 300a, and a PoE configuration unit 400 a.
In the present embodiment, the microphone 100a is used to output a voice signal. The microphone array 200a is used for picking up a voice signal emitted from an external sound source and canceling an echo of the voice signal, and the microphone array 200a may form a directional response or beam forming. The processor 300a is electrically connected to the microphone 100a and the microphone array 200a, and is configured to process a sound signal to be output through the microphone, and further configured to process a voice signal emitted from the external sound source to achieve sound source localization. The PoE configuration unit 400a is electrically connected to the processor 300a, and is configured to access an external PoE switch through a network cable to implement data transmission and power supply functions through the PoE switch.
In this embodiment, the PoE configuration unit 400a includes a network port 401 and a voltage conversion unit 402. The network port 402 is connected to an external PoE switch through a network cable, and is configured to acquire a voltage provided by the external PoE switch and transmit data, so as to implement data transmission and power supply functions through the external PoE switch. The voltage conversion unit 402 is electrically connected between the network port 401 and the processor 402, and is configured to convert the voltage into a preset voltage and supply power to the processor 300 a. Therefore, the conference phone 10a can satisfy both the power supply function and the data transmission function by only configuring one network port 401, thereby simplifying the composition of the conference phone 10a and simplifying the installation process of the conference phone.
In the present embodiment, the microphone array 200a includes a plurality of microphones and a center microphone. Wherein the plurality of microphones encircle a circle, the center microphone is disposed at the center of the circle, such that the microphone array forms a beam pattern. Referring to fig. 3, fig. 3 is a schematic diagram of a microphone array 200a according to an embodiment of the invention. In the present embodiment, the microphone array 200a is composed of 5 microphones, and it should be understood that this is only for better explaining the present invention, and not as a limitation of the present invention. Specifically, the microphone array 200a includes a first microphone 201, a second microphone 202, a third microphone 203, a fourth microphone 204, and a fifth microphone 205 (center microphone). The first microphone 201, the second microphone 202, the third microphone 203 and the fourth microphone 204 are surrounded by a circle with a radius of 54mm, and it is understood that the radius of the circle can be set according to actual requirements. The fifth microphone 205 is located in the center of the circle. The first microphone 201, the second microphone 202, the third microphone 203 and the fourth microphone 204 should be transparent in space, and no barrier such as a partition plate should be provided between the microphones. Any object on the front surface of the microphone array 200a is ensured to be at least 5mm of transparent space with the microphone pickup surface. The back of the fifth microphone 205 also ensures sufficient through space. Referring to fig. 4, fig. 4 is a diagram illustrating an omnidirectional pickup response of a microphone. Each microphone is capable of equally responding to sound from all directions. The first microphone 201-the fifth microphone 205 are configured in a circular array, forming a beam pattern. Referring further to fig. 5, fig. 5 is a diagram illustrating the beamforming effect of a microphone array of the present invention, and it can be seen from fig. 5 that a microphone array 200a is configured as a circular array to be more sensitive to sound coming from one or more specific directions. In other embodiments of the present invention, the microphone array 200a includes a plurality of microphones that form a square array. Specifically, please refer to fig. 6, in which fig. 6 is a schematic diagram of a microphone array according to another embodiment of the present invention. In other embodiments of the present invention, the microphone array 200a includes a sixth microphone 206, a seventh microphone 207, an eighth microphone 208, and a ninth microphone 209. The sixth microphone 206, the seventh microphone 207, the eighth microphone 208 and the ninth microphone 209 are spaced apart by 35mm to form a square array. It is understood that the distance between each two microphones can be set according to actual requirements. Microphone array 200a may be configured as a square array that is more sensitive to sound from one or more particular directions. The sixth microphone 206, the seventh microphone 207, the eighth microphone 208, and the ninth microphone 209 should be spatially transparent, and no barrier such as a partition plate should be provided between the microphones. Any object on the front surface of the microphone array 200a is ensured to be at least 5mm of transparent space with the microphone pickup surface. In other embodiments of the present invention, the microphone array 200a may be configured as other arrays, which may be determined according to actual requirements.
