On 04/03/10 11:27, fons@xxxxxxxxxxxxxxx wrote: > On Thu, Mar 04, 2010 at 10:27:43AM +0000, Jonathan Gazeley wrote: > > >> Yes - I have a cycle computer that can measure cadence. However, I >> typically pedal between 60 and 90 rpm which means my reading would only >> be available for sampling every 0.7 - 1.0s. It would work, but in the >> space of one second my cadence can vary a lot if I'm accelerating so the >> sound of the rising revs would be jumpy. >> Also, if I suddenly stopped pedalling, it might take up to a second for >> the sampler to register and kill the engine noise. I don't think it >> would be a very satisfactory experience, which is why I was thinking of >> mounting 10 or so magnets around the chainwheel, to be able to sample >> the cadence every 0.1s. >> > That would be a good rate. But for a realistic result you also > need to measure the force you are putting on the pedals, or the > chain tension - the noise of an engine depends very much on the > amount of power it has to deliver. > Nick Copeland suggested simulating the force applied to the pedals by calculating the rate of change of the cadence. I reckon that might do the trick. > I've been working on engine noise simulation - it's not very > difficult unless you want to exactly simulate an existing car. > That sounds promising :) _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
