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
Imaging apparatus, control method thereof, and program
Method and structure for adding mass with stress isolation to MEMS structures
Linear transformer power supply
Catalysts and process for producing aldehydes
Qualification screening system and screening method thereof, qualification screening device and device under qualification screening
Beverage container lid
Vehicle and communication monitoring
  Randomly Featured Patents
Water-soluble azo compound or salt thereof, ink composition and colored product
Apparatus for manufacturing operations using non-contact position sensing
Electrostatic dry dusting applicator
Virtual optical input device for providing various types of interfaces and method of controlling the same
Sliding coating for winter sports equipment
Manufacturing process of connecting rod assembly and compacting die
Center lock device for automobile wheels
Extraction process for producing PLGA microspheres
Cast composite material
Medical devices containing crazed polymeric release regions for drug delivery