Patent ID: 8359197
Filing Date: 2013-01-22
Classification: G10L

Abstract:
1. A method of encoding a sequence of digital speech samples into a bit stream, the method comprising: dividing the digital speech samples into one or more frames; computing model parameters for a frame; quantizing the model parameters to produce pitch bits conveying pitch information, voicing bits conveying voicing information, and gain bits conveying signal level information, wherein the pitch bits, the voicing bits and the gain bits are included in quantizer bits for the frame; combining one or more of the pitch bits with one or more of the voicing bits and one or more of the gain bits to create a first parameter codeword that includes less than all of the quantizer bits for the frame; encoding the first parameter codeword with an error control code to produce a first FEC (“forward error control”) codeword; and including the first FEC codeword in a bit stream for the frame.