Cuckoo-song Generator

Agreeable, very close sound imitation Suitable for sound effects, door-bells etc. This circuit generates a two-tone effect very much alike the cuckoo song. It can be used for door-bells or other purposes thanks to a built-in audio amplifier and loudspeaker. Used as a sound effect generator it can be connected to external amplifiers, tape recorders etc. In this case, the built-in audio amplifier and loudspeaker may be omitted and the output taken across C8 and ground. More: There are two options: free running, when SW1 is left open, and one-shot, when SW1 is closed. In this case, a two-tone cuckoo song will be generated at each P1 pressing. Circuit operation: IC1 is wired as a square wave generator and produces both tones.

The described circuit functions as a sound effect generator, specifically designed to replicate a two-tone sound similar to that of a cuckoo. It is suitable for various applications, including doorbells and sound effects in electronic devices. The circuit features an integrated audio amplifier and loudspeaker, allowing for direct sound output.

For enhanced versatility, the output can be configured to connect to external audio systems such as amplifiers or tape recorders. In such cases, the built-in audio amplifier and loudspeaker can be bypassed, with the audio output accessed at the junction of capacitor C8 and ground.

Operational modes of the circuit are determined by the state of switch SW1. When SW1 is open, the circuit operates in a free-running mode, continuously generating the two-tone effect. Conversely, closing SW1 activates a one-shot mode, whereby the two-tone cuckoo sound is triggered each time pushbutton P1 is pressed.

The heart of the circuit is integrated circuit IC1, which is configured as a square wave generator. This IC generates the two distinct tones that characterize the cuckoo sound. By adjusting component values associated with IC1, such as resistors and capacitors, the frequency and duration of the output tones can be fine-tuned to achieve the desired sound characteristics.

Overall, this circuit provides a compact and efficient solution for generating sound effects, offering flexibility in both standalone and integrated applications.Agreeable, very close sound imitation Suitable for sound effects, door-bells etc. This circuit generates a two-tone effect very much alike the cuckoo song. It can be used for door-bells or other purposes thanks to a built-in audio amplifier and loudspeaker Used as a sound effect generator it can be connected to external amplifiers, tape recorders etc. In this case, the built-in audio amplifier and loudspeaker may be omitted and the output taken across C8 and ground.

There are two options: free running, when SW1 is left open, and one-shot, when SW1 is closed. In this case a two-tone cuckoo song will be generated at each P1 pressing. Circuit operation: IC1 is wired as a square wave generator and produces both tones 🔗 External reference