In this article I have explained a single chip circuit which can be used for recording and playing back short voice clips or any audio clip ranging from 20 to 60 seconds. About the IC APR9600 The incorporated IC APR9600 is a programmable voice recorder chip which facilitates infinite number of recording/erase of audio files […]
Voice
Modify Human Speech with this Digital Voice Changer Circuit
In this post I have explained a voice modulator circuit which will change or transform an individuals unique voice into a completely new form. The new voice will be different to the original voice tone and unrecognizable. The Circuit Concept The characteristic tone of every individuals voice is specifically unique in all circumstances. How often […]
Robot Voice Generator Circuit
A robot voice generator circuit is a device which modifies a normal human voice into a typical robot like voice, that we normally come across in movies, or video games. The working concept of the circuit is actually simple. The actual human voice signal is subjected to an external frequency modulation signal, such that the […]
ISD1820 Voice Recording IC Datasheet, Circuit Diagram
The ISD1820 is a voice IC that lets us record voice from a mic and play it back using simple buttons or microcontroller. We can record between 8 to 20 seconds which depends on how we set it. This IC is used in small voice projects, talking toys, greeting circuits, voice alerts, and more. ISD1820 […]