System and method for characterizing synthesizing and/or canceling out acoustic signals from inanimate sound sources

Patent · Tue Dec 31 23:00:00 EST 2002

OSTI ID:875145

Holzrichter, John F ^[1]; Burnett, Greg C ^[2]; Ng, Lawrence C ^[3]

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1. Berkeley, CA
2. Livermore, CA
3. Danville, CA

A system and method for characterizing, synthesizing, and/or canceling out acoustic signals from inanimate sound sources is disclosed. Propagating wave electromagnetic sensors monitor excitation sources in sound producing systems, such as machines, musical instruments, and various other structures. Acoustical output from these sound producing systems is also monitored. From such information, a transfer function characterizing the sound producing system is generated. From the transfer function, acoustical output from the sound producing system may be synthesized or canceled. The methods disclosed enable accurate calculation of matched transfer functions relating specific excitations to specific acoustical outputs. Knowledge of such signals and functions can be used to effect various sound replication, sound source identification, and sound cancellation applications.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA
• DOE Contract Number: W-7405-ENG-48
• Assignee: The Regents of the University of California (Oakland, CA)
• Patent Number(s): US 6542857
• OSTI ID: 875145
• Country of Publication: United States
• Language: English

Related Subjects

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