A method and system for real-time audio processing of multi-channel digital audio signals

Abstract

The invention provides a multi-channel digital audio signal real-time sound effect processing method and system, comprising: a host computer sends filter parameters, gain parameters and delay parameters to a parallel processor; the parallel processor receives the filter parameters and gain parameters And the audio signal to be processed is sent to the serial processor; the serial processor calculates and obtains the filter coefficient and gain adjustment coefficient according to the received filter parameter and gain parameter and the audio signal to be processed and sends it to the parallel processor; parallel processing The filter performs time domain filtering, gain adjustment and delay processing on the audio signal to be processed according to the received filter coefficients, gain adjustment coefficients and delay parameters. The present invention uses serial architecture processors and parallel architecture processors to jointly process sound effect data, reduces the delay in the sound effect processing process, realizes parallel processing of multi-channel audio data, and makes the sound effect processing have higher real-time performance.

Description

technical field [0001] The invention relates to the technical field of audio processing, in particular to a method and system for real-time audio processing of multi-channel digital audio signals. Background technique [0002] At present, the sound effect processing tasks in various digital sound reinforcement systems are completed by the DSP processing system with serial architecture. Although this type of digital signal processing system has the advantages of high calculation accuracy and flexible and convenient implementation of complex processing algorithms on the chip. However, it will bring a large system delay when performing multi-channel and large-scale audio processing tasks. [0003] In order to ensure the real-time performance of the system, the improvement methods for the processing system are generally to use more expensive multi-core processors to increase the processing capacity of the system, or to increase the number of chips in the system processor, and u...

AI Technical Summary

Problems solved by technology

[0004] Due to the limitations of its data processing methods, the existing digital audio processing system based on serial architecture does not have a great advantage in its processing ability when faced with a large number of highly repetitive processing tasks, and its computing speed cannot meet real-time processing request

However, increasing the number of processors to improve system processing capability and realizing system real-time processing also has certain limitations, and the improvement of processing capability cannot keep up with the requirement of increasing data volume.

Since the system processing unit still adopts a serial architecture, there is still a problem of large delay in the processing system

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