Method for acoustic transducer calibration

Details Method for acoustic transducer calibration Method for acoustic transducer calibration

2001-04-05

2009-02-17

Ensey, Brian (Department: 2614)

Electrical audio signal processing systems and devices

Monitoring/measuring of audio devices

C381S059000

Reexamination Certificate

active

07492909

ABSTRACT:
A method of acoustic transducer calibration (200, 400) using a band limited pseudo random noise source with an internal digital signal processor (209, 403) to tailor audio characteristics of an internal microphone103and internal speaker (301) within a communications device (101) to insure consistent amplitude and frequency characteristics of these microphone and speaker transducer devices. The method offers and advantage such that tuning of the amplitude and frequency response consistently converges to the desired filter response with a filter type offering operational stability.

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patent: 4631749 (1986-12-01), Rapaich
patent: 5339362 (1994-08-01), Harris
patent: 5481615 (1996-01-01), Eatwell et al.
patent: 5771297 (1998-06-01), Richardson
patent: 5881103 (1999-03-01), Wong et al.

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