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

Patent · Wed Jan 01 00:00:00 EST 2003

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 (United States)
• 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

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/