Fostex Research & Development, Inc.

Cameron W Jones

David D Russell

Eric Richardson

Gerald F Halstead

Alexander Kish

Eric Gottesman

Lee A McDavid

Clifford Sielitsky

Troy D Andrews

J Alan Witmer

Lisa J Thompson

Timothy Pinkham

Mickey Matsumoto

Steven Maker

Linda J Donley

Jeffrey B Postupack

Richard Rosenzweig

Jeffrey W Doyle

Jeffrey C Cunningham

William Leathers

Richard Wear

Wu-Cheng Tsai

Robert Merrill

Robert Bristow-Johnson

Paul W Brown

Milton A Colvin

Michael Geilich

Tyler Brown

Dave Oren

Lannelle Jalowiec

Scott C Peer

Peter Phillips

Matt P Bucy

Ivor Taylor

A digital tone generator includes a modulo adder, an increment number register, two latches and a master clock. The adder continuously adds one of a plurality of predefined increment numbers with the adder's previously generated sums to create further sums and a carry output corresponding to one of a plurality of predetermined output tone frequencies. The system characteristics and increment numbers are selected to correspond to the predetermined frequencies and generate exact tonal frequency signals. The system characteristics and increment numbers are defined using a formula which accounts for the least common multiple of the rational number representation of the predetermined frequencies. In the preferred embodiment, the digital tone generator is used to select and generate one of a plurality of time code tones.

Digital tone oscillator for certain exact frequencies and method for

Audio workstation

Growing community of inventors

Hanover, NH, United States of America

Cameron W Jones