Telephone instrument and method for altering audible characteris

Details Telephone instrument and method for altering audible characteris Telephone instrument and method for altering audible characteris

1994-03-31

1996-01-16

Hofsass, Jeffery

Telephonic communications

Substation or terminal circuitry

Conversion of signal form

379430, 379 61, 381 63, 381183, H04M 1100

Patent

active

054855144

ABSTRACT:
A telephone instrument creates spatially simulated sound signals from signals received from a telephone line. The received signals are directed to left and right channels. In each channel, the signals are processed via a direct path, an early reflection path including a finite impulse response filter and a reverberant decay path including all-pass filter. In each channel, the outputs from the three paths are summed with different weights.

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patent: 5086464 (1992-02-01), Groppe
patent: 5113428 (1992-05-01), Fitzgerald
patent: 5146507 (1992-09-01), Satoh et al.
patent: 5381486 (1995-01-01), Ludeke et al.
Schroeder, M. R., Natural Sounding Artificial Reverberation, Journal of the Audio Engineering Society, Jul. 1962, vol. 10, No. 3, pp. 219-223.

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