Pitch synchronous 1st-order linear d.p.c.m. system |
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| Authors: | Xydeas CS Steele R |
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| Affiliation: | Loughborough University of Technology, Department of Electronic & Electrical Engineering, Loughborough, UK; |
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| Abstract: | A system called p.s.f.o.l.d. is described which exploits the correlation between successive pitch periods of a speech signal. This system is a differential one and can employ various types of encoders. We describe a p.s.f.o.l.d. system using a 1st-order d.p.c.m. encoder and show that for a speech utterance this system has a peak signal/noise ratio which is 6 dB larger, and has an increase in dynamic range of 13 dB, compared with a 1st-order d.p.c.m. codec. |
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