In this embodiment, the processor 300a is further configured to calculate a time delay of arrival of the sound source signal of each microphone in the microphone array 200a, and perform sound source localization according to the time delay. Specifically, the microphones included in the microphone array 200a are configured as a circular array or a square array or other arrays, the arrival time of the sound source signal received by each microphone is different, the time delay of the arrival of the sound source signal of each microphone is calculated by the processor 300a, and the processor 300a determines the sound source position according to the time delay.
The conference telephone provided by the invention can meet the power supply function and the data transmission function at the same time by only configuring one network port, simplifies the composition of the conference telephone and the installation process of the conference telephone, and further, the microphone array forms a circular array or a square array by a plurality of microphones, can be more sensitive to the sound from one or more specific directions, and improves the voice communication quality.
Referring to fig. 7, fig. 7 is a schematic diagram of a first embodiment of the teleconference system of the present invention. In the present embodiment, the teleconference system 1 includes a teleconference phone 10 and a PoE switch 20. The conference phone 10 picks up a voice signal uttered by an external sound source and utters the voice signal. The PoE switch 20 is electrically connected to the conference phone 10 through a network cable, and is used for supplying power to the conference phone 10 and transmitting a voice signal emitted from an external sound source.
In the present embodiment, the conference phone 10 includes a microphone 100, a microphone array 200, a processor 300, and a PoE configuration unit 400. The microphone 100 is used to output a voice signal. The microphone array 200 is used to pick up a voice signal emitted from an external sound source and cancel an echo of the voice signal, and the microphone array 200 may form a directional response or beam forming. The processor 300 is electrically connected to the microphone 100 and the microphone array 200, and is configured to process a sound signal to be output through the microphone, and further configured to process a voice signal emitted from the external sound source to achieve sound source localization. The PoE configuration unit 400 is electrically connected to the processor 300, and is configured to connect to the PoE switch 20 through a network cable, so as to implement data transmission and power supply functions through the PoE switch. In this embodiment, the PoE configuration unit 400 is connected to the PoE switch 20 through a network cable, the PoE switch 20 supplies power to the conference phone 100 through the network cable, and the conference phone 100 transmits voice data through the network cable. That is, the conference phone 100 simultaneously realizes the power supply function and the voice data transmission function through the network cable, and the installation of the teleconference system 1 is simplified.
The conference call system provided by the invention has the advantages that directional response or beam forming is formed by arranging the microphone array to eliminate echoes so as to improve the voice quality, furthermore, the configuration unit is electrically connected with the PoE switch through the network cable, and the power supply function and the voice data transmission function are realized through the network cable, so that the installation of the conference call system is simplified, and the user experience is improved.
Referring to fig. 8, fig. 8 is a schematic diagram of a second embodiment of the teleconference system of the present invention. In the present embodiment, the teleconference system 1a includes a teleconference phone 10a and a PoE switch 20 a. The conference phone 10a picks up a voice signal uttered by an external sound source and utters the voice signal. The PoE switch 20a is electrically connected to the conference phone 10a through a network cable, and is used for supplying power to the conference phone 10a and transmitting a voice signal emitted from an external sound source.
In the present embodiment, the conference phone 10a includes a microphone 100a, a microphone array 200a, a processor 300a, and a PoE configuration unit 400 a. The microphone 100a is used to output a voice signal. The microphone array 200a is used for picking up a voice signal emitted from an external sound source and canceling an echo of the voice signal, and the microphone array 200a may form a directional response or beam forming. The processor 300a is electrically connected to the microphone 100a and the microphone array 200a, and is configured to process a sound signal to be output through the microphone, and further configured to process a voice signal emitted from the external sound source to achieve sound source localization. The PoE configuration unit 400a is electrically connected to the processor 300a, and is electrically connected to the PoE switch 20a through a network cable to implement data transmission and power supply functions through the PoE switch 20 a.
