US Patent 7596228 Parametric array modulation and processing method
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Patent abstract
A system using the nonlinearity of a propagation medium to demodulate an ultrasonic wave having audio modulated onto the ultrasonic frequency, audio signal processing circuitry providing a delayed audio signal and an envelope signal which is a function of peaks of the audio signal over a predetermined interval. The delayed audio signal and the envelope signals are combined with the delay in the audio allowing the envelope signal to accurately be aligned with the audio signal in the combination.
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US Patent 07596228 Parametric array modulation and processing method US Patent 7596228 Parametric array modulation and processing method
Infobox
Patent Number
0759622800
Patent Number
759622800
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Patent Jurisdiction
Patent Number
075962280
Date of Patent
September 29, 2009
0Patent Application Number
105255390
Date Filed
August 26, 2003
0Official Website
Patent Primary Examiner
Edits on 25 Sep, 2022
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Infobox
Is a
Patent Jurisdiction
Patent Number
075962280
Date of Patent
September 29, 2009
0Patent Application Number
105255390
Date Filed
August 26, 2003
0Official Website
Patent Primary Examiner
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US Patent 07596228 Parametric array modulation and processing method
Infobox
Is a
Patent jurisdiction
Patent number
07596228
Date of patent
September 29, 2009
Patent application number
10525539
Date Filed
August 26, 2003
Patent primary examiner
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