When using a device that uses voice, ambient noise may reduce the speech intelligibility and the recognition rate in voice recognition. There is some solution to use multiple microphones to emphasize the desired voice, but from the viewpoint of cost and installation space, there is a strong need to reduce the noise with a single microphone.
TMC has developed and commercialized a software IP that estimates the constant sound as noise and reduce it, improves the voice recognition rate by improving SNR (signal-to-noise ratio), and improves the voice intelligibility in conversation.
|Sampling Frequency||8kHz, 16kHz, 24kHz, 32kHz, 48kHz|
|Input / Output Data Format||16-bit linear PCM (monaural)|
|Strength of Noise Suppression||Adjustable in 9 steps|