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/ PC Plus SuperCD (UK) 1995 March / PC Plus Super CD (Issue 101) (March 1995).iso / lrn_pc / sound / modem.wav (.mp3) < prev    next >
Waveform Audio File Format  |  1993-09-30  |  151.7 KB  |  1 channel  |  22,050 sample rate  |  7 seconds
Transcription: This is a frequency modulated signal. The high frequency stands for an O and the low frequency stands for a 1.