BACKGROUND CELP is a very popular technology which is used to encode a speech
signal by using specific human Voice characteristics or a human vocal voice production …

the prediction parameters, and determining possible best indices of the prediction
parameters, where determining includes minimizing a prediction error between a reference …

2004, OO15349 2004/O181397 2004/0225.505 2005/O159941 2005/O165603
2005/0278174 2006.0036432 2006, O147124 2006/0271356 2007/0O88558 …

6,629,283 B1 9/2003 Toyama 6,708,145 B1 3/2004 Liljeryd et al. the second coding error to
produce a coded spectral envelope. The coded fine spectrum coefficients and the coded …

US PATENT DOCUMENTS 5,828,996 A 10/1998 Iijima et al. 5,974,375 A 10/1999 Aoyagi et
al. 6,018,706 A 1/2000 Huang et al. 6,507,814 B1 1/2003 Gao 6,629,283 B1 9/2003 Toyama …

US8639500B2 - Method, medium, and apparatus with bandwidth extension encoding and/or
decoding - Google Patents US8639500B2 - Method, medium, and apparatus with …

US8121831B2 - Method, apparatus, and medium for bandwidth extension encoding and
decoding - Google Patents US8121831B2 - Method, apparatus, and medium for bandwidth …

A method for decoding an audio signal in a decoder having a CELP-based decoder element
including a fixed codebook component, at least one pitch period value, and a first decoder …

CPC................................ G10L 19/12: G 10L 19/24 second enhancement layer after the first
enhancement layer. USPC.................. 704/219, 222, 203,207,205,500 Encoding the second …

The present invention relates to a method and apparatus for pitch search. One method
includes: obtaining a characteristic function value of a residual signal, where the residual …