Computerized Multi Microphone Test System

TL;DR

This paper introduces a novel acoustic testing system utilizing a surrounding microphone array to enhance measurement accuracy and analyze spatial and frequency features of sound signals.

Contribution

It proposes a new microphone sensor arrangement around the test product and examines its spatial and frequency domain selectivity features.

Findings

Improved distortion measurement accuracy with the surrounding microphone setup

Effective sound-spatial visualization algorithm demonstrated

Analysis of spatial and frequency selectivity features of the method

Abstract

An acoustic testing approach based on the concept of a microphone sensor surrounding the product under test is proposed. Microphone signals are processed simultaneously by a test system computer, according to the objective of the test. The spatial and frequency domain selectivity features of this method are examined. Sound-spatial visualization algorithm is observed. A test system design based on the concept of a microphone surrounding the tested product has the potential to improve distortion measurement accuracy.