Resources Contact Us Home
Speech compression method and apparatus

Image Number 6 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
Error recovery storage along a memory string
Solid-state imaging device and electronic apparatus with antireflection structure
Anti-GITR antibodies
Structural plasticity in spiking neural networks with symmetric dual of an electronic neuron
Solid-state imaging device and method for manufacturing the same
Materials and methods for synthesis of a flavor and aroma volatile in plants
Vehicle running control system
  Randomly Featured Patents
Air cleaner
Apparatus and method for adjusting a locking mechanism of a shunt valve
Dispenser with lockout device
Method of fastening an implant to a bone and an implant therefor
Hydraulically actuated starting clutch assembly
Device for the automatic regulation of the tension of a crenellated timing belt
Asset portfolio tracking
System for recording structured read only data table revisions and forming a directory to the latest revisions of table elements
Process and apparatus for producing composite structures
Pressurizing fuel ram air charger