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Design and implementation of a robust pitch detector based on a parallel processing technique
Sukkar, R.A.; LoCicero, J.L.; Picone, J.W.;
Selected Areas in Communications, IEEE Journal on
Volume 6,
Issue 2,
Feb. 1988
Page(s):441
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451
Abstract:
The design and implementation of a parallel-processing-based pitch detector is presented. Pitch information is extracted by performing pitch detection on four different waveforms derived from the speech signal. Pitch information from the four pitch-detection processes is then combined to determine a final pitch estimate. The performance of this pitch detector is evaluated on a large database and compared to other well-known pitch detection algorithms. It has been implemented in real time on a TMS32020 fixed-point digital signal processor as part of a 2.4 kb/s vocoder. A performance comparison of the real-time fixed-point implementation and a computer simulation are also given. The results show that the pitch detector performance is maintained in the real-time implementation mainly because the majority of the algorithm computations are integer arithmetic and logic-type operations
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