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Sound Generator Circuit Diagram | Circuitspedia.com

DIY - DTMF Tone Generator and Decoder Circuits

DIY - DTMF Tone Generator and Decoder Circuits

DTMF Generator / Decoder

DTMF Decoder
![DTMF Decoder - MT8870 [1218] : Sunrom Electronics/Technologies](https://i2.wp.com/www.sunrom.com/media/content/229/dtmf-decoder.gif)
DTMF Decoder - MT8870 [1218] : Sunrom Electronics/Technologies
Ham radio blog by OZ1BXM: Designing and Building a Two-Tone Generator