Modulation method for modulating airflow sound source and sensorless closed loop
A modulation method and sensor technology, applied in the direction of sensors, sensor components, electrical components, etc., can solve the problems of high quality requirements of the voice coil vibration system, difficult sensor installation, low sensor reliability, etc., and achieve improvement Pronunciation quality and electro-acoustic conversion efficiency, strong anti-interference, low cost effect
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[0037] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0038] figure 1 It is a schematic diagram of the structure of a typical modulated airflow sound source. figure 2 Schematic diagram of the voice coil modulation principle for modulating the airflow sound source. figure 1 Among them, 11 is the high-speed air intake inlet, 12 is the modulating airflow annular seam, 13 is the elastic element, 14 is the inner coil of the voice coil, 15 is the permanent magnet, 16 is the voice coil, and 17 is the airflow outlet guide cone. figure 2 Among them, 21 is the diversion cone of the airflow outlet, 22 is the high-speed airflow inlet, 23 is the annular seam of the modulated airflow, 24 is the elastic element, 25 is the supporting wall of the elastic element, 26 is the voice coil, and 27 is the coil wound inside the voice coil. The coil, 28, is a permanent magnet, providing a cons...
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