linuxaudio.org

On 04/03/10 11:27, fons@kokkinizita.net wrote:

quoted text
> 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.

quoted text
> 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@lists.linuxaudio.org

http://lists.linuxaudio.org/listinfo/linux-audio-user