Dual-microphone Speech Recognition Beats The Seven-microphone System

Dual-microphone Speech Recognition Beats The Seven-microphone System

In terms of speech recognition, two microphones are better than one, and sound waves

reaching multiple microphones can exhibit varying degrees of time delay, which can be used to

enhance the intensity of signals from a particular direction while reducing signals from other

directions.

 

Researchers at the Amazon Alexa division have developed a novel acoustic modeling

framework that enhances performance through unified speech enhancement and speech

recognition. They used a dual-microphone system in their experiments, compared to systems

that used seven microphones. They said the new system reduced the error rate of speech

recognition by 9.5%.

 

 

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