CN214544291U - Portable communication device - Google Patents
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- CN214544291U CN214544291U CN202120349015.4U CN202120349015U CN214544291U CN 214544291 U CN214544291 U CN 214544291U CN 202120349015 U CN202120349015 U CN 202120349015U CN 214544291 U CN214544291 U CN 214544291U
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Abstract
The utility model provides a portable communication device, which comprises a digital audio processing input module, a digital audio processing output module, a loudspeaking module, a communication interface and a plurality of radio modules; the input end of the digital audio processing output module is electrically connected with the communication interface, and the output end of the digital audio processing output module is electrically connected with the loudspeaker module; each sound receiving module comprises an acoustoelectric transducer, and each acoustoelectric transducer is arranged in different directions of the portable communication device to receive sounds in different directions; the output end of each radio module is respectively and electrically connected with the corresponding input end of the digital audio processing input module, and the digital audio processing input module comprises a sound mixing unit for mixing sound of sound signals output by the plurality of radio modules; the output end of the digital audio processing input module is connected with the communication interface; the communication interface is used for being electrically connected with the host computer to carry out communication and obtaining the working power supply of the portable communication device from the host computer. The portable communication device is small in size, convenient to carry and capable of improving the conference communication quality.
Description
Technical Field
The utility model relates to a conference call field especially relates to a portable calling equipment.
Background
With the popularization of network infrastructure and digitization technology and more frequent remote communication and collaboration, the demand of teleconferencing is increasing.
Many large enterprises realize teleconferencing by purchasing hardware conferencing systems in order to meet their telecommunication needs. However, these hardware conference systems are large in size, harsh in use conditions, and high in network requirements, and can only be placed in a conference room for use. For example, a common octopus conference telephone is large in size, inconvenient to carry about, and incapable of meeting the requirements of a teleconference in business trip;
many small conferences realize the teleconference anytime and anywhere through a mobile phone or a computer, but the volume of the communication between the mobile phone and the computer is small, the sound collection range is small, echoes easily occur, the situation that both parties of the communication cannot hear the sound clearly can occur slightly far away from the mobile phone and the computer, and the enterprise remote communication requirement can not be well met.
Although the prior art also shows more miniaturized portable conference call devices, the call performance is still difficult to meet the remote conference requirements.
Disclosure of Invention
Based on the current situation, the main object of the present invention is to provide a portable communication device, so that a teleconference party can hear speaking sounds in all directions more uniformly and widely, and conference communication quality and effect are improved; in addition, in a more preferable scheme, the loudspeaker of the portable communication device can emit larger sound volume, and a user can clearly hear the sound at the other end of the teleconference.
In order to achieve the above object, the utility model adopts the following technical scheme:
a portable communication device comprises a digital audio processing input module, a digital audio processing output module, a loud speaker module, a communication interface and a plurality of radio modules; the input end of the digital audio processing output module is electrically connected with the communication interface, and the output end of the digital audio processing output module is electrically connected with the loudspeaker module; each sound receiving module comprises an acoustoelectric transducer, and each acoustoelectric transducer is arranged in different directions of the portable communication device to receive sounds in different directions; the output end of each radio module is electrically connected with the corresponding input end of the digital audio processing input module respectively, and the digital audio processing input module comprises a sound mixing unit for mixing sound of sound signals output by the plurality of radio modules; the output end of the digital audio processing input module is connected with the communication interface; the communication interface is used for being electrically connected with a host computer to carry out communication and obtaining the working power supply of the portable communication device from the host computer.
Furthermore, the plurality of radio receiving modules at least comprise a first radio receiving module, a second radio receiving module and a third radio receiving module; the communication interface is positioned on a first side surface of the portable communication device; the acoustoelectric transducer of the first radio receiving module and the acoustoelectric transducer of the second radio receiving module are respectively positioned on the side surface of the portable communication device adjacent to the first side surface; the acoustoelectric transducer of the third radio module is positioned on the side of the portable communication device opposite to the first side; the speaker of the speaker module is located on the top surface of the portable communication device.
Furthermore, the communication interface is a telescopic plug; the portable communication device comprises at least two speaker modules, and the communication interface is positioned between electroacoustic transducers of the two speaker modules.
Further, the digital audio processing input module further comprises at least one of a network echo cancellation unit, a howling suppression unit and an automatic gain control unit.
Further, the acoustoelectric transducer is a digital silicon microphone.
