Pulsive noise removing apparatus

Details Pulsive noise removing apparatus Pulsive noise removing apparatus

1981-12-11

1983-12-06

Hickey, R. J.

Electrical audio signal processing systems and devices

Binaural and stereophonic

Broadcast or multiplex stereo

455223, 381 13, H04H 500

Patent

active

044195419

ABSTRACT:
A pulsive noise removing apparatus comprises a subtracting circuit (35) receiving one input thereto a stereo composite signal directly from a delay circuit (31). A stereo switching signal is generated as a function of a stereo pilot signal included in the stereo composite signal and a cancel signal of the same level, the same frequency and the same phase as those of the stereo pilot signal is generated as a function of the stereo switching signal. A gate (67) is interposed between the output of the cancel signal generating circuit (65) and the other input of the subtracting circuit and the gate is interrupted responsive to detection of a pulsive noise included in the composite signal. The pulsive noise is removed due to interruption of the gate and the stereo pilot signal is prevented from appearing at the output of the subtracting circuit irrespective of conduction or interruption of the gate.

REFERENCES:
patent: 4066845 (1978-01-01), Kishi
patent: 4207432 (1980-06-01), Amazawa et al.
patent: 4221928 (1980-09-01), Franssen et al.
patent: 4246441 (1981-01-01), Sugai et al.
patent: 4306112 (1981-12-01), Ueno
European Patent Application Publication No. 0018608; Saol; Nov. 1980.

Affiliated with

Also associated with

Rating

Pulsive noise removing apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2030955