Method for rebuilding circulation calm sound source by wave overlapping method
A wave superposition method and sound source technology, applied in the field of signal reconstruction, can solve problems that cannot be applied, difficult to analyze sound field characteristics, and have not yet been discovered
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[0049] Embodiments of the present invention are described in detail below: the present embodiment is implemented under the premise of the technical solution of the present invention, and detailed implementation methods and processes are provided, but the protection scope of the present invention is not limited to the following embodiments:
[0050] 1. A cyclo-stationary sound source is formed by a loudspeaker, and a microphone is arranged near the loudspeaker to extract the reference signal. The excitation source of the loudspeaker is:
[0051] V=Acos(2πf 1 t)*noise(t),
[0052] Among them: A = 1, f 1 =300, noise is band-pass colored noise.
[0053] 2. First, 20 microphones are arranged into a linear microphone array, and the sound pressure of the holographic measurement point is scanned and collected on the holographic measurement surface in turn, and finally a 20×20 holographic measurement surface array is formed; at the same time, the reference source microphon...
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