Rain noise simulator. Encyclopedia of radio electronics and electrical engineering
Encyclopedia of radio electronics and electrical engineering / Calls and audio simulators
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The noise generator is made on a transistor V2 and a zener diode V1. The pulse generator, made on transistors V5 and V6, generates pulses with a frequency of 1 ... 3 Hz, which enter the base of the transistor V4 and change the gain of the transistor V3, as a result of which the output appears either rising or falling noise, the level of which is adjustable variable resistor R3, and the timbre - by selecting capacitor C2.
(click to enlarge)
The circuit uses transistors V3-V6 type KT315, V2 types KT602A-KT602G, KT603A-KT603D. The zener diode is selected according to the highest noise level at the output of the simulator.
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