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

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.
Inventors:
 [1];  [2];  [3]
  1. (Berkeley, CA)
  2. (Livermore, CA)
  3. (Danville, CA)
Issue Date:
OSTI Identifier:
875145
Assignee:
The Regents of the University of California (Oakland, CA) LLNL
Patent Number(s):
US 6542857
Contract Number:
W-7405-ENG-48
Research Org:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Country of Publication:
United States
Language:
English
Subject:
method; characterizing; synthesizing; andor; canceling; acoustic; signals; inanimate; sound; sources; disclosed; propagating; wave; electromagnetic; sensors; monitor; excitation; producing; systems; machines; musical; instruments; structures; acoustical; output; monitored; information; transfer; function; generated; synthesized; canceled; methods; enable; accurate; calculation; matched; functions; relating; specific; excitations; outputs; knowledge; effect; replication; source; identification; cancellation; applications; acoustic signal; /703/704/702/

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