DESCRIPTION

· The LMV1051-LLP is an ultra-low power signal processor for dual microphone adaptive noise cancelling.

· It processes signals from 2 ECM or MEMS microphones to create an adaptive beamforming noise reduction system.

· It can reduce noise by up to 30 dB, improving the signal-to-noise ratio (SNR) without introducing artifacts into the talker's voice.

· The desired signal remains unmodified, enhancing intelligibility and speech recognition accuracy.

· It is designed to replace a standard ECM using a two-wire or three-wire interface, powered from the mic bias supply.

· The system uses less power than an individual ECM, enabling easy upgrades to current designs without modifying existing circuits.

FEATURES

· Superior noise cancellation with dual mic technology and active directional pattern.

· Up to 30 dB peak noise rejection of stationary and non-stationary noise sources.

· No distortion of the desired signal with flat frequency response.

· Wind noise alert and protection, automatically reducing wind noise by ≈20 dB.

· Ultra-low power consumption at 210 μA (typical) including mic bias.

· Battery-free operation in wired headsets.

· Compatible with standard ECM interfaces (2-wire or 3-wire).

· Complete signal processing solution with no software required.

· Zero-latency signal processing.

· Noise cancelling or omni-directional output.

· Better EMI noise rejection than ECM.

· Supports telephony bandwidth.

· Small size of 3x3 mm.

APPLICATIONS

· Wired headsets.

· Webcams.

· Cellular or cordless handsets.