Patents by Inventor John Michael Dahl

John Michael Dahl 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).

  • Audio coding system and method
    Publication number: 20030233228
    Abstract: A system and method for audio coding an audio signal are provided. In one embodiment of the invention, selected masked tones that are reduced in audibility by masking tones are discarded, and those masked tones that are reduced in audibility by a masking tone that when reproduced along with the masking tone result in a perceived difference tone are retained.
    Type: Application
    Filed: June 3, 2002
    Publication date: December 18, 2003
    Inventor: John Michael Dahl