Smart rejecter for keyboard click noise

A method for an impulse noise filter to minimize impulse noise in a communication session, comprising:

• receiving an audio input from an audio source;
• determining whether the audio input includes impulse noise;
• determining whether the audio input includes voice;
• and
• generating an audio output by adaptively filtering the audio input based on the determination of impulse noise being included in the audio input and based on the determination of voice being included in the audio input, wherein the adaptive filtering minimizes the impulse noise and maximizes the voice in the audio input,
• wherein generating the audio output by adaptively filtering the audio input based on the determination of impulse noise being included in the audio input and based on the determination of voice being included in the audio input comprises:
• if impulse noise is not included, using a minimum adaptation rate for adaptively filtering the audio input;
• if impulse noise is included and voice is not included, using a maximum adaptation rate for adaptively filtering the audio input;
• and
• if impulse noise is included and voice is included, using an adaptation rate between the minimum and maximum adaptation rates for adaptively filtering the audio input.

An impulse noise filter for minimizing impulse noise in a communication session, comprising:

• an input interface operable to receive an audio input from an audio source;
• an impulse noise determination module operable to determine whether the audio input includes impulse noise;
• a voice activity determination module operable to determine whether the audio input includes voice;
• and
• an adaptive filtering module operable to generate an audio output by adaptively filtering the audio input based on the determination of impulse noise being included in the audio input and based on the determination of voice being included in the audio input, wherein the adaptive filtering minimizes the impulse noise and maximizes the voice in the audio input,
• wherein the impulse noise determination module and the voice activity determination module comprise:
• an impulse noise detector operable to apply an impulse noise detection to the audio input in identifying the impulse noise in the audio input, the impulse noise detection being selected from the group consisting of noisy excitation analysis and power estimation analysis;
• and
• a smart model selector operable to determine an impulse noise match between the identified impulse noise and an impulse noise sample from a database of impulse noise samples,
• wherein the audio input includes impulse noise if there is an impulse noise match, and
• wherein the audio input does not include impulse noise if there is no impulse noise match.

A computer program product for minimizing impulse noise in a communication session, the computer program product being embodied in a non-transitory computer readable medium and comprising computer executable instructions for:

• receiving an audio input from an audio source;
• determining whether the audio input includes impulse noise;
• determining whether the audio input includes voice;
• and
• generating an audio output by adaptively filtering the audio input based on the determination of impulse noise being included in the audio input and based on the determination of voice being included in the audio input, wherein the adaptive filtering minimizes the impulse noise and maximizes the voice in the audio input,
• wherein determining whether the audio input includes impulse noise comprises:
• applying an impulse noise detection to the audio input in identifying the impulse noise in the audio input, the impulse noise detection being selected from the group consisting of noisy excitation analysis and power estimation analysis;
• and
• determining whether the identified impulse noise matches an impulse noise sample from a database of impulse noise samples,
• wherein the audio input includes impulse noise if there is a match, and
• wherein the audio input does not include impulse noise if there is no match.