Analog Audio Subsystem with Integrated Noise Reduction

摘要

National Semiconductor Corporation has released the industry's first analog audio subsystem with integrated noise reduction for use in smartphones and full-featured phones. The PowerWise? LM49155 dramatically improves the talker's voice-signal-to-background-noise ratio while retaining natural speech quality. Phone users can now enjoy clearer voice calls in noisy environments on both transmit and receive ends of the communications link. The LM49155 also enables increased accuracy of voice recognition systems by minimizing background noise.