An Efficient Asynchronous Sampling-Rate Conversion Algorithm for Multi-Channel Audio Applications

We describe an asynchronous sampling-rate conversion (SRC) algorithm that is specifically tailored to multichannel audio applications. The algorithm is capable of converting between arbitrary asynchronous sampling-rates around a fixed operating point, and is designed to operate in multi-threaded systems. The algorithm uses a set of fractional delay filters together with cubic interpolation to achieve accurate and efficient sampling-rate conversion.

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