Electrical audio signal processing systems and devices – Sound effects
Reexamination Certificate
2011-08-23
2011-08-23
Lee, Ping (Department: 2614)
Electrical audio signal processing systems and devices
Sound effects
C381S098000, C381S097000
Reexamination Certificate
active
08005233
ABSTRACT:
A method and apparatus for conditioning an audio input signal to enhance perception and reproduction of bass frequencies. Harmonics are generated and combined with a phase-shifted version of the audio input signal. Use of a controlled phase shift reduces or eliminates unwanted introduction of waveform asymmetry or D.C. offset.
REFERENCES:
patent: 4150253 (1979-04-01), Knoppel
patent: 4984273 (1991-01-01), Aylward et al.
patent: 5243658 (1993-09-01), Sakata
patent: 5744992 (1998-04-01), Baumann
patent: 6134330 (2000-10-01), De Poortere et al.
patent: 6285767 (2001-09-01), Klayman
patent: 6792119 (2004-09-01), Aarts
patent: 6865430 (2005-03-01), Runton et al.
patent: 7031474 (2006-04-01), Yuen
patent: 2008/0103763 (2008-05-01), Shimura et al.
DTS, Inc.
Johnson William L.
Lee Ping
Mohindra Gaurav K.
Mrose James E.
LandOfFree
Bass enhancement for audio does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Bass enhancement for audio, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bass enhancement for audio will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2672700