Techniques for howling detection
AssigneeCirrus Logic International Semiconductor Ltd.
InventorsPablo PESO PARADA, Rahim SAEIDI, John L. MELANSON
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Abstract
The application describes techniques for howling detection. A howling detector is described that is configured to receive an input signal and to determine measure of the linearity of a logarithmic representation of the energy of the input signal. In some examples, this triggers gain adjustment (e.g. of a noise control unit) and, in some further examples, the amount of the gain adjustment may be based on an estimation of the maximum stable gain of a noise control unit.
Claims21
-20. (canceled)
A howling detector configured to determine whether howling is likely or imminent on the basis of a parameter of a portion of an input signal.
A gain adjuster configured to adjust the gain of a noise control circuit based on a parameter of a portion of an input signal that indicates whether howling is likely or imminent.
A howling detector configured to measure a parameter of a portion of an input signal that indicates whether howling is likely or imminent.
A howling detector configured to determine whether howling is likely or imminent on the basis of the linearity of a parameter of a portion of an input signal.
A gain adjuster configured to adjust the gain of a noise control circuit based on the linearity of a parameter of a portion of an input signal.
Dependencies are inferred from the claim text.