下面介绍几种模拟自然界声音的电子电路,这些模拟声响电路实质上均是音频振荡器。图1电路模拟警铃,用RP来调节音调的高低,当RP为180 kΩ左右时,它能发出轮船的气笛声。图2是模拟蛐蛐的叫声的电路图3电路用来模拟小鸡和老母鸡的叫声。图4模拟鸟鸣的电路,由555时基电路等构成,其中R次定鸣声的高 Here are several ways to simulate the sound of nature’s electronic circuits, these analog sound circuits are essentially audio oscillator. Figure 1 circuit simulation bell, RP to adjust the tone level, when the RP is about 180 kΩ, it can issue a ship’s gas whistle. Figure 2 is a simulation of shy crying circuit Figure 3 circuit used to simulate the chick and the old hen’s call. Figure 4 analog bird song circuit, 555 by the time base circuit, etc., where R times the sound of the song is high