Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Codec system and method










Image Number 8 for United States Patent #7239253.

A sound codec including a compression portion and a decompression portion. The compression portion separates the incoming sound packet bandwidth into frequency sub-bands using a bank of infinite impulse response (IIR) filters. In accordance with the invention, the lower frequency signals are divided into more sub-bands than the higher frequency signals. Once the signals are divided into sub-bands, each sub-band signal is quantized. The resulting signals of all of the quantized sub-bands are then sent out over a communications link along with the filter state at the end of each sound packet. The decompression portion recombines the individual sub-band signals together (using a bank of infinite impulse response (IIR) filters) to form the audio data using the filter states to configure the reconstruction.








 
 
  Recently Added Patents
Chip on chip semiconductor device including an underfill layer having a resin containing an amine-based curing agent
Synthetic bone grafts
Non-volatile semiconductor memory and data processing method in non-volatile semiconductor memory
System and method for optimizing teams
Solid state lighting devices with cellular arrays and associated methods of manufacturing
Fingerprinting apparatus, system, and method
Selecting input/output components of a mobile terminal
  Randomly Featured Patents
Use of zirconium salts to improve the surface sizing efficiency in paper making
Method and apparatus for test data generation
Reproducing apparatus and reproducing method
Fine pitch low cost flip chip substrate
Leveling rod
Wafer exposure method and apparatus
Method and a circuit arrangement for digital signal processing utilizing adaptive transversal filter techniques
Litter box
Fuel canister dispensing valve
GST sequences from soybean and their use in the production of herbicide resistant plants