CN213988295U - Recording equipment - Google Patents
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- CN213988295U CN213988295U CN202022721735.7U CN202022721735U CN213988295U CN 213988295 U CN213988295 U CN 213988295U CN 202022721735 U CN202022721735 U CN 202022721735U CN 213988295 U CN213988295 U CN 213988295U
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Abstract
The application provides a recording device, which comprises a processor, a microphone array connected with a first input end of the processor, and a loudspeaker connected with an audio output end of the processor, wherein a second input end of the processor is electrically connected with a sound source signal input end of the loudspeaker; the microphone array consists of a set number of microphones and is used for acquiring audio signals and sending the acquired audio signals to the processor; the loudspeaker is used for playing the audio signal output by the processor; the processor acquires a sound source signal input into the loudspeaker through the second input end, and performs echo cancellation and dereverberation processing on the audio signal acquired from the first input end by using the acquired sound source signal. This recording equipment function is abundant, can satisfy the recording demand of user's pluralism to recording effect is better.
Description
Technical Field
The utility model relates to an audio recording technical field, more specifically say, relate to a recording equipment.
Background
The recording equipment mainly comprises a microphone and an audio coding and decoding chip. The microphone is responsible for collecting analog audio signals, digitalizes the collected audio signals and sends the digitalized audio signals to the audio coding and decoding chip, and the audio coding and decoding chip codes the digital audio signals and sends the coded digital audio signals to the back-end processing equipment for storage or signal processing.
The recording equipment is simple in structure and single in function, can only record single-point audio, and cannot meet diversified recording requirements of users, such as sound source positioning, audio noise reduction, recording playing and the like.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a recording equipment, this recording equipment function is abundanter, can gain better recording effect, satisfies the abundant recording demand of user.
In order to achieve the above object, the utility model provides a following technical scheme:
an audio recording apparatus comprising:
the microphone array is connected with a first input end of the processor, the loudspeaker is connected with an audio output end of the processor, and a second input end of the processor is electrically connected with a sound source signal input end of the loudspeaker;
the microphone array consists of a set number of microphones and is used for acquiring audio signals and sending the acquired audio signals to the processor;
the loudspeaker is used for playing the audio signal output by the processor;
the processor acquires a sound source signal input into the loudspeaker through the second input end, and performs echo cancellation and dereverberation processing on the audio signal acquired from the first input end by using the acquired sound source signal.
Optionally, the number of microphones of the microphone array is at least 16; the recording equipment comprises at least 4 audio coding and decoding chips, each audio coding and decoding chip is at least connected with 4 microphones, and each audio coding and decoding chip is connected with a first input end of the processor through the same TDM bus;
and each audio coding and decoding chip is used for coding the audio data collected by the connected microphone and then sending the coded audio data to the processor.
Optionally, the number of the speakers is at least 2, and a sound source signal input end of each speaker is connected with an audio output end of the processor through a public address driving module;
and the public address driving module is used for receiving the audio signal output by the processor and driving a loudspeaker to play the audio signal.
Optionally, the recording device further includes a sound source direction indicator connected to the processor, and the processor is further configured to determine a sound source direction according to the audio signal acquired from the first input end, and send a sound source direction indicator signal to the sound source direction indicator;
the sound source direction indicating lamp is composed of a plurality of indicating lamps, and when the sound source direction indicating lamp receives a sound source direction indicating signal, the indicating lamp corresponding to the sound source direction indicated by the sound source direction indicating signal is turned on.
Optionally, the sound source direction indicator includes at least 16 LED lamps uniformly distributed on the same circular track, and LED driving chips connected to the LED lamps;
the LED driving chip is connected to an I2C interface of the processor and used for receiving the sound source direction indicating signal sent by the processor and driving the LED lamp to be turned on based on the received sound source direction indicating signal.
Optionally, the recording device further includes a USB interface, an ethernet interface, and an earphone socket interface, and the processor is connected to the earphone socket interface, the USB interface, and the ethernet interface, respectively, and is configured to send the audio signal obtained from the first input end to at least one of the earphone socket interface, the USB interface, and the ethernet interface.
Optionally, the earphone jack interface is connected to an audio codec chip through an I2S bus, and the audio codec chip is connected to an I2S interface of the processor through an I2S bus;
the Ethernet interface is connected with an Ethernet physical transceiver chip, and the Ethernet physical transceiver chip is connected with the RGMII interface of the processor.
