Single-chip based multi-channel multi-voice codec scheduling method

Abstract

The invention relates to a dispatching method of multichannel and multisound codec based on the single chip. Every channel is accessed on every time slice, contains: the time of time slice is determined according to the greatest common divisor of long of processing frames of the sound codec; calculates the synchronized cycle period of the sound codec relative to the cycle count period of said time slice P; the channels of sound codec are distributed equally and called according to the time slot of cycle count period P of every sound codec. The method equally distributes the corresponding channels in the cycle count period P, the corresponding channels are distributed to the time slice equally, and realize the VoIP sound processing system channel density, any sound codec combination can berealized, and it's no need to monitor the operation load of DSP chip timely and solve the operation capability bottleneck brought by the deployment of the traditional sound codec and the complex extent.

Description

technical field [0001] The invention relates to voice signal processing, in particular to a single-chip-based scheduling method for multi-channel multi-voice codecs. Background technique [0002] Voice communication based on Internet Protocol Vocie over IP, referred to as VoIP, is a packetized and digital voice transmission technology based on Internet Protocol IP technology. The digital signal processing chip DSP has the characteristics of high processing capacity, independent storage control and low cost, and is suitable for performing the voice signal processing function in the VOIP voice processing system. Its application has greatly promoted the development and promotion of VoIP technology. [0003] The voice codec is built into the DSP chip as a core of VoIP technology, and the codec quality, occupied bandwidth, and processing power are directly related to the realization of VoIP performance. A series of voice compression coding and decoding standards for VoIP release...

AI Technical Summary

Problems solved by technology

The VoIP voice processing system realizes real-time voice processing through the preemption and release of different tasks, but at the same time, multi-task voice signal processing can solve the voice bottleneck or voice frame loss caused by multi-channel polling, but the opening and closing of channels requires Create and cancel tasks in real time. Frequent opening and canceling of tasks and frequent switching of multiple tasks will lead to an increase in the computing load of the DSP chip. At the same time, the DSP platform requires real-time operating system RTOS support

With the increase of channel density, the complexity of VOIP voice processing system also increases, which also brings the bottleneck of computing load, especially when emphasizing that when a high channel density VOIP voice processing system is realized on a DSP chip, it is not possible to establish tasks with each channel. significance

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