LMV1051 用于双路麦克风自适应消噪，具有风噪声警报的处理器

The LMV1051-LLP is an ultra-low power signal processor that processes the signals from 2 ECM or MEMS microphones to create an adaptive beam forming noise reduction system.

The LMV1051-LLP processor is intended to be integrated with microphones (ECMs or MEMS). By using a proprietary National algorithm, the processor extracts a clean intelligible signal from noisy environments through the use of an adaptive directional pattern. The resulting solution can reduce noise by up to 30 dB, resulting in a significant improvement to the signal-to-noise ratio (SNR). The signal processing does not introduce artifacts into the talker’s voice. The desired signal is unmodified, which improves intelligibility and speech recognition accuracy

	LMV1051
Function	Beamforming
Special Features	Ultra-Low Current,Wind Mode
Mono/Stereo	Mono
Output Type	Single-Ended
FFNRI (dB)	30
Supply Current (mA)	0.21
SNRI (dB)	20
THD (%)	1
Uplink	Yes

LMV1051 特性

Superior Noise Cancellation
Dual Mic Technology
Active Directional Pattern
Up to 30dB peak noise rejection of stationary and non-stationary noise sources
No distortion of desired signal
Flat Frequency Response
Wind Noise Alert and Protection
Automatically reduces wind noise by ≈ 20 dB (vs. directional mic)
Wind Noise Alert can be used to further reduce impact of wind on desired signal
Ultra-Low Power Consumption
210 μA (typical) including mic bias
Battery-free operation in wired headsets
Compatible with Standard ECM Interfaces
2-wire or 3-wire interface
Powered from mic bias supply
Complete Signal Processing Solution
No Software Required
Enables a fully integrated mic module
Zero-Latency Signal Processing
Noise Cancelling or Omni-Directional Output

LMV1051 器件用途

Wired Headset
Webcams
Cellular or Cordless Handsets