Transform speech signal coding with pitch controlled adaptive quantizing
Real time speech compaction/relay with silence detection Patent #: 4376874
ApplicationNo. 326993 filed on 03/22/1989
US Classes:704/212, Pulse code modulation (PCM)360/8RECORDING FOR CHANGING DURATION, FREQUENCY OR REDUNDANT CONTENT OF AN ANALOG SIGNAL
ExaminersPrimary: Kemeny, Emanuel S.
Attorney, Agent or Firm
International ClassG10L 005/00
AbstractA sound generator for storing and reproducing audio signal with reduced memory storage, which is accomplished by: (a) the technique of Adaptive Differential Pulse Code Modulation (ADPCM), and (B) the elimination of silence period from memory storage but regenerating the silence signal at output.