Optionally, the recording device further includes a power line interface, and a power management module respectively connected to the USB interface, the ethernet interface, the power line interface, and each power-consuming component of the recording device;
the power management module is used for supplying power to each power-using component of the recording device by using the electric signal acquired from the USB interface, the Ethernet interface or the power line interface.
Optionally, the power management module includes a BUCK circuit, a POE circuit, a power switching circuit, and a power management unit;
the power line interface is connected with the power supply switching circuit through the BUCK circuit, the Ethernet interface is connected with the power supply switching circuit through the POE circuit, the USB interface is connected with the power supply switching circuit, the power supply switching circuit is connected with the power supply management unit, and the power supply management unit is respectively connected with each power utilization component of the recording equipment;
the power supply switching circuit is used for transmitting the electric signal from the USB interface, the Ethernet interface or the power line interface to the power supply management unit;
and the power supply management unit is used for controlling the power supply of each power utilization part of the recording equipment.
Optionally, the processor and the speaker are installed on the device motherboard, the microphone array is installed on the array motherboard, and the device motherboard is connected with the array motherboard through an FPC cable.
According to the above technical scheme, the utility model provides a recording equipment utilizes microphone array to gather audio signal, does benefit to and realizes all-round, more clear audio signal collection. The arrangement of the loudspeaker enables the recording device to play audio signals, and particularly can realize the function of recording and playing simultaneously. And the application of the multifunctional processor enables the recording equipment to realize local audio signal processing, and the processor can perform back-picking on the audio signal output to the loudspeaker for playing, so that the audio signal collected by the microphone array is subjected to echo cancellation and dereverberation processing, and the collected audio signal is enabled to be purer. The embodiment of the utility model provides a recording equipment function is abundant, can satisfy the recording demand of user's pluralism to recording effect is better.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a recording apparatus according to an embodiment of the present invention;
fig. 2 is another schematic structural diagram of a recording apparatus according to an embodiment of the present invention;
fig. 3 is a schematic view of a sound source direction indicator lamp provided by an embodiment of the present invention;
fig. 4 is a schematic diagram of a data output circuit structure of a recording apparatus according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a power supply circuit structure of a recording apparatus according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a dual-motherboard structure of a recording apparatus provided by an embodiment of the present invention.
Detailed Description
The embodiment of the utility model provides a recording equipment, this recording equipment are for conventional recording equipment, and the function is abundanter, can gain better recording effect, satisfies the abundant recording demand of user.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, the embodiment of the present invention provides a recording apparatus, including:
the microphone comprises a processor 1, a microphone array 2 connected with a first input end 11 of the processor 1, and a loudspeaker 3 connected with an audio output end 12 of the processor 1, wherein a second input end 13 of the processor 1 is electrically connected with a sound source signal input end of the loudspeaker 3;
the microphone array 2 consists of a set number of microphones and is used for acquiring audio signals and sending the acquired audio signals to the processor 1;
the loudspeaker 3 is used for playing the audio signal output by the processor 1;
the processor 1 obtains the sound source signal input to the loudspeaker 3 through the second input terminal 13, and performs echo cancellation and dereverberation processing on the audio signal obtained from the first input terminal 11 by using the obtained sound source signal.
Specifically, the number of the microphones of the microphone array 2, the installation positions of the microphones on the recording apparatus, and the like can be flexibly set, and the present embodiment is not limited thereto.
The working principle and function of the microphone array 2 can be referred to the working principle and function of the conventional array microphone, and the working principle and function of the conventional array microphone are not described in detail in this embodiment.
The microphone array 2 is applied, so that the recording equipment can collect clearer and more comprehensive audio signals.
The speaker 3 is an audio output structure of the recording apparatus, and can convert the audio signal output by the processor 1 into an analog audio signal for output, thereby implementing an audio playing function.
The addition of the loudspeaker 3 enables the recording equipment to play audio, especially audio signals collected by the microphone array 2 to be played and output, and the function of recording and playing is realized.
The number and installation positions of the speakers 3 can be flexibly set according to the structure of the recording apparatus.
The processor 1 at least comprises two signal input interfaces, namely a first input terminal 11 and a second input terminal 13, wherein the first input terminal 11 is connected with the microphone array 2 and is used for transmitting the audio signals collected by the microphone array 2 to the processor 1; the second input end 13 is electrically connected to the sound source signal input end of the speaker 3, and the processor 1 collects the sound source signal input to the speaker 3 through the second input end 13.
