Pitch delay modification during frame erasures

Details Pitch delay modification during frame erasures Pitch delay modification during frame erasures

1995-06-07

1997-12-16

MacDonald, Allen R.

Excavating

395 228, 395 229, 395 231, 371 31, 341 94, G10L 914, H04B 110

Patent

active

056994850

ABSTRACT:
In a speech decoder which experiences frame erasure, the pitch delay associated with the first of consecutive erased frames is incremented. The incremented value is used as the pitch delay for the second of consecutive erased frames. Pitch delay associated with the first of consecutive erased frames may correspond to the last correctly received pitch delay information from a speech encoder (associated with a non-erased frame), or it may itself be the result of an increment added to a still previous value of pitch delay (associated with a still previous erased frame).

REFERENCES:
patent: 5305332 (1994-04-01), Ozawa
patent: 5550543 (1996-08-01), Chen et al.
Brian Bryden, Gerald E. Seguin, Jean Conan, Vijay K. Bhargava, and Andre Brind'Amour, "Error Correction/Masking for Digital Voice Transmission Over the Land Mobile Satellite System", IEEE Transactions on Communication, vol. 37, No. 3, pp. 309-314, Mar. 1989.

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