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
Digital processing method and system for determination of optical flow
Substrate and patterning device for use in metrology, metrology method and device manufacturing method
Image-processing method and program, and image-processing apparatus
Hybrid fin field-effect transistor structures and related methods
Display device and method of repairing display device
Methods and systems for flicker correction
Signal conversion control circuit for touch screen and method thereof
  Randomly Featured Patents
Linearized fractional-N synthesizer having a gated offset
Radar for aerial target detection fitted to an aircraft notably for the avoidance of obstacles in flight
DC source system with solar cell, and its operation method
Method and apparatus for cell search for W-CDMA with non-ideal sampling
Method and system for managing time-shifted financial instruments
Handover in wireless communications
Composition for hair treatment agent
Light emitting diode and light emitting diode array having uniform light distribution
Watch case bottom
Computer file backup encryption system and method