In this embodiment, the PoE configuration unit 400a includes a network port 401 and a voltage conversion unit 402. The network port 402 is connected to an external PoE switch through a network cable, and is configured to obtain a voltage provided by the external PoE switch 20a, and is further configured to transmit data, so as to implement data transmission and power supply functions through the PoE switch 20 a. The voltage conversion unit 402 is electrically connected between the network port 401 and the processor 402, and is configured to convert the voltage into a preset voltage and supply power to the processor 300 a. Therefore, the conference phone 10a can satisfy both the power supply function and the data transmission function by only configuring one network port 401, thereby simplifying the composition of the conference phone 10a and simplifying the installation process of the teleconference system 1.
In the present embodiment, the microphone array 200a includes a plurality of microphones and a center microphone. Wherein the plurality of microphones encircle a circle, the center microphone is disposed at the center of the circle, such that the microphone array forms a beam pattern. Referring to fig. 3, fig. 3 is a schematic diagram of a microphone array 200a according to an embodiment of the invention. In the present embodiment, the microphone array 200a includes a first microphone 201, a second microphone 202, a third microphone 203, a fourth microphone 204, and a fifth microphone 205 (center microphone). The first microphone 201, the second microphone 202, the third microphone 203 and the fourth microphone 204 are surrounded by a circle with a radius of 54mm, and it is understood that the radius of the circle can be set according to actual requirements. The fifth microphone 205 is located in the center of the circle. The first microphone 201, the second microphone 202, the third microphone 203 and the fourth microphone 204 should be transparent in space, and no barrier such as a partition plate should be provided between the microphones. Any object on the front surface of the microphone array 200a is ensured to be at least 5mm of transparent space with the microphone pickup surface. The back of the fifth microphone 205 also ensures sufficient through space. Referring to fig. 4, fig. 4 is a diagram illustrating an omnidirectional pickup response of a microphone. Each microphone is capable of equally responding to sound from all directions. The first microphone 201-the fifth microphone 205 are configured in a circular array, forming a beam pattern. Referring further to fig. 5, fig. 5 is a diagram illustrating the beamforming effect of the microphone array of the present invention, and as can be seen from fig. 4, the microphone array 200a is configured as a circular array to be more sensitive to sound coming from one or more specific directions.
In other embodiments of the present invention, the microphone array 200a includes a plurality of microphones that form a square array. Specifically, please refer to fig. 6, wherein fig. 6 is a schematic diagram of a microphone array according to another embodiment of the present invention. In other embodiments of the present invention, the microphone array 200a includes a sixth microphone 206, a seventh microphone 207, an eighth microphone 208, and a ninth microphone 209. The sixth microphone 206, the seventh microphone 207, the eighth microphone 208 and the ninth microphone 209 are spaced apart by 35mm to form a square array. It is understood that the distance between each two microphones can be set according to actual requirements. Microphone array 200a may be configured as a square array that is more sensitive to sound from one or more particular directions. The sixth microphone 206, the seventh microphone 207, the eighth microphone 208, and the ninth microphone 209 should be spatially transparent, and no barrier such as a partition plate should be provided between the microphones. Any object on the front surface of the microphone array 200a is ensured to be at least 5mm of transparent space with the microphone pickup surface. In other embodiments of the present invention, the microphone array 200a may be configured as other arrays, which may be determined according to actual requirements.
In this embodiment, the processor 300a is further configured to calculate a time delay of arrival of the sound source signal of each microphone in the microphone array 200a, and perform sound source localization according to the time delay. Specifically, the microphones included in the microphone array 200a are configured as a circular array or a square array or other arrays, the arrival time of the sound source signal received by each microphone is different, the time delay of the arrival of the sound source signal of each microphone is calculated by the processor 300a, and the processor 300a determines the sound source position according to the time delay.
