I'm trying to make a cat purr noise but I'd like to do it more mechanically than using a sound file. It needs to fit into a box you can hold in your hand. I'm thinking of using a slow motor with a fan that flaps against a serrated edge but how can I get it low hertz like a cat? Thanks in advance for any ideas.
I made a tutorial on how to make a cat purr with FL Studio, maybe it can help you
- get a growl synth for the purr that is not heard constantly, chop the sound so the purring effect
- get a white noise and filter it to sound like breathing, automate the volume
- get a sawy base that sounds like a car engine for the constant, lower purr filter it to sound like "voice"