Electrical audio signal processing systems and devices – Binaural and stereophonic – Pseudo stereophonic
Reexamination Certificate
2005-12-06
2005-12-06
Chin, Vivian (Department: 2644)
Electrical audio signal processing systems and devices
Binaural and stereophonic
Pseudo stereophonic
C381S071100, C181S204000, C415S119000
Reexamination Certificate
active
06973193
ABSTRACT:
An exciting sound wave generator is positioned within a nacelle of a jet engine at its inlet to generate an exciting sound wave having a primary frequency generally different from a frequency of the primary tone of the noise. The exciting sound wave is used to modulate the primary tone of the noise and, therefore, distribute sound energy of the noise from the primary tone to a broad range of side bands so that the amplitude of the primary tone of the noise is reduced.
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LeBlanc Andre
Tse Man-Chun
Chin Vivian
Lao Lun-See
Ogilvy Renault LLP
Pratt & Whitney Canada Corp.
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