Audio Signal Experiment Workshop

Basic digital audio encoding systems

Current mode: Spectrum Text

• AFSK
• ASCII TO DTMF
• DTMF
• EXPERIMENTAL MODE
• MF
• MORSE
• SPECTRUM TEXT

String to encode: [required]

The duration of each character (in milliseconds): [required]

Center tone frequency (in Hz): [required]

Spacing between tones (in Hz): [required]

Audio Sample Rate: 8000 11025 16000 22050 24000 32000 33075 40000 44100 48000

Volume: 0 10 20 30 40 50 60 70 80 90 100

This format "paints" text in an audio signal in such a fashion that viewing the audio in an FFT (spectrogram) will display the text.

After submitting the form, the resulting file will download to your computer.