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Noise Reduction with Expanded Dynamic Range

Legacy communication systems for noise adverse environments are designed with 12-bit to 16-bit audio codecs. 16-bit audio provides 96dB of dynamic range. Noise reduction requires estimation the noise power spectrum, and the SNR. 16-bit audio

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Acoustic Echo Cancellation with Expanded Dynamic Range

Traditional full-duplex voice communications systems are designed with 12-bit to 16-bit audio codecs. 16-bit audio provides 96dB of dynamic range. This is more than sufficient for telephony grade applications. Acoustic echo cancellation (AEC) requires implementation

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Binaural LCMV Beamforming

In modern hearing assistant devices, it is common practice to implement adaptive beamforming. Microphone array adaptive beamforming applied to hearing aids must improve the intelligibility of a target sound source, while preserving natural spatial cues

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Microphone Array Beamforming Design

When designing a multi-microphone sound capture device for full-duplex communication and/or voice control products, it is important to understand how the microphone array geometry affects beamforming performance. The most common geometry beamforming designs are uniform

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Binaural MVDR Beamforming

In modern hearing assistant devices, it is common practice to implement adaptive beamforming. Microphone array adaptive beamforming allows the wearer of the hearing aids to listen target sound source more clearly by spatially filtering the

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Voice Processing

VOCAL provides a broad range of Voice processing design solutions to support a variety of applications as well as voice communications over radio, mobile, PSTN and IP networks. Our voice designs may be configured from a

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