Electrical audio signal processing systems and devices – Binaural and stereophonic – Pseudo stereophonic
Reexamination Certificate
2011-04-19
2011-04-19
Chin, Vivian (Department: 2614)
Electrical audio signal processing systems and devices
Binaural and stereophonic
Pseudo stereophonic
C381S001000, C381S018000, C381S307000, C381S309000, C381S310000
Reexamination Certificate
active
07929709
ABSTRACT:
A sound image localization apparatus comprises an L direct output section that produces an output signal by inputting an audio signal of a rear left audio input channel to a filter having a characteristic obtained by dividing RLD by LD, an L cross output section that produces an output signal by inputting the audio signal of the rear left audio input channel to a filter having a characteristic obtained by dividing RLC by LC, an R cross output section that produces an output signal by inputting an audio signal of a rear right audio input channel to a filter having a characteristic obtained by dividing RRC by RC, an R direct output section that produces an output signal by inputting the audio signal of the rear right audio input channel to a filter having a characteristic obtained by dividing RRD by RD, a first adding section that adds a difference signal between the output signal of the L direct output section and the output signal of the R cross output section to an audio signal of a front left audio input channel, and a second adding section that adds a difference signal between the output signal of the R direct output section and the output signal of the L cross output section to an audio signal of a front right audio input channel.
REFERENCES:
patent: 6683959 (2004-01-01), Kuwano et al.
patent: 2007/0258607 (2007-11-01), Purnhagen et al.
patent: 2001-86599 (2001-03-01), None
Chin Vivian
Crowell & Moring LLP
Kim Paul
Yamaha Corporation
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