CN212572938U - Annular microphone array device based on DSP - Google Patents
Annular microphone array device based on DSP Download PDFInfo
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- CN212572938U CN212572938U CN202021428430.0U CN202021428430U CN212572938U CN 212572938 U CN212572938 U CN 212572938U CN 202021428430 U CN202021428430 U CN 202021428430U CN 212572938 U CN212572938 U CN 212572938U
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Abstract
The utility model discloses an annular microphone array device based on DSP, include: the digital signal processing device comprises an annular microphone array, a pulse code modulation module, a DSP module, a data transmission module and an audio acquisition module, wherein the annular microphone array is used for carrying out audio acquisition and acquiring signals, the pulse code modulation module is used for carrying out analog-to-digital conversion on the signals, the McBSP module is used for generating event signals, the data transmission module is used for caching and filtering data, and the McBSP module is used for transmitting the data to the audio acquisition module. In this way, the utility model discloses annular microphone array device based on DSP guarantees the accuracy of speech data collection through adopting annular microphone array, has fine suppression noise and speech enhancement's ability, has extensive market prospect in annular microphone array device's based on DSP popularization.
Description
Technical Field
The utility model relates to the field of communications, especially, relate to an annular microphone array device based on DSP.
Background
At present, AI intelligent equipment on the market generally has a voice input control function, and most of the existing voice inputs are recognized by a microphone to generate a control instruction. Then data collection for speech is important. Most voice data acquisition of the existing products is a core board for realizing data acquisition based on a single or two microphones, the core board only has unidirectional fixed-point voice acquisition capacity, the character recognition rate is low, the intention of a user cannot be understood, and the use limitation of the products is too large. The existing product is not completely competent in occasions needing to collect voices of multiple persons, such as a multifunctional hall, a conference room, a report hall, a training center, a command center, a stairway classroom and the like.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the main technical problem who solves provides an annular microphone array device based on DSP, through adopting annular microphone array, adopt 24 microphones to constitute an annular array at 360 degrees within ranges, adopt high performance floating point DSP, guarantee the accuracy to voice data collection, the signal that utilizes a plurality of microphones to collect can be with the sound reinforcing or the suppression that a certain direction transmitted, can be with the effectual reinforcing of specific sound signal in the noise environment, have fine suppression noise and the ability of speech enhancement, do not need microphone moment to point to the sound source direction again, can 360 degrees diversified collection voice data, can accurate discernment current owner's intention, make corresponding action, novel in design, intelligent optimization, there is extensive market prospect in annular microphone array device based on DSP's popularization.
In order to solve the above technical problem, the utility model provides an annular microphone array device based on DSP, include: the digital signal processing device comprises a ring-shaped microphone array, a pulse code modulation module, a DSP module, a data transmission module and an audio acquisition module, wherein the ring-shaped microphone array is used for acquiring audio and transmitting signals to the pulse code modulation module, the pulse code modulation module is used for carrying out analog-to-digital conversion on the signals and transmitting the processed data to an McBSP module of the DSP module through an I2S interface, the McBSP module generates event signals after receiving the data and triggers the data transmission module to copy or move the data, the data transmission module is used for caching and filtering the data and then transmitting the data to the McBSP module, and the McBSP module is used for transmitting the data to the audio acquisition module through an I2S port and accessing a loudspeaker to play sound after being amplified by an amplifier.
In a preferred embodiment of the present invention, the DSP module employs a TIC6655DSP chip.
In a preferred embodiment of the present invention, the pulse code modulation module employs a PCM1864A chip.
In a preferred embodiment of the present invention, the audio acquisition module employs an AIC3106 chip.
In a preferred embodiment of the present invention, the annular microphone array comprises 24 microphones.
In a preferred embodiment of the present invention, the 24 microphones are arranged in a circular array.
In a preferred embodiment of the present invention, the pulse code modulation module performs analog-to-digital conversion on the signal, and the sampling bit width is 16 bits, and the sampling frequency is 8k-96 k.
In a preferred embodiment of the present invention, the pulse code modulation module performs analog-to-digital conversion on the signal, and the sampling bit width is 24 bits, and the sampling frequency is 8k-96 k.
The utility model has the advantages that: the utility model discloses annular microphone array device based on DSP is through adopting annular microphone array, adopt 24 microphones to constitute an annular array at 360 degrees within ranges, adopt high performance floating point DSP, guarantee the accuracy of speech data acquisition, the signal that utilizes a plurality of microphones to collect can be with the sound reinforcing or the suppression that a certain direction transmitted, can be with the effectual reinforcing of specific sound signal in the noise environment, have fine suppression noise and speech enhancement's ability, do not need microphone moment directional sound source direction again, can 360 degrees diversified speech data collection, can accurate discernment current owner's intention, make corresponding action, novel in design, intelligent optimization, there is extensive market prospect in annular microphone array device based on DSP's popularization.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:
FIG. 1 is a schematic diagram of a preferred embodiment of a DSP-based annular microphone array apparatus of the present invention;
fig. 2 is a schematic structural diagram of a loop microphone array according to a preferred embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1-2, an embodiment of the present invention includes:
a DSP-based annular microphone array apparatus, comprising: the device comprises an annular microphone array, a pulse code modulation module, a DSP module, a data transmission module and an audio acquisition module.