The processor 1 comprises at least one audio output interface, i.e. an audio output end 12, the audio output end 12 is connected with a sound source signal input end of the loudspeaker 3, and the processor 1 sends an audio signal to the loudspeaker 3 through the audio output end 12 so as to enable the loudspeaker 3 to play audio.
It will be appreciated that the processor 1 sends an audio signal to the loudspeaker 3 via the audio output terminal 12 and then collects a sound source signal input to the loudspeaker 3 via the second input terminal 13, so as to realize the back-collection of the audio signal sent to the loudspeaker 3.
The audio played by the speaker 3 may affect the audio signal acquisition of the microphone array 2, that is, while the microphone array 2 acquires the target audio, the audio played by the speaker 3 output by the processor 1 may be acquired by the microphone array 2, so that the audio signal acquired by the microphone array 2 may include the audio played by the speaker 3 in addition to the target audio, and whether the audio played by the speaker 3 is the audio acquired by the microphone array 2 or not, the audio signal acquired by the microphone array 2 may include noise, that is, the audio signal acquired by the microphone array 2 includes echo and/or reverberation.
In order to cancel echo and reverberation in the audio signal collected by the microphone array 2, the present embodiment sets that the processor 1 described above is a processor having echo cancellation and dereverberation functions.
The processor 1 performs echo cancellation and dereverberation processing on the audio signal acquired from the first input end 11 by using the sound source signal acquired from the second input end and input to the speaker 3, that is, performs echo cancellation and dereverberation processing on the audio signal acquired by the microphone array 2, so as to obtain a purer audio signal.
Further, the processor 1 may be a processor having functions of sound source localization, sound source role separation, and the like.
The functional implementation processes of the processor 1, such as the specific processing processes of echo cancellation and dereverberation processing, can be referred to the echo cancellation and dereverberation processing processes in the prior art, and the detailed description of this embodiment is omitted.
It is visible through the introduction, the embodiment of the utility model provides a recording equipment utilizes microphone array to gather audio signal, does benefit to and realizes all-round, more clear audio signal collection. The arrangement of the loudspeaker enables the recording device to play audio signals, and particularly can realize the function of recording and playing simultaneously. And the application of the multifunctional processor enables the recording equipment to realize local audio signal processing, and the processor can perform back-picking on the audio signal output to the loudspeaker for playing, so that the audio signal collected by the microphone array is subjected to echo cancellation and dereverberation processing, and the collected audio signal is enabled to be purer. The embodiment of the utility model provides a recording equipment function is abundant, can satisfy the recording demand of user's pluralism to recording effect is better.
Illustratively, the microphone array 2 has at least 16 microphones, so as to facilitate more omni-directional audio signal acquisition.
At least 4 audio decoding chips are arranged in the recording device and used for coding audio signals collected by each microphone of the microphone array 2 and sending the coded audio data to the processor 1.
As a preferred arrangement, referring to fig. 2, the embodiment of the present invention provides 16 microphones for the microphone array 2, and simultaneously provides 4 audio decoding chips codec 0-3 inside the recording device, where each audio decoding chip includes 4 channels of analog-to-digital converters ADC, and each channel of ADC is connected to one microphone.
The audio decoding chips are connected in parallel on the same TDM bus, and the TDM bus is connected to the first input terminal 11 of the processor 1. Whereas the sound recording apparatus of the present embodiment receives the audio signals collected by the 16 microphones of the microphone array 2 by the 4 audio decoding chips, the present embodiment uses the TDM16 bus to transmit the audio signals encoded by the 4 audio decoding chips to the processor 1. Each audio codec chip is fixed in time slots of the TDM bus.
The number of the loudspeakers 3 is at least 2, the sound source signal input end of each loudspeaker 3 is connected with the output end of the sound amplification driving module, and the input end of the sound amplification driving module is connected with the audio output end 12 of the processor. The loudspeaker driving module receives audio data from the audio output end 12 of the processor and then drives each loudspeaker to play the audio signal.
As a preferable arrangement, referring to fig. 2, the present embodiment provides the above-described recording apparatus with 2 speakers 3. The sound source signal received at the sound source signal input of the respective loudspeaker 3 is transmitted to the processor 1 via the connection between the respective sound source signal input and the second input 13 of the processor 1.
