Noise filtering device

Details Noise filtering device Noise filtering device

H - Electricity

04

B

354/141, 179/5

H04B 1/12 (2006.01)

Patent

CA 1080630

NOISE FILTERING DEVICE ABSTRACT OF THE DISCLOSURE A device for removing undesired correlated signal components, such as noises, hum, tones, echoes and resonances from degraded voice, music or other desired audio signals and records, without requiring a second signal source correlated with the undesirable effects to be removed. In a first embodiment, an optimal linear estimator, such as a Wiener filter, is used to develop a least mean square estimate of the correlated signal components in an input voice signal. A combiner combines the least square estimate with the input voice signal to develop an output voice signal which contains only uncorrelated signal components (in a long-term sense). The output voice signal may be further applied to a spectrum shaper to restore the long term spectrum of the uncorrelated signal components to its desired shape. The invention described herein was made in the course of, or under, a contract or subcontract thereunder with the Law Enforcement Assistance Administration of United States Department of Justice.

283921

Affiliated with

Also associated with

Rating

Noise filtering device does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-981454