Plantronics, Inc.

Renesas Design Netherlands B.v.

Gavin Radolan

Iain McNeill

Matthew Nunes Neves

Chih Chuan Chou

Yuan Chia Lu

Ching-Hua Yeh

An audio signal detector comprising: an input adapted to receive a transducer signal; an output to provide an output signal indicative of the presence of a voice component in the transducer signal; and a processor circuit adapted to estimate a noise characteristic of the transducer signal; detect a voice component of the transducer signal; adjust one or more adjustable voice-activity parameters for detecting the voice component, wherein the said one or more adjustable voice-activity parameters are adjusted based on the noise characteristic; and generate the output signal.

Audio signal detector

An audio device for improved talker discrimination is provided. To improve suppression of close talker interference, i.e., of a person talking in close proximity to the user of the audio device, the audio device comprises at least an audio input to receive a voice input signal; a filter bank, configured to provide a plurality of sub-band signals from the voice input signal; a multi-band audio expander, arranged to receive at least a group of the sub-band signals and configured to conduct audio expansion on the group of sub-band signals to provide gain-controlled sub-band signals; and an audio output, configured to provide a voice output signal from at least the gain-controlled sub-band signals.

Audio device and method of audio processing with improved talker discrimination

An audio device for improved talker discrimination is provided. To improve suppression of close talker interference, the audio device comprises at least a first and a second audio input to receive a first and second voice input signal; a first filter bank, configured to provide a plurality of first sub-band signals; a second filter bank, configured to provide a plurality of second sub-band signals; a correlator, configured to determine at least one signal correlation between at least a group of the first sub-band signals and at least a group of the second sub-band signals; and an attenuator, arranged to receive at least the group of the first sub-band signals and configured to conduct signal attenuation on the group of the first sub-band signals to provide gain-controlled sub-band signals, wherein the signal attenuation is based on the determined at least one signal correlation.

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Merritt Island, FL, United States of America

Gavin Radolan