Electrical audio signal processing systems and devices – Including frequency control – Having automatic equalizer circuit
Patent
1985-05-31
1988-04-19
Isen, Forester W.
Electrical audio signal processing systems and devices
Including frequency control
Having automatic equalizer circuit
381 96, 381 26, H03G 500, H04R 5027
Patent
active
047395133
ABSTRACT:
The acoustic transmission characteristics of a sound field, such as in the passenger compartment of a vehicle, are measured by placing microphones at the positions of ears of a dummy mannequin having a sound absorbing characteristic similar to that of a clothed adult human. The transmission characteristics are then corrected, such as with an automatic graphic equalizer, to provide optimized listening conditions inside the sound field for an actual listener. The use of the invention results in a listener's perception of completely natural sound.
REFERENCES:
patent: 4060696 (1977-11-01), Iwahara et al.
patent: 4340780 (1982-07-01), Odlen
patent: 4388494 (1983-06-01), Schome et al.
patent: 4421949 (1983-12-01), Eberbach
patent: 4458362 (1984-07-01), Berkovitz et al.
Kato Masayuki
Kunugi Yoshiro
Sato Takeshi
Suzuki Shin'ichi
Tokumo Akio
Isen Forester W.
Pioneer Electronic Corporation
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