I was programming my Motorola Minitor V Pager and was looking at the various two-tone rules configured. ANd while I know my Fire toneout by ear, I couldn’t correlate to the Hz values used by the pager. I google for a simple tone generator and found a few, but they were all single tone. Whipped this up in an hour or so.
Needed to hear the sound of multiple tone-out values to confirm which was Fire, EMS, and All County, but all pager had was the Hz value, and no means to play samples.
Some javascript and use of the tone.js library to collect inputs for the two tones, and play them back in the right cadence. The table allows multiple rows to be added, with optional labels. A table can also be saved by generating a shareable URL to prefill on next visit.
Here’s a link to listen to the 3 toneouts that my local Fire/EMS department uses on our pagers as an example.
Project link: /tones.html