Illustratively, the processor 1 uses a 6-core a7 processor to obtain 16 microphone signals collected by the microphone array 2 through the first input terminal 11, and simultaneously, the processor 1 obtains the back-sampled signals of the 2 speakers 3 through the second input terminal 13. The processor 1 can process 18 paths of audio signals in real time, and realize echo cancellation and dereverberation processing on the audio signals acquired by the microphone array, or carry out processing such as sound source positioning and the like. The bandwidth of the audio data processed by the processor 1 is reduced to 1/16 of the original audio signal collected by the microphone array 2, which is beneficial for the recording device to output the recording data more efficiently.
The processor 1 in the sound recording apparatus provided in this embodiment may also be a processor with a sound source localization function, where the processor 1 implements the sound source localization function according to the audio signals collected by each microphone of the microphone array 2, and a specific localization process thereof may refer to a conventional sound source localization scheme based on a microphone array, and details of this embodiment are not described again.
Based on the sound source localization function of the processor 1, the sound recording apparatus proposed in the present embodiment further includes a sound source direction indicator lamp connected to the processor 1.
The sound source direction indicator lamp is composed of a plurality of indicator lamps, different indicator lamps correspond to different sound source directions, for example, when the indicator lamp corresponding to a certain direction is turned on, and the indicator lamps corresponding to other directions are turned off, the direction corresponding to the turned-on indicator lamp is the sound source direction.
When the processor 1 locates the sound source direction according to the audio signals collected by the microphone array 2, a sound source direction indicating signal is sent to the sound source direction indicating lamp, and the sound source direction indicating signal is used for indicating the sound source direction indicating lamp to turn on the indicating lamp corresponding to the sound source direction.
Correspondingly, when the sound source direction indicating lamp receives the sound source direction indicating signal, the sound source direction information is analyzed from the sound source direction indicating signal, and then the indicating lamp corresponding to the sound source direction is lightened.
Illustratively, each indicator light included in the sound source direction indicator light may be a 3-color (red, green, blue) LED light, and the indicator light may emit light in different colors, i.e., may be lit in various colors.
Then, when the sound source direction indicator lamp described above indicates the sound source direction, it can be realized by controlling the indicator lamp corresponding to the sound source direction to be lit in a set color, in addition to indicating the sound source direction with the lit indicator lamp. For example, the indicator light corresponding to the sound source direction may be controlled to be turned on in green, and the indicator light corresponding to the non-sound source direction may be controlled to be turned on in red.
As an optional setting mode, in this embodiment, at least 16 LED lamps and one LED driving chip are provided for the recording apparatus to form a sound source direction indicator lamp. Illustratively, as shown in fig. 3, 16 LED lamps are uniformly arranged on the same circular track, and each LED lamp is connected to the same LED driving chip. The LED driving chip is connected to an I2C interface of the processor 1, receives the sound source direction indicating signal transmitted from the processor 1 through the interface, and then drives an indicator lamp corresponding to the sound source direction among the sound source direction indicating lamps to be turned on or to be turned on in a set color based on the received sound source direction indicating signal.
Preferably, the annular sound source direction indicator shown in fig. 3 is installed on the top surface of the recording device, and when the recording device is placed vertically, the LED lamps of the sound source direction indicator are on the same horizontal plane. The 16 LED lamps are dispersedly pointed to all directions in the range of 360 degrees on the horizontal plane, and when a certain direction is the sound source direction, the LED driving chip drives one or more LED lamps corresponding to the direction to be lightened or lightened in a set color.
Referring to fig. 4, the sound recording apparatus provided in this embodiment is provided with a USB interface 100, an ethernet interface 110 and a headphone socket interface 120, and the processor 1 is respectively connected to the USB interface 100, the ethernet interface 110 and the headphone socket interface 120, so that the audio signal from the microphone array 2 acquired from the first input terminal 11 can be transmitted to at least one of the USB interface 100, the ethernet interface 110 and the headphone socket interface 120, so that the audio signal in digital form can be acquired through the USB interface 100 and the ethernet interface 110 of the sound recording apparatus, and the analog audio can be listened to through the headphone socket interface 120 by using headphones.
