Electrical audio signal processing systems and devices – With amplifier
Reexamination Certificate
2005-03-25
2009-11-24
Chin, Vivian (Department: 2614)
Electrical audio signal processing systems and devices
With amplifier
C381S074000, C381S309000, C381S310000, C381S017000, C381S018000, C381S001000
Reexamination Certificate
active
07623669
ABSTRACT:
A personal listening device used in connection with the amplification of signals for enhancing the perceived quality and ambiance of sound heard by listener using stereo headphones or small speaker systems utilizes a difference signal that is cross-fed between stereo channels. The invention provides a perception of spatial presence in music sound when used with either stereo headphones or small speaker systems. The circuitry, wiring and packaging provide for multiple output jacks allowing for convenient sharing of the enhanced output signal from a personal listening device with other persons using headphones. The invention provides effects similar to stereo enhancement, surround sound, and psychoacoustic imagery in a small, inexpensive package for enhancing a user's audio experience.
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Chin Vivian
Ersler Donald J.
Upbeat Audio, Inc.
Vaughn Daren
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