The annular microphone array is used for carrying out audio acquisition and transmitting signals to the pulse code modulation module, the pulse code modulation module is used for carrying out analog-to-digital conversion on the signals and transmitting the processed data to the McBSP module of the DSP module through an I2S interface, the McBSP module generates event signals after receiving the data and triggers the data transmission module to copy or move the data, the data transmission module caches and filters the data and then transmits the data to the McBSP module, and the McBSP module transmits the data to the audio acquisition module through the I2S port and accesses a loudspeaker to externally emit sound after being amplified by an amplifier.
Preferably, the DSP module adopts a TIC6655DSP chip.
Preferably, the pulse code modulation module adopts a PCM1864A chip.
Preferably, the audio acquisition module employs an AIC3106 chip.
Preferably, the annular microphone array comprises 24 microphones.
Preferably, the 24 microphones are uniformly arranged in a circle.
Preferably, the pulse code modulation module performs analog-to-digital conversion on the signal, and the sampling bit width is 16 bits, and the sampling frequency is 8k to 96 k.
Preferably, the pulse code modulation module performs analog-to-digital conversion on the signal, and the sampling bit width is 24 bits, and the sampling frequency is 8k-96 k.
The utility model discloses annular microphone array device based on DSP's beneficial effect is:
by adopting the annular microphone array, adopt 24 microphones to form an annular array in the range of 360 degrees, adopt high performance floating point DSP, guarantee the accuracy of speech data acquisition, the signal that utilizes a plurality of microphones to collect can strengthen or restrain the sound that a certain direction transmitted, can be with the effectual reinforcing of specific sound signal in the noise environment, have fine suppression noise and the ability of speech enhancement, do not need microphone moment to point to the sound source direction again, can 360 degrees diversified speech data of gathering, can accurate discernment current owner's intention, make corresponding action, novel in design, intelligent optimization.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all of which utilize the equivalent structure or equivalent flow transformation made by the content of the specification of the present invention, or directly or indirectly applied to other related technical fields, all included in the same way in the patent protection scope of the present invention.
Claims (8)
1. A DSP-based annular microphone array apparatus, comprising: the digital signal processing device comprises a ring-shaped microphone array, a pulse code modulation module, a DSP module, a data transmission module and an audio acquisition module, wherein the ring-shaped microphone array is used for acquiring audio and transmitting signals to the pulse code modulation module, the pulse code modulation module is used for carrying out analog-to-digital conversion on the signals and transmitting the processed data to an McBSP module of the DSP module through an I2S interface, the McBSP module generates event signals after receiving the data and triggers the data transmission module to copy or move the data, the data transmission module is used for caching and filtering the data and then transmitting the data to the McBSP module, and the McBSP module is used for transmitting the data to the audio acquisition module through the I2S port and accessing a loudspeaker to externally output sound after the data is amplified by an amplifier.
2. The DSP based annular microphone array apparatus of claim 1, wherein the DSP module employs a TIC6655DSP chip.
3. The DSP based loop microphone array apparatus of claim 1, wherein the pulse code modulation module employs a PCM1864A chip.
4. The DSP-based annular microphone array device of claim 1, wherein the audio acquisition module employs an AIC3106 chip.
5. The DSP based annular microphone array apparatus of claim 1, wherein the annular microphone array comprises 24 microphones.
6. The DSP based annular microphone array apparatus of claim 5, wherein the 24 microphones are arranged in a circular array.
7. The DSP-based annular microphone array device according to claim 1, wherein the pulse code modulation module performs analog-to-digital conversion on the signal with a sampling bit width of 16 bits and a sampling frequency of 8k-96 k.
8. The DSP-based annular microphone array device according to claim 1, wherein the pulse code modulation module performs analog-to-digital conversion on the signal with a sampling bit width of 24 bits and a sampling frequency of 8k-96 k.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021428430.0U CN212572938U (en) | 2020-07-20 | 2020-07-20 | Annular microphone array device based on DSP |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021428430.0U CN212572938U (en) | 2020-07-20 | 2020-07-20 | Annular microphone array device based on DSP |
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| CN212572938U true CN212572938U (en) | 2021-02-19 |
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| CN202021428430.0U Active CN212572938U (en) | 2020-07-20 | 2020-07-20 | Annular microphone array device based on DSP |
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