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Hi,Can anyone help me with creating audio for a MSTS diesel railcar ... I have recorded sounds of a South Australian railcar for use with MSTS.However, the railcars I am creating audio for have a very distinctive acceleration sound as they depart from station platforms and I'm having difficulty working out how to incorporate this into MSTS. Most "power cruise" sounds are constant so they can be looped but the sound of this railcar changes pitch and volume.How can I incorpirate this distinctive accelerating sound that changes dramatically in a matter of seconds and therefore cannot be looped? Any advice is appreciated. I have seen the tutorials on Railpage Australia™ but these have not helped with this particular problem.Thanks, Adam.
RE: Creating acceleration sounds for diesel railcar
There are a couple of general approaches you can use. One is to edit the sounds so they can be looped (it can be done with variable sounds, but is not easy) then use volume curves and frequency curves to alter the way the wavs are played in the sim. You can alter the pitch of the wav files based on speed, throttle setting, or some other variables.The other is to break up your original recording into a series of shorter wavs that play sequentially as the train speeds up or slows down. The sms file scripting can get complicated, but it can be done to great effect. However, you will probably run into problems when the train accelerates more slowly than the train you took the recording from.A hybrid approach has a series of transition-loop-transition wavs, so that you get an acceleration wav that plays once and is followed by a contant loop until the next speed threshold is reached, when the next acceleration wav is played once and a loop follows, etc. If you take a close look at the Networker Sounds I uploaded to uktrainsim.com (File ID 4688) you can see an example I did which uses sequential wavs with built-in loops defined by cue points.Jeff
RE: Creating acceleration sounds for diesel railcar
Thanks heaps for the tip.I've checked out your Networker Sounds and this hybrid approach seems like a clever way to achieve the result ... but is it possible to use this approach using combined throttle/speed as the basis? It's just that when you switch to idle in high speeds with a diesel railcar it shouldn't still sound like full throttle which is what happens based on speed alone.Thanks,Adam.
RE: Creating acceleration sounds for diesel railcar
Hi Adam,Yes, you can control the sounds using Variable 2 (throttle), though there are some drawbacks. The biggest is that you can move the throttle from 0% to 100% and back in a second or two, but a sequential set of sounds may take 10 to 30 seconds to play out. Thus it is easy to get the sounds totally out of synch with the throttle control and it may take ages to catch up. I have found that some diesel sounds react well to frequency curves, so you can run a continuous loop with the frequency and volume shifted by the throttle. You get instant sound response to throttle input, though if the frequency changes too much over the full curve it can sound rather funny at the extremes.The EnableTrigger and DisableTrigger commands can also be very useful, and though I've never used it, I think the SetStreamVolume command could probably be put to good use. I guess my main point is that the commands available within sms files are extremely powerful, and I think there is an enormous amount of manipulation that can be done. It just requires a willingness to experiment, and a bit of ingenuity to think of new ways to do things.Jeff