Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Encoding, decoding and compression of audio-type data using reference coefficients located within a band a coefficients










Image Number 7 for United States Patent #5640486.

An audio type signal is encoded. The signal is first divided into bands. For each band, a yardstick signal element is selected. The yardstick may be the signal element having the largest magnitude in the band, the second largest, closest to the median magnitude, or having some other selected magnitude. This magnitude is used for various purposes, including assigning bits to the different bands, and for establishing reconstruction levels within a band. The magnitude of non yardstick signal elements is also quantized. The encoded signal is also decoded. Apparatus for both encoding and decoding are also disclosed. The location of the yardstick element within its band may also be recorded and encoded, and used for efficiently allocating bits to non-yardstick signal elements. Split bands may be established, such that each split band includes a yardstick signal element and each full band includes a major and a minor yardstick signal element.








 
 
  Recently Added Patents
Wideband antenna
Methods and systems for improved engine speed control during engine starting
Formation of a masking layer on a dielectric region to facilitate formation of a capping layer on electrically conductive regions separated by the dielectric region
Horizontal card holder
(-)-epigallocatechin gallate derivatives for inhibiting proteasome
Chemically bonded carbon nanotube-polymer hybrid and nanocomposite thereof
Method for switching between virtualized and non-virtualized system operation
  Randomly Featured Patents
Electronic proximity fuse having multiple Doppler frequency channels
Protection device for a motor spindle
Article for applying styptic to a dog's bleeding nail
Processes for modifying plant flowering behavior
Highchair/feeding chair booster cushion
Spotlight
Adjustable torque wrench having lock device
Current measuring element with a hall sensor
Multi-layered integrated circuit package with improved high frequency performance
Modular mixer system