Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Speech coding system using variable threshold values for noise reduction










Image Number 2 for United States Patent #4918734.

A speech coding system includes apparatus for generating a variable threshold dependent upon the power of an input speech signal, and a comparator for comparing the power of the input speech signal with the variable threshold value to generate a discriminating signal for discriminating between a period when a speech continues and a period when the speech pauses, to change the coding operation for the input speech signal in accordance with the level of the discriminating signal, thereby forming voiced and unvoiced frames independently of each other.








 
 
  Recently Added Patents
Image forming apparatus and control method therefor
Plasma panel based radiation detector
Prioritizing application data for transmission in a wireless user device
Antitumoral compounds
Method of fabricating a solar cell with a tunnel dielectric layer
Advertisement in operating system
Method and apparatus of communication using soft decision
  Randomly Featured Patents
Vehicle-mounted system
Semiconductor chip and method of manufacturing the same
Shoe sole
Switch for very large DC currents
Transmissive liquid crystal display device
Orally-ingestible nutrition compositions having improved palatability
Main storage and expanded storage reassignment facility
Ceramic duplex filter
Aromatic polycarbonate copolymer, a process for producing the same, and a plastic optical waveguide using the same
Solid-state image sensing device providing a logarithmically proportional output signal