Resources Contact Us Home
Frequency subband encoding apparatus

Image Number 11 for United States Patent #5588024.

The invention provides a frequency subband encoding apparatus wherein the amount of comparison operation processing of a bit allocator is minimized. A subband filter divides a PCM signal into and outputs a plurality of frequency subbands. A SMR calculator calculates, for each of the frequency subbands, an SMR which is a ratio between a signal level and a mask level. A bit allocator calculates a reference NMR which is a value obtained by subtracting, from an SMR of the entire frequency band, a S/N ratio calculated from a reference bit number to be allocated to one of the frequency subbands which exhibits a maximum SMR, and adjusts the reference NMR to perform bit allocation to the frequency subbands.

  Recently Added Patents
Failsafe directory file system in a dispersed storage network
Method and apparatus for traffic count key management and key count management
Carrier frequency offset (CFO) estimator with low complexity and high accuracy for orthogonal-frequency-division-multiplexing (CO-OFDM) systems
Interactive control of alarm systems by telephone interface using an intermediate gateway
Isocyanates and aromatic hydroxy compounds
Extended varying angle antenna for electromagnetic radiation dissipation device
Water misting fan with flared bottle
  Randomly Featured Patents
Calendar display device and calendar watch
Dental dam support and method of use
Integral lift wing for a disk drive actuator
Pattern-formed substrate, pattern-forming method, and die
Soybean variety XB40U10
Automatic transmission control unit cooling apparatus
Method for the reciprocal positioning of an optical fiber and a semiconductor laser and a positioning apparatus using this method
Process of making a refastenable mechanical fastening system with substrate having protrusions
Post wire guide latching means
Condiment dispensing container and carousel