Method for detection and correction of errors in speech pitch pe

Details Method for detection and correction of errors in speech pitch pe Method for detection and correction of errors in speech pitch pe

1987-07-09

1989-02-28

Kemeny, Emanuel S.

Electrical audio signal processing systems and devices

One-way audio signal program distribution

Public address system

381 47, G10L 500

Patent

active

048093343

ABSTRACT:
A method of detecting and correcting received values of a pitch period estimate of a speech signal for use in a speech coder or the like. An average is calculated of the nonzero values of received pitch period estimate since the previous reset. If a current pitch period estimate is within a range of 0.75 to 1.25 times the average, it is assumed correct, while if not, a correction process is carried out. If correction is required successively for more than a preset number of times, which will most likely occur when the speaker changes, the average is discarded and a new average calculated.

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patent: 4653098 (1987-03-01), Nakata

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