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The toughest challenge facing any acoustics engineer is figuring out where the sound originates – especially when there is a good portion of interference and reverb. Since the early nineties, a number of standard and highly functional methods based on microphone arrays have matured. Today, these sound source localization methods are used throughout numerous industries.
The methods fall into three categories: near-field acoustic holography, beamforming and inverse methods. Although these basic techniques have undergone constant improvement, there is not one “magical” single sound source localization technique that prevails over the others. Depending on the test object, the nature of the sound and the environment, the final choice is yours.
Learn more about the theory behind the various sound source localization methods and discover tips to help you determine which of the three methods is the best one for you. A large number of industrial application examples illustrate the practical aspects of using sound source localization to troubleshoot acoustic problems to engineer better products.
Acoustic beamforming is a technique where the microphone array is placed in the far field. Read more about the acoustic beamforming method and its applications.
Acoustic holography is a technique where the microphone array is placed relatively close to the sound source. Read the overview of the acoustic holography method and its applications.
Spherical beamforming is a sound source localization technique that you can apply in complex, reflective sound fields such as vehicle interiors or train and airplane cabin areas.
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