The conference call system provided by the invention can meet the power supply function and the data transmission function at the same time by only configuring one network port, simplifies the composition of a conference call and the installation process of the conference call system, and further, the microphone array forms a circular array or a square array by a plurality of microphones, can be more sensitive to the sound from one or more specific directions, and improves the voice call quality.
It is to be understood that the above-described embodiments are only a few, rather than all, embodiments of the present invention, and that the appended drawings illustrate preferred embodiments of the invention and are therefore not to be considered limiting of its scope. This invention may be embodied in many different forms and, on the contrary, these embodiments are provided so that this disclosure will be thorough and complete. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and modifications can be made, and equivalents may be substituted for elements thereof. All equivalent structures made by using the contents of the specification and the attached drawings of the invention can be directly or indirectly applied to other related technical fields, and are also within the protection scope of the patent of the invention.

Claims (10)

1. A conference phone, comprising:
a microphone for outputting a voice signal;
the microphone array is used for picking up a voice signal sent by an external sound source and eliminating an echo of the voice signal;
the processor is electrically connected with the loudspeaker and the microphone array, and is used for processing sound signals to be output through the loudspeaker and processing voice signals emitted by the external sound source to realize sound source positioning;
and the PoE configuration unit is electrically connected with the processor and is used for accessing an external PoE switch so as to realize data transmission and power supply functions through the external PoE switch.
2. Conference call according to claim 1, characterized in that the PoE configuration unit comprises:
the network port is used for being connected with the POE switch through a network cable and obtaining voltage and transmission data provided by the external PoE switch so as to realize data transmission and power supply functions through the external PoE switch;
and the voltage conversion unit is electrically connected between the network port and the processor and used for converting the voltage into a preset voltage and supplying power to the processor.
3. The conference phone of claim 2, wherein the array of microphones comprises a plurality of microphones and a center microphone, wherein:
the plurality of microphones are encircled into a circle;
the center microphone is disposed at the center of the circle such that the microphone array forms a beam pattern.
4. The conference phone of claim 2, wherein the array of microphones comprises a plurality of microphones, the plurality of microphones forming a square array.
5. The conference phone of any of claims 3-4, wherein the processor is further configured to calculate a time delay of arrival of the sound source signal for each microphone of the microphone array, and perform sound source localization according to the time delay.
6. A teleconferencing system, comprising:
the conference telephone is used for picking up a voice signal sent by an external sound source and sending the voice signal;
the PoE switch is electrically connected with the conference telephone through a network cable, is used for supplying power to the conference telephone and is also used for transmitting a voice signal sent by the external sound source; wherein the conference call comprises:
a microphone for outputting a voice signal;
the microphone array is used for picking up an external voice signal and eliminating echo;
the processor is electrically connected with the loudspeaker and the microphone array, and is used for processing sound signals to be output through the loudspeaker and processing the external voice signals to realize sound source localization;
and the PoE configuration unit is electrically connected with the processor and the external PoE switch and is used for realizing data transmission and power supply functions through the external PoE switch.
7. Teleconference system according to claim 6, characterized in that the PoE configuration unit comprises:
the network port is used for being connected with the POE switch through a network cable and used for acquiring voltage and transmission data provided by the POE switch so as to realize data transmission and power supply functions through the POE switch;
and the voltage conversion unit is electrically connected between the network port and the processor and used for converting the voltage into a preset voltage and supplying power to the processor.
8. The teleconferencing system of claim 7, wherein the array of microphones comprises a plurality of microphones and a center microphone, wherein:
the plurality of microphones are encircled into a circle;
the center microphone is disposed at the center of the circle such that the microphone array forms a beam pattern.
9. The teleconferencing system of claim 7, wherein the microphone array comprises a plurality of microphones that form a square array.
10. The teleconferencing system of claim 6, wherein the processor is further configured to calculate a time delay of arrival of a sound source signal for each microphone of the microphone array and perform sound source localization according to the time delay.
CN202010277935.XA 2020-04-09 2020-04-09 Conference telephone and telephone conference system Pending CN113518141A (en)

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