In order to solve the above problem, the present invention further provides a portable communication device, which comprises a digital audio processing input module, a digital audio processing output module, a speaker module, a bluetooth module and a plurality of radio modules; the input end of the digital audio processing output module is electrically connected with the Bluetooth module, and the output end of the digital audio processing output module is electrically connected with the loudspeaker module; each sound receiving module comprises an acoustoelectric transducer, and each acoustoelectric transducer is arranged in different directions of the portable communication device to receive sounds in different directions; the output end of each radio module is electrically connected with the corresponding input end of the digital audio processing input module respectively, and the digital audio processing input module comprises a sound mixing unit for mixing sound of sound signals output by the plurality of radio modules; the output end of the digital audio processing input module is connected with the Bluetooth module; the Bluetooth module is used for communicating with a host.
Furthermore, the acoustoelectric transducer of each radio module is positioned on the side surface of the portable communication device;
the speaker of the speaker module is located on the top surface of the portable communication device.
Furthermore, the battery of the portable communication device is arranged on the bottom surface of the portable communication device.
Further, the digital audio processing input module further comprises at least one of a network echo cancellation unit, a howling suppression unit and an automatic gain control unit.
Further, the acoustoelectric transducer is a digital silicon microphone.
[ PROBLEMS ] the present invention
In this portable calling device, the sound in a plurality of position can be gathered to a plurality of acoustoelectric transducers, consequently the meeting participant's in each position of participating in the meeting speech sound homoenergetic enough be gathered fully, and then merge into audio signal all the way through the audio mixing unit for the teleconference side can hear the speech sound in each position more evenly, on a large scale, has promoted conference conversation quality and effect.
In addition, the portable communication device has small volume, is convenient to carry and can be used in various occasions; the communication interface can obtain the working power supply of the portable communication device from the host computer, and the portable communication device can be used in a plug-and-play mode without being charged.
In a further scheme, the communication interface is a telescopic plug, the portable communication device comprises at least two loudspeaking modules, and the communication interface is located between the loudspeakers of the two loudspeaking modules, so that more than two loudspeakers can provide larger communication volume on the one hand, and the interval between the loudspeakers can make the sound effect better, and the interval just provides a space for the communication interface to shrink and accommodate, compared with the situation that the communication interface is fixed and can not shrink and is not arranged between the loudspeakers, the portable communication device can keep the volume of the whole portable communication device smaller, and can provide better sound effect.
In addition, in a more preferable mode, since the portable telephone communication apparatus has a plurality of speakers, a large sound volume can be emitted, and the user can clearly hear the sound at the other end of the teleconference.
Other advantages of the present invention will be described in the detailed description, and those skilled in the art can understand the technical advantages brought by the technical features and technical solutions through the descriptions of the technical features and the technical solutions.
Drawings
Preferred embodiments according to the present invention will be described below with reference to the accompanying drawings. In the figure:
fig. 1 is a schematic diagram of a portable communicator and a host according to a preferred embodiment of the present invention;
FIG. 2 is a schematic block diagram of a system of the portable communication device and the host of FIG. 1;
FIG. 3 is a schematic diagram of a portable communicator and a host in accordance with another preferred embodiment of the present invention;
FIG. 4 is a cross-sectional schematic view of the portable communicator of FIG. 3;
FIG. 5 is a schematic block diagram of the portable communication device and the host of FIG. 3;
FIG. 6 is another schematic block diagram of the system of FIG. 1 in which the portable communicator and the host are configured;
FIG. 7 is another schematic block diagram of the system of FIG. 3 in which the portable communicator and the host are configured.
Digital audio processing module 110
Digital audio processing input module 112
Digital audio processing output module 114
Digital audio interface 115 (input of digital audio processing input module)
Acoustic-electric transducer 121
Analog-to-digital conversion unit 123
Digital-to-analog conversion unit 131
Electro-acoustic transducer 133
Bluetooth module 140
Startup and shutdown key 180
Detailed Description
Referring to fig. 1 and 2, a portable communication device 100 (or referred to as an external sound card) according to an embodiment of the present invention includes a digital audio processing module 110, a speaker module 130, a communication interface, and a plurality of radio modules 120, wherein the digital audio processing module 110 includes a digital audio processing input module 112 and a digital audio processing output module 114. In one embodiment, the present portable communication device 100 is substantially rectangular.
