Patents Assigned to Zenph Studios, Inc.
  • Methods, systems and computer program products for detecting musical notes in an audio signal
    Patent number: 7598447
    Abstract: Methods, system and/or computer program products for detection of a note include receiving an audio signal and generating a plurality of frequency domain representations of the audio signal over time. A time domain representation is generated from the plurality of frequency domain representations. A plurality of edges are detected in the time domain representation and the note is detected by selecting one of the plurality of edges as corresponding to the note based on characteristics of the time domain representation.
    Type: Grant
    Filed: October 29, 2004
    Date of Patent: October 6, 2009
    Assignee: Zenph Studios, Inc.
    Inventors: John Q. Walker, II, Peter J. Schwaller, Andrew H. Gross