Patents by Inventor James E. Van Buskirk

James E. Van Buskirk 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).

  • Synthesizer system utilizing mass storage devices for real time, low latency access of musical instrument digital samples
    Patent number: 6008446
    Abstract: A synthesizer system includes a CPU and host memory operating a software routine. The software routine stores a first part of each waveform signal in a sample pool of host memory and provides remaining portions of selected musical sounds from the hard drive to a stream cell array without an audio perceivable delay. The synthesizer system utilizes a caching system which allows low cost, high storage devices to be utilized in an audio synthesizer system. MIDI control signals are provided to an audio processor for selecting appropriate digital waveform signals.
    Type: Grant
    Filed: June 10, 1998
    Date of Patent: December 28, 1999
    Assignee: Conexant Systems, Inc.
    Inventors: James E. Van Buskirk, Joseph A. Bibbo
  • Synthesizer system utilizing mass storage devices for real time, low latency access of musical instrument digital samples
    Patent number: 5811706
    Abstract: A synthesizer system includes a CPU and host memory operating a software routine. The software routine stores a first part of each waveform signal in a sample pool of host memory and provides remaining portions of selected musical sounds from the hard drive to a stream cell array without an audio perceivable delay. The synthesizer system utilizes a caching system which allows low cost, high storage devices to be utilized in an audio synthesizer system. MIDI control signals are provided to an audio processor for selecting appropriate digital waveform signals.
    Type: Grant
    Filed: May 27, 1997
    Date of Patent: September 22, 1998
    Assignee: Rockwell Semiconductor Systems, Inc.
    Inventors: James E. Van Buskirk, Joseph A. Bibbo
  • Apparatus and method for generation and synthesis of audio
    Patent number: 5684260
    Abstract: The method of the present invention preferably receives a predetermined number of input values or data from which it may be determined which one of a predetermined number of modulator waveforms is selected and which one of a predetermined number of carrier waveforms is selected for a desired audio signal, musical sound or tone. A portion of the input values are used to generate predetermined control signals which are used in combination with the selected modulation waveform to interpolate stored modulator harmonic spectral values to determine the modulator waveform's harmonic sideband(s). A second portion of the control values that have been generated are used in combination with the selected carrier waveform to then determine the carrier waveform's spectral values, amplitude and envelope amplitude. Following this the carrier and modulator spectral values are combined in a preselected manner to provide an appropriate composite signal.
    Type: Grant
    Filed: September 9, 1994
    Date of Patent: November 4, 1997
    Assignee: Texas Instruments Incorporated
    Inventor: James E. Van Buskirk