The communication interface is used for being inserted into the host 200 to be electrically connected with the host 200 for communication, acquiring the working power supply of the mobile phone from the host 200, and communicating with the host 200. The host 200 may be a mobile terminal, such as a mobile phone, a tablet computer, etc., and the host 200 may also be a notebook computer, etc. The communication interface includes a physical interface and a corresponding circuit for communicating with the host 200, and may be a USB interface plug (e.g., TYPE-A, TYPE-B, TYPE-C, MICRO USB, etc.), a ligang interface plug, etc. The communication interface may be separate from the digital audio processing module 110 or integrated into the digital audio processing module 110.
The input end of the digital audio processing output module 114 is electrically connected to the communication interface, the output end of the digital audio processing output module 114 is electrically connected to the speaker module 130, the audio signal received by the communication interface from the host 200 is sent to the digital audio processing output module 114 for processing (for example, noise reduction, gain control, etc.), and then sent to the speaker module 130, and the speaker module 130 converts the processed audio signal into sound. In one embodiment, the speaker module includes a digital-to-analog conversion unit 131, a power amplification unit 132, and an electroacoustic transducer 133 (i.e. a speaker), the digital audio processing output module 114 outputs a processed digital audio signal, the digital audio signal is converted into an analog audio signal through the digital-to-analog conversion unit 131, the analog audio signal is amplified through the power amplification unit 132 and then enters the electroacoustic transducer 133, and the electroacoustic transducer 133 converts the amplified analog audio signal into sound. As shown in fig. 2, a plurality of speaker modules 130 (e.g., a first speaker module and a second speaker module) may be adopted, each speaker module 130 includes the above-mentioned digital-to-analog conversion unit 131, a power amplification unit 132 and an electroacoustic transducer 133, so that the electroacoustic transducer 133 of the portable communication device can emit a larger volume, and a user can clearly hear a sound at the other end of the teleconference, and in some embodiments, the power of the electroacoustic transducer 133 of the portable communication device is 2-3 times that of a speaker of an ordinary mobile terminal (e.g., a mobile phone). Electro-acoustic transducer 133 may be a full range speaker.
Each sound receiving module 120 comprises an acoustoelectric transducer 121, and each acoustoelectric transducer 121 is arranged at different orientations of the portable communication device 100 to receive sound at different orientations; the output end of each radio module 120 is electrically connected to the corresponding input end 115 (i.e. digital audio interface) of the digital audio processing input module 112, and the digital audio processing input module 112 includes a mixing unit 113 for mixing the sound signals output by the plurality of radio modules 120; the output of the digital audio processing input module 112 is connected to the communication interface. Each of the acoustoelectric transducers 121 converts sound into an audio signal, and then the audio signal is sent to the digital audio processing input module 112, the audio mixing unit 113 of the digital audio processing input module 112 mixes the audio signals to combine them into an audio signal, and then the digital audio processing input module 112 sends the combined audio signal to the communication interface, and the communication interface transmits the audio signal to the host 200.
Through above-mentioned scheme, the sound in a plurality of position can be gathered to a plurality of acoustoelectric transducers 121, consequently the meeting participant's in each position of participating in the meeting speech sound homoenergetic enough is gathered, and then merges into audio signal all the way through mixing unit 113 for the teleconference side can hear the speech sound in each position more evenly, has promoted conference conversation quality and effect.
After receiving the audio signal, the communication interface corresponding to the host 200 sends the audio signal to the remote host through the network. Specifically, host 200 has installed thereon relevant teleconference software (APP) that transmits an audio signal transmitted from a remote host to portable communication device 100 via a communication interface, and also transmits an audio signal transmitted from portable communication device 100 via the communication interface to a remote host (the host may also install portable communication device 100), thereby realizing a conference call between the remote host and portable communication device 100.
In one embodiment, the plurality of radio modules 120 includes a first radio module, a second radio module, a third radio module, and a fourth radio module; the communication interface is located on a first side of the portable communication device 100; the acoustoelectric transducer 121 of the first radio receiving module and the acoustoelectric transducer 121 of the second radio receiving module are respectively positioned on the side surface of the portable communication device 100 adjacent to the first side surface; the acoustoelectric transducers 121 of the third and fourth sound receiving modules are located on the opposite side of the portable communication device 100 from the first side, and the speaker 133 of the speaker module 130 is located on the top surface of the portable communication device. Like this, avoid setting up acoustoelectric transducer 121 in the one side that host computer 200 connects to shelter from acoustoelectric transducer 121 with the side of host computer 200 contact and gather sound, and then avoid reducing the effect of diversified collection sound.
