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Multichannel audio aggregation device and method based on CPLD

A multi-channel audio and aggregation device technology, applied in transducer circuits, sensors, electrical components, etc., can solve the problems of complex circuit design, high cost, insufficient number of I2S interfaces, etc., to achieve the effect of strong versatility

Pending Publication Date: 2019-02-22
FUJIAN STAR NET WISDOM TECH CO LTD
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method has the following problems: most CPUs only have one I2S interface and can only process two-way audio data, while CPUs with multiple I2S interfaces have fewer models and high cost. When multi-channel audio is processed, the number of I2S interfaces may not be enough
The second method has the following problems: the use of multiple high-precision analog-to-digital converters makes the circuit design complicated and the cost is high

Method used

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  • Multichannel audio aggregation device and method based on CPLD
  • Multichannel audio aggregation device and method based on CPLD

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Embodiment Construction

[0041] Please refer to figure 1 As shown, the present invention realizes the preferred embodiment of multi-channel audio aggregation device 100 based on CPLD, including an audio codec group 2, a bluetooth module 3, a CPU4 and a CPLD1; the audio codec group 2 and the The CPLD1 is connected, the bluetooth module 3 is connected with the CPLD1, and the CPLD1 is connected with the CPU4; the audio codec group 2 includes a plurality of audio codecs for encoding multi-channel audio data And decoding; the CPU4 uses RK3288.

[0042] The CPLD1 includes a first bus interface group 11, a second bus interface 12, a third bus interface 13, a fourth bus interface 14, a register 15 and a filter module 16; the register 15 is used to configure audio The sampling rate and sampling accuracy of data; the filter module 16 is used to filter the audio data so as to obtain high-fidelity audio data; one end of the first bus interface group 11 is connected to the audio codec group 2, The other end is c...

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Abstract

The invention provides a multichannel audio aggregation device based on a CPLD. The multichannel audio aggregation device comprises an audio codec group, a Bluetooth module, a CPU and a CPLD; the audio codec group is connected with the CPLD, the Bluetooth module is connected with the CPLD, and the CPLD is connected with the CPU. The invention further provides a multichannel audio aggregation method based on the CPLD. The multichannel audio aggregation device provided by the invention has the advantages that an audio interface is extended at a low cost, and simultaneous input of multiple channels of audio is realized; the sampling rate and the sampling precision of audio channels can be configured; and filtering processing can be performed on the audio data to obtain high-fidelity audio data.

Description

technical field [0001] The present invention relates to an audio aggregation device and method, in particular to a CPLD-based multi-channel audio aggregation device and method. Background technique [0002] With the advancement of information technology, more and more people use video conferencing to conduct remote discussions and improve work efficiency. Video conferencing refers to a meeting in which people located in two or more locations conduct online conversations through communication devices and networks. The video conferencing system is inseparable from the collection of audio signals. People pay more and more attention to high-quality and low-latency audio experience. Therefore, multiple channels are required to collect audio signals in parallel, which has the characteristics of large data volume and high real-time requirements. [0003] The prior art generally adopts the following two methods, one is to use a CPU plus an audio codec; the other is to use a CPU plu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R3/00
CPCH04R3/00
Inventor 高计丰易江瑜曾清祺陈传前
Owner FUJIAN STAR NET WISDOM TECH CO LTD
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