Patents Represented by Attorney, Agent or Law Firm Dwight W. Holmbo
  • Reduced multiplier digital IIR filters
    Patent number: 6263354
    Abstract: The application discloses a new digital IIR filter structure which uses at least one fewer multiplier than presently available in current digital IIR filter structures. In particular, by constraining one or both endpoint values (0 and fs/2) to unity, the disclosed approach uses 2 multiply operations instead of 3 for first-order structures and 3 multiply operations instead of 4 or 5 for second-order structures. This multiplier reduction enhances the capacity of the current audio equalizer digital signal processor by 30%.
    Type: Grant
    Filed: January 15, 1999
    Date of Patent: July 17, 2001
    Assignee: Texas Instruments Incorporated
    Inventor: Prashant P. Gandhi