In one embodiment, the communication interface 111 is a retractable plug, the portable communication device 100 includes at least two speaker modules 130, and the communication interface 111 is located between the electroacoustic transducers 133 of the two speaker modules 130. When in use, the plug is pulled out and inserted into the communication interface socket of the host machine 200; after using up, can press this plug into the interval position between two electroacoustic transducer 133 in portable calling device 100, like this, more than two electroacoustic transducer 133 can provide bigger conversation volume on the one hand, and the electroacoustic transducer 133 that the interval set up can make the sound effect better, and this interval just provides the space that the shrink was held for communication interface 111, compare in that communication interface 111 is fixed can not shrink and not set up between electroacoustic transducer 133, this scheme can enough keep whole portable calling device 100's volume less, conveniently carry, can provide better sound effect simultaneously.
In one embodiment, the sound receiving module 120 further includes an analog-to-digital conversion unit 123 and an audio-to-digital conversion unit 122, the acoustoelectric transducer 121 converts sound into an analog audio signal, the analog audio signal is sent to the audio-to-digital conversion unit 123 after being amplified by the audio-to-digital conversion unit 122, the analog-to-digital conversion unit 123 converts the amplified analog signal into a digital audio signal, the digital audio signal is sent to the digital audio processing input module 112, and then the mixing unit 113 performs mixing processing on multiple paths of digital audio signals. In one embodiment, the acoustoelectric transducer 121 is a silicon microphone. In another embodiment, as shown in fig. 6, the radio module 120 is a digital silicon microphone, and the digital silicon microphone is integrated with a power amplifier unit 132 and an analog-to-digital conversion unit 123, so that the digital audio signal can be output to the digital audio processing input module 112.
In one embodiment, the digital audio processing input module 112 further comprises a network echo cancellation unit, a howling suppression unit, and an automatic gain control unit, which may all be implemented by the prior art. The automatic gain control unit is configured to automatically adjust the gain of the audio signal according to the decibel of the audio signal, for example, set a standard decibel range (e.g., 40 to 90dB), if the decibel of the audio signal is too large and is greater than an upper limit (e.g., 90 to 100dB) of the range, reduce the gain of the audio signal to a proper volume (e.g., 65dB ± 5dB), if the decibel of the audio signal is too small and is smaller than a lower limit (30 to 40dB) of the range, increase the gain of the audio signal to the proper volume, and if the decibel of the audio signal is lower than 30dB, do not perform processing. The network echo cancellation module is used for canceling echo caused by sound reception and speaker playback of the portable communication device 100 and the sound reception module 120 of the remote device during a communication process, and specifically, the echo is formed as follows: after the audio signal of the portable communication device 100 is transmitted to the remote device, the audio signal is converted into sound by the speaker, the sound is collected as an audio signal by the sound receiving module 120 of the remote device, and then the audio signal is transmitted to the portable communication device 100 and then transmitted to the speaker module 130 of the portable communication device 100 to make sound, and when a certain condition is satisfied (for example, when a time difference exists between front and rear audio frequencies, the sound is large), an echo is formed. The howling suppression module is used for suppressing howling caused by sound emitted from the sound reception module 120 and the speaker module 130 of the portable communication device 100, and specifically, the cause of the howling is as follows: in the portable communication device 100, the radio module 120 collects and amplifies sound to form a digital audio signal, the digital audio signal is transmitted to the remote speaker through the communication interface via the host 200 via the network to output sound, the digital audio signal is collected by the remote radio module to form an audio signal, the audio signal is transmitted to the portable communication device 100 via the network to be transmitted to the speaker module 130 to output sound, and when a certain condition is satisfied (for example, the time difference between front and rear audio frequencies is short), the speaker module 130 outputs sharp and harsh sound, that is, howling.
Referring to fig. 3, 4 and 5, a portable communication device 100 according to another embodiment of the present invention is substantially the same as the portable communication device 100 according to the embodiment of fig. 2, and the main differences include that the portable communication device 100 according to the embodiment of the present invention employs a bluetooth module 140 instead of the communication interface of fig. 2, and employs a battery 150 for power supply. Specifically, the portable communication device 100 includes a digital audio processing module 110, a speaker module 130, a bluetooth module 140, a battery 150, a charging interface 170, and a plurality of radio modules 120, wherein the digital audio processing module 110 includes a digital audio processing input module 112 and a digital audio processing output module 114. In one embodiment, the portable communication device 100 is substantially cylindrical.
