Reverberator having tapped and recirculating delay lines

Details Reverberator having tapped and recirculating delay lines Reverberator having tapped and recirculating delay lines

1983-12-27

1986-04-22

Isen, Forester W.

Electrical audio signal processing systems and devices

Sound effects

Reverberators

84DIG26, 84DIG4, H03G 300

Patent

active

045847010

ABSTRACT:
A reverberator comprises a tapped delay line (2, 3, 4, 5, 10) connected to an analog audio signal source (1) for deriving therefrom at least one pair of output signals which are respectively delayed by first and second different values with respect to the source signal, the ratio of the first to second values being an irrational number. A recirculating delay line (6, 7, 11, 12) is connected to the output of the tapped delay line having a delay element (63, 73, 113, 123) for introducing an additional delay to the output signals of the tapped delay line and a resistive recirculating path (65, 75, 115, 125) for recirculating the additionally delayed signals through the delay element. The output of the recirculating delay line is combined with the source signal to derive a reverberating audio signal.

REFERENCES:
patent: 3806806 (1974-04-01), Brolin
patent: 3878465 (1975-04-01), Stephenne et al.
patent: 4184047 (1980-01-01), Langford
patent: 4215242 (1980-07-01), Gross
patent: 4472993 (1984-09-01), Futamase et al.
Electrical Design News, vol. 22, No. 1, Jan. 1977, pp. 55-61, Denver, US; R. R. Buss: "CCD's Improve Audio System Performance and Generate Effects", p. 59, left-hand column, line 5-right-hand column, line 57; FIG. 6.

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