> 9600 baud, but even at that rate, it was way too fast for me to actually comprehend that there was a series of high and low tones representing bits. To be fa

> 9600 baud, but even at that rate, it was way too fast for me to actually comprehend that there was a series of high and low tones representing bits. To be fair, 9600 bps modem already used fairly advanced modulation (QAM+trellis) and not just high and low tones, so it is not really comprehendible to humans the same way simpler modulations are. Even at much slower rates I don't think you could make much sense of QAM signal.