Free Retro Tech Sounds: Dial-Up Modem & More
Nostalgic machine sounds rebuilt from the protocols up — dial tones, DTMF and a full 56k modem handshake, all synthesised in code.
FAQ
- Is the modem sound a recording?
- No. It is synthesised from the real signalling: dial tone, DTMF, answer tone with phase reversals, FSK, line probing and training.
- Can I use it commercially?
- Yes. Sounds are CC0 (public domain).
- Why does it sound like a phone line?
- Everything is band-limited to a 300–3,400 Hz telephone line with line hiss, as the original was.