Gelsonlab HSTM-040 DIY Science Kit Recorder experiment
The circuit of recorder experiment adopts 20-30 second single voice recording and playing integrated circuit. The basic circuits include oscillator, microphone preamplifier, automatic gain control, filter circuit, speaker drive circuit, etc. It has high quality and natural speech restoration technology.
Press and hold the recording key to trigger the high level, and the sound will beep from the horn to enter the recording state. The recording time is about 30 seconds. Touch the play key to play the last recording. Through the experiment, we can understand the principle and application of basic circuits such as recording, storage and restoration of sound.