Electrical audio signal processing systems and devices – Monitoring of sound – Amplification control responsive to ambient sound
Reexamination Certificate
2004-06-07
2009-02-03
Chin, Vivian (Department: 2615)
Electrical audio signal processing systems and devices
Monitoring of sound
Amplification control responsive to ambient sound
C381S094300, C381S094700
Reexamination Certificate
active
07486797
ABSTRACT:
An audio correcting apparatus includes a speaker provided on a television apparatus, a microphone provided on a remote controller, an identifying unit which identifies an acoustic characteristic from the speaker to the microphone, and an acoustic characteristic setting unit having the acoustic characteristic. A signal obtained by allowing an audio signal input to the speaker to pass through the acoustic characteristic setting unit, and a signal representing ambient noise are input to an audio-correcting filter and a loudness-compensation-gain calculating unit. Based on both signals, the sound pressure level of sound output from the speaker is corrected so that the sound output from the speaker is clearly heard when reaching the user without being affected by the ambient noise.
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Marumoto Toru
Saito Nozomu
Alpine Electronics Inc.
Brinks Hofer Gilson & Lione
Chin Vivian
Paul Disler
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