2026 ASIAN Conference on Communication and Networks (ASIANComNet 2026)

Microphone array (MA) beamforming has the advantage of concerning the steerable beampattern at certain sound location while suppressing the surrounding noise, third-party or non-directional noise sources. MA exploits the designed MA geometry, the preferred transfer function, the characteristics of surrounding noise and incorporating with other different single-channel signal processing techniques for obtaining noise reduction and speech enhancement at the same time. In this article, the author proposed using the beamformer’s properties - based post-Filtering for enhancing multi-channel system’s performance under realistic recording environment. The numerical simulation has shown the effectiveness of suggested post-Filtering
in suppressing the background noise level to 10.9 dB and increasing the speech quality in the term of signal-to-noise (SNR) ratio from 7.2 to 9.5 dB. This approach can be implemented into
various types of speech applications for resolving complicated problems, such as, speech recognition, voice-controlled device.

Microphone array, beamforming, speech en- hancement, noise reduction, post-Filtering