ScottyB
Experienced
Here is an interesting approach from @Rex.
(I haven't tried building it yet, but just in case anyone else wants to take a stab at it.)
"This is an old-style North American telephone busy signal. It consists of two tones (350 Hz and 440 Hz) mixed together, pulsed at a 1 Hz rate with a 50% duty cycle. You can build this with a Synth block and a Trem/Pan block."
(I haven't tried building it yet, but just in case anyone else wants to take a stab at it.)
"This is an old-style North American telephone busy signal. It consists of two tones (350 Hz and 440 Hz) mixed together, pulsed at a 1 Hz rate with a 50% duty cycle. You can build this with a Synth block and a Trem/Pan block."