Skip to content
Better HN
Top
Best
Ask
Show
New
Jobs
Search
⌘K
DTFM Dial Tones
(opens in new tab)
(onlinetonegenerator.com)
2 points
uptakeinhibitor
3y ago
2 comments
Save
Share
2 comments
2 comments · 2 top-level
top
newest
oldest
ggm
3y ago
Dual-tone multi-frequency so DTMF
uptakeinhibitor
OP
3y ago
DTFM Dial Tone generator. Apperantly each tone is just a sum of two sine waves. Cool!
j
/
k
navigate · click thread line to collapse
