Acoustic characteristic correction device

Details Acoustic characteristic correction device Acoustic characteristic correction device

1994-05-05

1996-11-05

Voeltz, Emanuel T.

Boots, shoes, and leggings

36472419, 381101, 381103, 359173, H03G 500

Patent

active

055724434

ABSTRACT:
An acoustic characteristic correction device includes a section for setting a desired characteristic of a response characteristic in a reproduction system including a sound field, a section for outputting information of a measured characteristic of the response characteristic, a section for computing a correction characteristic for realizing the desired characteristic on the basis of the desired characteristic and the measured characteristic, and a section for imparting the computed correction characteristic to a sound signal to be reproduced. The device may further includes a display section for displaying the set desired characteristic, a section for controlling the level or frequency of the computed correction characteristic, a section for imparting a compensation characteristic to the correction characteristic. Results of measurement at plural points for plural measuring times may be stored and an average value of the results of measurement may be used as a measuring signal. In measuring a response characteristic by using a TSP signal, a convolution operator may be used commonly for time compression by an inverse filter characteristic and imparting of a correction characteristic.

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European Search Report dated, Sep. 18, 1995, Appl. No. 94107305.8.
Robert W. Adams, "An Automatic Equalizer/Analyzer", An Audio Engineering Society Preprint, Presented at the 67th Convention 1980 Oct. 31/Nov. 3, New York.
Cecil W. Solomon, et al., "A 12-Band Microprocessor Controlled Graphic Equalizer Display Filter IC", IEEE Transactions on Consumer Electronics 37 (1991) Aug., No. 3, New York.

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