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
Pet cremation urn
Integrated projector system
Methods and devices for coding and decoding images, computer program implementing them and information carrier enabling their implementation
Electronic device
Electrode tab for secondary battery and secondary battery using the same
Micro-fluidic device
Assembly for providing an aligned stack of two or more modules and a lithography system or a microscopy system comprising such an assembly
  Randomly Featured Patents
Electrodeless fluorescent lamp shield for reduction of electromagnetic interference and dielectric losses
Radar signal processing chip
Coffee roaster
Panelized, edge-connected, modified-rhombic triacontahedral structures
Means for securing elastomeric sheathing to a roof surface
Electron tubes using insulation material containing little alkali metal
Workpiece supporting apparatus for power tools with high speed cutting members
Drawers and drawer runners
Homogenizing valve
Reagent container for a chemical analyzer