Digital audio processor

Electrical audio signal processing systems and devices – Including frequency control

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C381S103000, C381S107000, C381S102000

Reexamination Certificate

active

07460678

ABSTRACT:
The present invention is related to a method for adjusting the frequency characteristic of a digital audio processor having adjustable parameters including at least low frequency gain, high frequency gain and volume gain. The invention is also related to an audio device executing the inventive method every time the characteristic frequency response curve is adjusted. Today's audio devices frequently offer the feature that the user can select among a group of different sound characteristics. Typically the user may want to adapt the sound characteristic of the device to the kind of music he is listening, e.g. rock, jazz, or classic music. In technical terms the sound characteristic is widely determined by the characteristic frequency response curve of the audio signal processing. Those characteristic curves are essentially defined by a gain value in the low, middle and high frequency range. Normally, a 3-band audio processor, which allows adjusting these three parameters independently is used for this purpose. However, 3-band audio processors are relatively more expensive than 2-band audio processors, which allows only adjusting the gain value at the low frequency range and high frequency range. The invention suggests a method how to adjust the volume gain, the low and high frequency gain of a 2-band audio processor to achieve the same features a 3-band audio processor offers.

REFERENCES:
patent: 3557309 (1971-01-01), Graham
patent: 5018205 (1991-05-01), Takagi et al.
patent: 5524022 (1996-06-01), Kihara et al.
patent: 5557237 (1996-09-01), Carpentier
patent: 5872852 (1999-02-01), Dougherty
patent: 7031474 (2006-04-01), Yuen et al.
patent: 6-013826 (1994-01-01), None
patent: 9-232896 (1997-09-01), None
Patent Abstracts of Japan, vol. 018, No. 213, Apr. 15, 1994 & JP 6-013826.
Patent Abstracts of Japan, vol. 1998, No. 1, Jan. 30, 1998 & JP 9-232896.
Search Report dated Apr. 8, 2003.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Digital audio processor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Digital audio processor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital audio processor will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-4042895

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.