Dynamic parameter calibration method and calibration device for whistling snapshot system
A calibration method and system dynamic technology, applied in the direction of measuring devices, traffic control systems, radio wave measurement systems, etc., can solve the problems of using units, inability to fully evaluate the performance of whistle sound capture, etc., and achieve a breakthrough in the use of static standards The effect of precise and efficient metering
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[0026] The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.
[0027] figure 1 Calibration block diagram for whistle capture system. The measurement and calibration device includes a multi-channel signal excitation system 1, a standard sound source system 2, a signal acquisition and analysis system 3, a time measurement system 4 and a host computer system 5. Among them, the multi-channel signal excitation system 1 is composed of a signal generator 11 and a multi-channel power amplifier 12; the standard sound source system 2 is composed of a standard sound source array element 21 and a linear slide rail 22; the signal acquisition and analysis system 3 is composed of a reference microphone 31 and The sound analyzer 32 constitutes.
[0028] Such as figure 2 As shown, the standard sound source system 2 in this embodiment includes N standard sound source array elements 21 distribut...
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