Patents by Inventor James Leonard Fiocca

James Leonard Fiocca has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Bit allocation method for improved audio quality perception using psychoacoustic parameters
    Patent number: 5761636
    Abstract: Audio quality perception can be improved in an audio compression system 100 by defining a frequency subband threshold 205. With the frequency subband threshold 205, each frequency subband favorable to the threshold will be allocated at least a predetermined number of bits while frequency subbands unfavorable to the threshold will receive no bit allocations. This determination is made on an audio frame by audio frame basis, or upon change of the audio compression ratio, since changing any of the parameters: bitrate, sampling rate and coding mode changes the compression ratio.
    Type: Grant
    Filed: February 12, 1997
    Date of Patent: June 2, 1998
    Assignee: Motorola, Inc.
    Inventors: Scott Charles Bolton, James Leonard Fiocca
  • Method and apparatus of reducing processing steps in an audio compression system using psychoacoustic parameters
    Patent number: 5732391
    Abstract: Complexity of an audio compression system is reduced by initially allocating some bits to frequency subbands. The initial bit allocation is based on historical signal-to-mask ratio information for the audio compression system. The remaining bits are allocated to frequency subbands based on psychoacoustic parameters of the audio being encoded.
    Type: Grant
    Filed: September 20, 1996
    Date of Patent: March 24, 1998
    Assignee: Motorola, Inc.
    Inventor: James Leonard Fiocca