The bluetooth module 140 is used for bluetooth communication with the host 200. The host 200 may be a mobile terminal, such as a mobile phone, a tablet computer, etc., and the host 200 may also be a notebook computer, etc. When the portable communication device is used, the Bluetooth communication of the host 200 can be started, and the portable communication device 100 is selected to be connected on the interface of the host 200, so that the Bluetooth communication is established. The bluetooth module 140 may be separate from the digital audio processing module 110, or may be integrated into the digital audio processing module 110.
The input end of the digital audio processing output module 114 is electrically connected to the bluetooth module 140, the output end of the digital audio processing output module 114 is electrically connected to the speaker module 130, the audio signal received by the bluetooth module 140 from the host 200 is sent to the digital audio processing output module 114 for processing, and then sent to the speaker module 130, and the speaker module 130 converts the processed audio signal into sound. In one embodiment, the speaker module includes a digital-to-analog conversion unit 131, a power amplification unit 132, and an electroacoustic transducer 133 (i.e. a speaker), the digital audio processing output module 114 outputs a processed digital audio signal, the digital audio signal is converted into an analog audio signal through the digital-to-analog conversion unit 131, the analog audio signal is amplified through the power amplification unit 132 and then enters the electroacoustic transducer 133, and the electroacoustic transducer 133 converts the amplified analog audio signal into sound. Electro-acoustic transducer 133 may be a full range speaker.
Each sound receiving module 120 comprises an acoustoelectric transducer 121, and each acoustoelectric transducer 121 is arranged at different orientations of the portable communication device 100 to receive sound at different orientations; the output end of each radio module 120 is electrically connected to the corresponding input end 115 of the digital audio processing input module 112, and the digital audio processing input module 112 includes a sound mixing unit 113 for mixing sound signals output by the plurality of radio modules 120; the output of the digital audio processing input module 112 is connected to the bluetooth module 140. Each of the acoustoelectric transducers 121 converts sound into an audio signal, the audio signal is sent to the digital audio processing input module 112, the mixing unit 113 of the digital audio processing input module 112 mixes the audio signals to combine the audio signals to form a channel of audio signal, the digital audio processing input module 112 sends the combined audio signal to the bluetooth module 140, and the bluetooth module 140 transmits the audio signal to the host 200.
Through above-mentioned scheme, the sound in a plurality of position can be gathered to a plurality of acoustoelectric transducers 121, consequently the meeting participant's in each position of participating in the meeting sound homoenergetic is gathered, and then merges into audio signal all the way through mixing unit 113 for the teleconference side can hear the speech sound in each position more evenly, has promoted the conference effect.
After receiving the audio signal, the bluetooth module corresponding to the host 200 sends the audio signal to the remote host through the network. Specifically, host 200 has installed thereon relevant teleconference software (APP) that transmits an audio signal transmitted from a remote host to portable communication device 100 via bluetooth module, and also transmits an audio signal transmitted from portable communication device 100 via bluetooth module 140 to a remote host (which may also install portable communication device 100), thereby realizing a conference call between the remote host and portable communication device 100.
In one embodiment, the portable communication device 100 includes five sound receiving modules, and the acoustoelectric transducers 121 of each sound receiving module are located on the side of the portable communication device 100, for example, evenly distributed on the side of the portable communication device 100; the speakers of the speaker module 130 are located on the top surface of the portable communication device 100, and the speaker module 130 is located in five sound receiving modules in the projection direction of the bottom surface.
In one embodiment, the battery 150 is disposed on the bottom surface of the portable communication device 100 and below the circuit board 160 (PCB) of the portable communication device 100, the bluetooth module 140, the audio processing module, etc. are disposed on the circuit board 160, the main control of the portable communication device 100 can also be integrated into the audio processing module, the charging interface 170 of the portable communication device 100 is disposed on the side of the portable communication device 100 near the bottom surface, the charging interface 170 can be a USB socket, such as a TYPE-C socket, etc., and the battery 150 can be charged through the charging interface 170. The portable communication device 100 may also be provided with an on/off button 180.
In one embodiment, the sound receiving module 120 further includes an analog-to-digital conversion unit 123 and an audio-to-digital conversion unit 122, the acoustoelectric transducer 121 converts sound into an analog audio signal, the analog audio signal is sent to the audio-to-digital conversion unit 123 after being amplified by the audio-to-digital conversion unit 122, the analog-to-digital conversion unit 123 converts the amplified analog signal into a digital audio signal, the digital audio signal is sent to the digital audio processing input module 112, and then the mixing unit 113 performs mixing processing on multiple paths of digital audio signals. In one embodiment, the acoustoelectric transducer 121 is a silicon microphone. In another embodiment, as shown in fig. 7, the radio module 120 is a digital silicon microphone, and the digital silicon microphone is integrated with a power amplifier unit 132 and an analog-to-digital conversion unit 123, so that the digital audio signal can be output to the digital audio processing input module 112.
