×

System of encoding and decoding speech signals

  • US 6,604,070 B1
  • Filed: 09/15/2000
  • Issued: 08/05/2003
  • Est. Priority Date: 09/22/1999
  • Status: Expired due to Term
First Claim
Patent Images

1. A speech compression system for processing a speech signal, the speech compression system comprising:

  • an encoding system operable to select a rate for encoding the speech signal as a function of characterization of the speech signal, the encoding system operable to select a type classification, comprising one of a first type and a second type, the encoding system operable to encode the speech signal as a function of the rate and the type classification when a first rate is selected, the encoding system operable to encode the speech signal as a function of the rate, regardless of the type classification, when a second rate is selected; and

    the encoding system operable to encode an adaptive codebook gain and a fixed codebook gain when the first rate is selected and the type classification is the second type, where the adaptive codebook gain is encoded exclusive of the fixed codebook gain.

View all claims
  • 12 Assignments
Timeline View
Assignment View
    ×
    ×