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

1995-05-11

1998-06-02

Zele, Krista M.

Telephonic communications

Substation or terminal circuitry

Conversion of signal form

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

Patent

active

057612951

ABSTRACT:
A telephone instrument creates spatially simulated sound signals from signals received from a telephone line. The monaural signals are separated to two 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.

REFERENCES:
patent: 4338581 (1982-07-01), Morgan
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.

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