The earphone jack interface 120 is connected to an audio codec chip 130 through an I2C bus, and the audio codec chip 130 is connected to an I2C interface of the processor 1 through an I2C bus. The audio codec chip 130 receives the audio signal output by the processor 1, decodes the audio signal, and sends the decoded audio signal to the headphone jack interface 120 for output.
The ethernet interface 110 is connected to an ethernet physical transceiver chip 140, and the ethernet physical transceiver chip 140 is connected to the RGMII interface of the processor 1.
The USB interface 100 is connected to a USB port of the processor 1 via a USB bus.
Referring to fig. 5, the sound recording apparatus of the present embodiment is further provided with a power line interface 150, and a power management module 160, where the power management module 160 is respectively connected to the USB interface 100, the ethernet interface 110, and the power line interface 150, and the power management module 160 is further connected to each power-consuming component of the sound recording apparatus.
The USB interface 100, the ethernet interface 110, and the power line interface 150 can be used as power supply ports of the recording apparatus, respectively obtain electric energy through an external USB power line, an external ethernet line, and an external power line, and transmit the obtained electric energy to the power management module 160 in the form of an electrical signal.
The power management module 160 utilizes the electrical signals received from the USB interface 100, the ethernet interface 110, or the power line interface 150 to supply power to the various power-consuming components of the audio recording device.
The power management module 160 includes a BUCK circuit 1601, a POE circuit 1602, a power switching circuit 1603, and a power management unit 1604.
The power line interface 150 is connected to the power switching circuit 1603 through the BUCK circuit 1601, the ethernet interface 110 is connected to the power switching circuit 1603 through the POE circuit 1602, the USB interface 100 is directly connected to the power switching circuit 1603, the power switching circuit 1603 is connected to the input of the power management unit 1604, and the output of the power management unit 1604 is connected to each power-consuming component of the recording device.
The power switching circuit 1603 implements a power supply interface selection function, which implements on/off of a circuit between the USB interface 100, the ethernet interface 110, or the power line interface 150 and the power management unit 1604 by a switching operation of an internal relay, so that an electrical signal from the USB interface 100, the ethernet interface 110, or the power line interface 150 can be transmitted to the power management unit 1604.
Since the recording device is a low power electronic device and requires a low voltage, the voltage of the electrical signals transmitted to the power switching circuit 1603 through the USB interface 100, the ethernet interface 110, and the power line interface 150 is 5V.
The power management unit 1604 is used for controlling the power supply to each of the power consuming components of the recording apparatus, such as voltage control and power supply time control.
The multi-port power supply scheme is adopted for the recording equipment provided by the embodiment, so that the power supply mode of the recording equipment is greatly enriched, and the recording equipment can work in more scenes.
As an exemplary setting manner, the inside of the sound recording apparatus proposed by this embodiment adopts a dual-motherboard structure arrangement. Referring to fig. 6, the processor 1 and the speaker 3, as well as the USB interface 100, the ethernet interface 110, the headphone jack interface 120, the power line interface 150, the power management module, the memory, the keys, and the like, are disposed on the device motherboard S1; and the microphone array, the audio decoding chip, the sound source direction indicating lamp and the like are uniformly arranged on the array mainboard S2.
ZIP connectors are respectively arranged on the equipment main board S1 and the array main board S2, and the ZIP connectors of the equipment main board and the ZIP connectors of the array main board are connected through FPC cables S3, so that data transmission between the equipment main board S1 and the array main board S2 is realized.
It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other. The modules and sub-modules in the device and terminal of each embodiment of the application can be combined, divided and deleted according to actual needs, and the features described in each embodiment can be replaced or combined.
In the embodiments provided in the present application, it should be understood that the disclosed terminal and device may be implemented in other manners. For example, a module or sub-module may be divided into only one logical function, and an actual implementation may have another division, for example, multiple sub-modules or modules may be combined or integrated into another module, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or modules, and may be in an electrical, mechanical or other form.
