Resources Contact Us Home
Speech compression method and apparatus

Image Number 4 for United States Patent #8352248.

A system for encoding speech includes a speech encoder (106, FIG. 1), a speech recognizer (110), and a difference encoder (108). When the speech recognizer (110) recognizes a word, phoneme or feature within an input speech signal (122), the difference encoder (108) calculates the differences between speech parameters (140, 142) derived by the speech encoder (106) and speech parameters (146, 148) derived by the speech recognizer (110). The difference encoder (108) quantizes the differences (128), which replace corresponding encoder-derived parameters to be transmitted over a channel (130). In one embodiment, the difference encoder representation (128) of the speech parameters consumes fewer bits than the encoder-derived representation (124). Accordingly, the resulting bandwidth consumed by a single channel can be decreased.

  Recently Added Patents
Lithographic apparatus and device manufacturing method
Cleaning device, and image forming apparatus, process cartridge, and intermediate transfer unit each including the cleaning device
Fast carrier allocation in multi-carrier systems
Use of natural query events to improve online advertising campaigns
Biaxially oriented hydrolysis-stable polyester film comprising epoxidized fatty acid derivatives and a chain extender, and process for production thereof and use thereof
Side portion of a circular saw blade
Server providing pseudo print preview and final regular preview to device
  Randomly Featured Patents
Inline power control
Graphical user interface system and method for organized network analysis
Liquid metal gasket in x-ray tubes
Dashboard for a motor vehicle
Seat and back rest for a chair
Rocker box oil separation vent system
Terraced dwellings
Dual-sectioned grounding bushing assembly
Systems and methods for light pruning
Fish strike sensor