Re: [Plib-devel] OT: engine sound synthesis

[Christos D. <dim...@id...>]

>> So, the best thing to do is to record the engine from very close, then
>> somehow derive the filter description of the whole car, perhaps with
>> the exhaust as a separate model. Then resample the engine sample to
>> the appropriate frequency and pass it through the model. The result is
>> an engine sound.
>
> Thank you for the information,
> Is this what you used in TORCS?
> I could not find the TORCS mailing list thread that Steve referred to.
> Was the sound-synth discussion on torcs-devel sf list? What year?
>

I cannot remember the mailing list discussion. In torcs we just use 
resampling plus a simple low-pass filter in one implementation. 
Anything more complicated will take too much CPU time. Of course some 
cards might be able to deal with that in hardware, but I am not aware 
of any libraries that currently support arbitrary filters in 
hardware at the moment. (Maybe the OpenAL one will, soon).

> I tried out the TORCS debian packages yesterday.
> Although the engine sound is better than what I came up with, it is far
> from perfect. If I use the CVS TORCS with the OpenAL hack, will it sound
> better?
>

The best engine sound is the torcs cvs with plib. The openal version 
does not have the low-pass filter.

-- 
Christos Dimitrakakis
IDIAP (http://www.idiap.ch/~dimitrak/main.html)