Abstract
In the paper, an autocorrelation-based pitch determination algorithm (PDA) is described. Realtime implementation on TMS32020/C25 digital signal processors is considered. Several optimizations and variations of autocorrelation PDAs have been implemented on a single TMS32020-based system. The algorithms are primarily designed with TMS32020/C25 LPC vocoders in mind and combine high speed, good performance and flexibility.
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