The modules or sub-modules described as separate parts may or may not be physically separate, and parts that are modules or sub-modules may or may not be physical modules or sub-modules, may be located in one place, or may be distributed over a plurality of network modules or sub-modules. Some or all of the modules or sub-modules can be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
In addition, each functional module or sub-module in the embodiments of the present application may be integrated into one processing module, or each module or sub-module may exist alone physically, or two or more modules or sub-modules may be integrated into one module.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of additional like elements in the article or device comprising the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. An audio recording apparatus, comprising:
the microphone array is connected with a first input end of the processor, the loudspeaker is connected with an audio output end of the processor, and a second input end of the processor is electrically connected with a sound source signal input end of the loudspeaker;
the microphone array consists of a set number of microphones and is used for acquiring audio signals and sending the acquired audio signals to the processor;
the loudspeaker is used for playing the audio signal output by the processor;
the processor acquires a sound source signal input into the loudspeaker through the second input end, and performs echo cancellation and dereverberation processing on the audio signal acquired from the first input end by using the acquired sound source signal.
2. The audio recording device of claim 1, wherein the microphone array has a number of microphones of at least 16; the recording equipment comprises at least 4 audio coding and decoding chips, each audio coding and decoding chip is at least connected with 4 microphones, and each audio coding and decoding chip is connected with a first input end of the processor through the same TDM bus;
and each audio coding and decoding chip is used for coding the audio data collected by the connected microphone and then sending the coded audio data to the processor.
3. The audio recording device according to claim 1, wherein the number of the speakers is at least 2, and the sound source signal input end of each speaker is connected with the audio output end of the processor through a public address driving module;
and the public address driving module is used for receiving the audio signal output by the processor and driving a loudspeaker to play the audio signal.
4. The audio recording device of claim 1, further comprising a sound source direction indicator light connected to the processor, wherein the processor is further configured to determine a sound source direction from the audio signal obtained from the first input and send a sound source direction indicator signal to the sound source direction indicator light;
the sound source direction indicating lamp is composed of a plurality of indicating lamps, and when the sound source direction indicating lamp receives a sound source direction indicating signal, the indicating lamp corresponding to the sound source direction indicated by the sound source direction indicating signal is turned on.
5. The recording apparatus of claim 4, wherein the sound source direction indicator lights comprise at least 16 LED lights evenly distributed on the same circular track, and LED driving chips connected to the LED lights;
the LED driving chip is connected to an I2C interface of the processor and used for receiving the sound source direction indicating signal sent by the processor and driving the LED lamp to be turned on based on the received sound source direction indicating signal.
6. The audio recording device according to claim 1, further comprising a USB interface, an ethernet interface and an earphone socket interface, wherein the processor is connected to the earphone socket interface, the USB interface and the ethernet interface respectively, and is configured to transmit the audio signal obtained from the first input to at least one of the earphone socket interface, the USB interface and the ethernet interface.
7. The audio recording device of claim 6, wherein the headphone jack interface is connected to an audio codec chip via an I2S bus, and the audio codec chip is connected to an I2S interface of the processor via an I2S bus;
the Ethernet interface is connected with an Ethernet physical transceiver chip, and the Ethernet physical transceiver chip is connected with the RGMII interface of the processor.
8. The audio recording device of claim 6, further comprising a power line interface, and a power management module respectively connected to the USB interface, the Ethernet interface, the power line interface, and the respective power-consuming components of the audio recording device;
the power management module is used for supplying power to each power-using component of the recording device by using the electric signal acquired from the USB interface, the Ethernet interface or the power line interface.
9. The audio recording device according to claim 8, wherein the power management module comprises a BUCK circuit, a POE circuit, a power switching circuit and a power management unit;
the power line interface is connected with the power supply switching circuit through the BUCK circuit, the Ethernet interface is connected with the power supply switching circuit through the POE circuit, the USB interface is connected with the power supply switching circuit, the power supply switching circuit is connected with the power supply management unit, and the power supply management unit is respectively connected with each power utilization component of the recording equipment;
the power supply switching circuit is used for transmitting the electric signal from the USB interface, the Ethernet interface or the power line interface to the power supply management unit;
and the power supply management unit is used for controlling the power supply of each power utilization part of the recording equipment.
10. The audio recording device of claim 1, wherein the processor and the speaker are mounted on a device motherboard, the microphone array is mounted on an array motherboard, and the device motherboard is connected to the array motherboard via an FPC cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022721735.7U CN213988295U (en) | 2020-11-20 | 2020-11-20 | Recording equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022721735.7U CN213988295U (en) | 2020-11-20 | 2020-11-20 | Recording equipment |
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| CN213988295U true CN213988295U (en) | 2021-08-17 |
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| CN202022721735.7U Active CN213988295U (en) | 2020-11-20 | 2020-11-20 | Recording equipment |
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