Adaptive equalizer for variable length sound tubes utilizing...

Details Adaptive equalizer for variable length sound tubes utilizing... Adaptive equalizer for variable length sound tubes utilizing...

2006-03-21

2006-03-21

Pendleton, Brian T. (Department: 2644)

Electrical audio signal processing systems and devices

Monitoring/measuring of audio devices

C381S380000

Reexamination Certificate

active

07016503

ABSTRACT:
A test signal is generated in a device having a sound tube and a microphone. An acoustic wave is generated in the sound tube from the test signal. The acoustic wave is received at the microphone to estimate an acoustic pressure response. The length of the sound tube is estimated by a frequency of at least one peak in the acoustic pressure response.

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patent: 2004/0062412 (2004-04-01), Nassimi

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