In an embodiment, the digital audio processing input module 112 further includes a network echo cancellation unit, a howling suppression unit, and an automatic gain control unit, which may all adopt the prior art, as described in the foregoing embodiments, and are not described herein again.
It will be appreciated by those skilled in the art that the above-described preferred embodiments may be freely combined, superimposed, without conflict.
It will be understood that the above-described embodiments are illustrative only and not restrictive, and that various obvious and equivalent modifications and substitutions may be made in the details described herein by those skilled in the art without departing from the basic principles of the invention.
Claims (10)
1. A portable communication device comprises a digital audio processing input module, a digital audio processing output module and a loudspeaking module, and is characterized by also comprising a communication interface and a plurality of radio modules;
the input end of the digital audio processing output module is electrically connected with the communication interface, and the output end of the digital audio processing output module is electrically connected with the loudspeaker module;
each sound receiving module comprises an acoustoelectric transducer, and each acoustoelectric transducer is arranged in different directions of the portable communication device to receive sounds in different directions;
the output end of each radio module is electrically connected with the corresponding input end of the digital audio processing input module respectively, and the digital audio processing input module comprises a sound mixing unit for mixing sound of sound signals output by the plurality of radio modules;
the output end of the digital audio processing input module is connected with the communication interface;
the communication interface is used for being electrically connected with a host computer to carry out communication and obtaining the working power supply of the portable communication device from the host computer.
2. The portable communication device of claim 1,
the plurality of radio modules at least comprise a first radio module, a second radio module and a third radio module;
the communication interface is positioned on a first side surface of the portable communication device;
the acoustoelectric transducer of the first radio receiving module and the acoustoelectric transducer of the second radio receiving module are respectively positioned on the side surface of the portable communication device adjacent to the first side surface;
the acoustoelectric transducer of the third radio module is positioned on the side of the portable communication device opposite to the first side;
the speaker of the speaker module is located on the top surface of the portable communication device.
3. The portable communication device of claim 2,
the communication interface is a telescopic plug;
the portable communication device comprises at least two speaker modules, and the communication interface is positioned between electroacoustic transducers of the two speaker modules.
4. Portable communication device according to any of claims 1-3,
the digital audio processing input module further comprises at least one of a network echo cancellation unit, a howling suppression unit and an automatic gain control unit.
5. Portable communication device according to any of claims 1-3,
the acoustoelectric transducer is a digital silicon microphone.
6. A portable communication device comprises a digital audio processing input module, a digital audio processing output module and a loudspeaking module, and is characterized by also comprising a Bluetooth module and a plurality of radio modules;
the input end of the digital audio processing output module is electrically connected with the Bluetooth module, and the output end of the digital audio processing output module is electrically connected with the loudspeaker module;
each sound receiving module comprises an acoustoelectric transducer, and each acoustoelectric transducer is arranged in different directions of the portable communication device to receive sounds in different directions;
the output end of each radio module is electrically connected with the corresponding input end of the digital audio processing input module respectively, and the digital audio processing input module comprises a sound mixing unit for mixing sound of sound signals output by the plurality of radio modules;
the output end of the digital audio processing input module is connected with the Bluetooth module;
the Bluetooth module is used for communicating with a host.
7. The portable communication device of claim 6,
the acoustoelectric transducer of each radio module is positioned on the side surface of the portable communication device;
the speaker of the speaker module is located on the top surface of the portable communication device.
8. The portable communication device of claim 7,
the battery of the portable communication device is arranged on the bottom surface of the portable communication device.
9. Portable communication device according to any of claims 6 to 8,
the digital audio processing input module further comprises at least one of a network echo cancellation unit, a howling suppression unit and an automatic gain control unit.
10. Portable communication device according to any of claims 6 to 8,
the acoustoelectric transducer is a digital silicon microphone.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120349015.4U CN214544291U (en) | 2021-02-07 | 2021-02-07 | Portable communication device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120349015.4U CN214544291U (en) | 2021-02-07 | 2021-02-07 | Portable communication device |
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| CN214544291U true CN214544291U (en) | 2021-10-29 |
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| CN202120349015.4U Active CN214544291U (en) | 2021-02-07 | 2021-02-07 | Portable communication device |
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