Apparatus for determining tonal characteristics of an object and

Details Apparatus for determining tonal characteristics of an object and Apparatus for determining tonal characteristics of an object and

1993-01-15

1995-02-14

Isen, Forester W.

Electrical audio signal processing systems and devices

Monitoring of sound

84454, 351 58, H04R 2900

Patent

active

053902483

ABSTRACT:
An apparatus is provided for evaluating the tonal characteristics of an object with respect to a nominal tone which comprises a striker for causing the object to generate an audio signal and a microphone for inputting the audio signal. A reference signal generator generates plural reference signals in accordance with the nominal tone, and those signals are mixed with the audio signal by a mixing circuit. The accuracy of the audio signal with respect to the nominal tone is evaluated in accordance with the audio signal mixed by the mixing circuit.

REFERENCES:
patent: 4120229 (1978-10-01), Ota
patent: 4122751 (1978-10-01), Calvin
patent: 4312044 (1982-01-01), Baba
patent: 5070754 (1991-12-01), Adamson

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