Microphone Array
Just as humans rely on their ears to hear, machines that want to hear farther and more clearly need more powerful “ears” — this is what a microphone array provides.
A microphone array is a multi-microphone system composed of a certain number of acoustic sensors (microphones) arranged in a specific pattern. Compared with a single microphone, which has limitations in noise source identification, speech extraction, and separation, a microphone array performs spatio-temporal processing on sounds captured from different locations and directions. This enables functions such as noise suppression, reverberation removal, speech interference reduction, sound source localization and direction finding, sound source tracking, and array gain enhancement — ultimately improving speech signal processing quality and speech recognition accuracy in real-world environments.
If speech recognition is viewed as a process of receiving, analyzing, and responding to information, then the microphone array addresses the issues of whether the sound can be heard, what distance is within a reasonable range, and how to reduce environmental interference.
Compared with single-microphone systems, microphone array technology offers many advantages and has become an essential part of speech enhancement and speech signal processing. BQ Electronics Co., Ltd. produces a full range of electret and MEMS microphones with stable performance, providing excellent microphone array solutions for many customers.