REAL-TIME AUDIO MIXING OF DIFFERENTLY CODED DATA STREAMS IMPLEMENTED BY A DATA PROCESSOR TECHNIQUES

摘要

A method of mixing a plurality of input data streams together in real time is described. The method comprises: fetching a sample from one of the plurality of input data streams; determining, for a first sample of each different input data stream, a conversion code for placing the first sample into a common format; converting a current sample into the common format using the conversion code specific to the type of input data stream of that current sample; adding the converted sample to a cumulative output sample; and repeating the fetching, converting and adding steps for a plurality of samples of the plurality of input data streams to form a plurality of cumulative output samples representing an output stream of mixed data samples; wherein the repeating step comprises using the determined conversion code for converting each of the samples in the corresponding input data stream subsequent to the first sample.