Process and apparatus for improved dummy head stereophonic repro

Details Process and apparatus for improved dummy head stereophonic repro Process and apparatus for improved dummy head stereophonic repro

1981-01-05

1983-06-14

Pellinen, A. D.

179 1GP, H04S 100

Patent

active

043884946

ABSTRACT:
In stereophonic reproduction using a dummy head process, the frequency responses of the microphones are equalized by free-field matching filters to provide overall transfer constants independent of frequency. Signals produced by the above-equalized dummy head apparatus are applied to a decoupling filter which corrects for the directional pattern of the dummy head. The decoupled signals are suitable for loudspeaker reproduction. The decoupled signals can be further applied to a second decoupling network which can be adjusted to produce headphone stereophonic signals matched to a listener's individual directional hearing pattern.

REFERENCES:
patent: 3985960 (1976-10-01), Wallace
patent: 4139728 (1979-02-01), Haramoto et al.
patent: 4192969 (1980-03-01), Iwahara
patent: 4209665 (1980-06-01), Iwahara
patent: 4309570 (1982-01-01), Carver

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