Patents by Inventor Ivan Setiawan

Ivan Setiawan 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 bandwidth expansion
    Patent number: 7676043
    Abstract: Bandwidth expansion for audio signals by frequency band translations plus adaptive gains to create higher frequencies; use of a common channel for both stereo channels limits computational complexity. Adaptive cut-off frequency determination by power spectrum curve analysis, and bass expansion by both fundamental frequency illusion and equalization.
    Type: Grant
    Filed: February 28, 2006
    Date of Patent: March 9, 2010
    Assignee: Texas Instruments Incorporated
    Inventors: Ryo Tsutsui, Ivan Setiawan, Yoshihide Iwata