System and method for acquiring and playing multichannel audio based on I2S bus

A multi-channel, I2S technology, applied to instruments, electrical digital data processing, etc., can solve the problems of not specifically distinguishing between left and right channels, low sound quality requirements, and unusability
CN110837487AInactive Publication Date: 2020-02-25FUJIAN STAR NET WISDOM TECH CO LTD
4 Cites 4 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
FUJIAN STAR NET WISDOM TECH CO LTD
Publication Date
2020-02-25
Estimated Expiration
Not applicable Β· inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention provides a system for collecting and playing multi-channel audio based on an I2S bus. The system comprises an audio interface chip; a CPU which is connected with the audio interface chipthrough an I2S (Inter-Integrated Circuit) bus; and a plurality of audio encoding and decoding chips, wherein each audio encoding and decoding chip is connected with the audio interface chip. The invention further provides a method for collecting and playing the multichannel audio based on the I2S bus, synthesis and decomposition of the multichannel audio data are achieved, the transmitted audio data are packaged again, and a chip only provided with the I2S bus supports transmission of the multichannel audio data.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the field of audio transmission, in particular to a system and method for collecting and playing multi-channel audio based on an I2S bus. Background technique

[0002] The bus is an internal structure, which is a common channel for CPU, memory, input, and output devices to transmit information. In a communication device, it is often necessary to collect and play multiple channels of audio at the same time.

[0003] In this application scenario, the PCM bus is often used for time-sharing transmission of multiple channels of data. PCM has modes such as long framsync and short frame sync, but it does not specifically distinguish the left and right channels, so it can transmit multiple channels of data in time-sharing; however, in the I2S bus, there is a level specially used to distinguish the left and right channels, so that To synchronize, the low level represents the left channel, and the high level represents the right channe...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More