Electrical audio signal processing systems and devices – Hearing aids – electrical – Specified casing or housing
Patent
1990-01-23
1991-10-15
Callahan, Timothy P.
Electrical audio signal processing systems and devices
Hearing aids, electrical
Specified casing or housing
328167, 381 94, 307521, H03B 100, H03B 104
Patent
active
050577859
ABSTRACT:
A method and circuitry for suppressing additive transient disturbances in an analog differential input signal, such disturbances being due, for example, to thermal asperity transients caused by an MR transducer contacting a moving storage surface. The input data signal is algebraically summed with a corrective feedback signal for providing as output signal. The output signal is fed back to a circuit including an envelope detector and differentiator and converted into another signal that is the derivative of an amplitude envelope corresponding to the output signal. Nonlinear signal-adaptive filter means converts said other signal into the corrective feedback signal, which substantially replicates the additive transient disturbance and is subtracted from the data input signal to render the output signal substantially free of the transient disturbance.
The input, output and corrective signals are preferably differential signals.
REFERENCES:
patent: 3911776 (1975-10-01), Biegel
patent: 4177430 (1979-12-01), Paul
patent: 4577238 (1986-03-01), Watanabe
patent: 4648118 (1987-03-01), Hitotsamachi
patent: 4859883 (1989-08-01), Bradinal
patent: 4914398 (1990-04-01), Jove et al.
Chung Paul W.
Jenkins Michael O.
Jove Stephen A.
Klaassen Klaas B.
Saber Paik
Callahan Timothy P.
International Business Machines - Corporation
Otto, Jr. Henry E.
LandOfFree
Method and circuitry to suppress additive disturbances in data c does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and circuitry to suppress additive disturbances in data c, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and circuitry to suppress additive disturbances in data c will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-993474