Impulse response collecting method, sound effect adding...

Details Impulse response collecting method, sound effect adding... Impulse response collecting method, sound effect adding...

2007-08-14

2007-08-14

Pendleton, Brian T. (Department: 2615)

Electrical audio signal processing systems and devices

Monitoring of sound

C381S061000, C381S063000

Reexamination Certificate

active

11131791

ABSTRACT:
A TSP signal that is a measurement signal is generated N times by a signal generating portion. The generated TSP signals are supplied to a steel-echo apparatus. Reverberation generated by the steel-plate echo apparatus corresponding to the TSP signals is arranged N times corresponding to the start points of the TSP signals and synchronously added by a synchronously adding portion. Generating impluse signal is convoluted by an inverse function to TSP signal. The added result of the synchronously adding portion is supplied to an impulse response converting portion. By dividing the added result by the inverse characteristics of the TSP signals, the added reverberation is converted into an impulse response. The impulse response data obtained by the converting portion is recorded to for example a CD-ROM and supplied to a reverberator. The reverberator reproduces an impulse response recorded on the CD-ROM and performs a convolution calculation process for the input signal. Thus, reverberation of the steel-plate echo apparatus can be reproduced.

REFERENCES:
patent: 4739513 (1988-04-01), Kunugi et al.
patent: 4888808 (1989-12-01), Ishikawa et al.
patent: 6760451 (2004-07-01), Craven et al.

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