Active adaptive noise canceller without training mode

Details Active adaptive noise canceller without training mode Active adaptive noise canceller without training mode

1990-08-16

1992-05-26

Pihulic, Daniel T.

Communications, electrical: acoustic wave systems and devices

Receiver circuitry

367901, 367137, 367 1, 381 71, H04B 1500

Patent

active

051174014

ABSTRACT:
An active adaptive noise canceller that inserts delays in the weight update logic of an adaptive filter employed by the canceller to make the filter stable. It has been found that there is a great deal of flexibility regarding the selection of the delay values. This insensitivity permits designing the delays in advance, and not having to adjust them to different situations as they change, thus no longer requiring a training mode. The canceller dramatically reduces the amount of hardward needed to perform active adaptive noise cancelling, and eliminates the need for the training mode, which in some applications, including automobiles, for example, can be as objectionable as the noise sources that are to be suppressed.

REFERENCES:
patent: 4677676 (1987-06-01), Erikasson
patent: 4677677 (1987-06-01), Eriksson
patent: 4736431 (1988-04-01), Allie et al.

Affiliated with

Also associated with

Rating

Active adaptive noise canceller without training mode does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Active adaptive noise canceller without training mode, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Active adaptive noise canceller without training mode will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-425018