Sound Localization Based on Acoustic Source Using Multiple Microphone Array in an Indoor Environment

Sound signals have been widely applied in various fields. One of the popular applications is sound localization, where the location and direction of a sound source are determined by analyzing the sound signal. In this study, two microphone linear arrays were used to locate the sound source in an ind...

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Bibliographic Details
Published in:Electronics (Basel) 2022-03, Vol.11 (6), p.890
Main Authors: Chung, Ming-An, Chou, Hung-Chi, Lin, Chia-Wei
Format: Article
Language:English
Subjects:
Accuracy
Acoustics
Algorithms
Arrays
Costs
Cross correlation
Digital signal processors
Global positioning systems
GPS
Indoor environments
Linear arrays
Localization
Methods
Microphones
Noise
Position errors
Propagation
Receivers & amplifiers
Sensors
Signal processing
Sound
Sound localization
Sound sources
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Summary:Sound signals have been widely applied in various fields. One of the popular applications is sound localization, where the location and direction of a sound source are determined by analyzing the sound signal. In this study, two microphone linear arrays were used to locate the sound source in an indoor environment. The TDOA is also designed to deal with the problem of delay in the reception of sound signals from two microphone arrays by using the generalized cross-correlation algorithm to calculate the TDOA. The proposed microphone array system with the algorithm can successfully estimate the sound source’s location. The test was performed in a standardized chamber. This experiment used two microphone arrays, each with two microphones. The experimental results prove that the proposed method can detect the sound source and obtain good performance with a position error of about 2.0~2.3 cm and angle error of about 0.74 degrees. Therefore, the experimental results demonstrate the feasibility of the system.
ISSN:2079-9292
2079-9292
DOI:10.3390/electronics11060890