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View Full Version : Follow-up Question: Pitch changing


Crassus
01-15-2002, 09:55 PM
Technically, this should have gone in my last post, but as not to create confusion, I'm making a new thread:

Pitch changing.. what I mean by that is when throttling up and down, MSTS bends the pitch of the engine .wav file up or down to simulate a smooth blend between .wav files..

Now, a few people have mentioned in other posts about a way to increase the volume of the external view sound file is to increase the actual volume OF the sound file in an editor. Now, at first, this seemed to be the obvious answer, and in fact, I tried that before ever reading people's posts on the subject. However, after I had done so, I noticed the pitch bending effect had been lost. I'm also guessing this has something to do with cue points, as the cue points are lost when increasing the volume of the horn as well for looping.

This sucks. :) Is there any way to stop it? What *I'm* guessing is I would have to use a sound editor that actually has the capability of cue points, and thus it would recognize them in the sound file, retaining them. This is all conjecture, so someone tell me if I'm good at guessing these things.

If indeed it's to do with cue points, am I also guessing correctly that the pitch change happens after a cue point, basically letting it complete the sound file, then jumping to the next and begins looping that one?

scefhwil
01-18-2002, 08:53 PM
>Pitch changing.. what I mean by
>that is when throttling up
>and down, MSTS bends the
>pitch of the engine .wav
>file up or down to
>simulate a smooth blend between
>.wav files..

Do you say this because it's what you hear, or because of the comments in the .sms files?

>Now, a few people have mentioned
>in other posts about a
>way to increase the volume
>of the external view sound
>file is to increase the
>actual volume OF the sound
>file in an editor. Now,
>at first, this seemed to
>be the obvious answer, and
>in fact, I tried that
>before ever reading people's posts
>on the subject. However, after
>I had done so, I
>noticed the pitch bending effect
>had been lost. I'm also
>guessing this has something to
>do with cue points, as
>the cue points are lost
>when increasing the volume of
>the horn as well for
>looping.

Yeah, good points, but I don't think the cue points are involved in the pitch shifting, because that is achieved using the Frequency Curve.

>This sucks. :) Is there any
>way to stop it? What
>*I'm* guessing is I would
>have to use a sound
>editor that actually has the
>capability of cue points, and
>thus it would recognize them
>in the sound file, retaining
>them. This is all conjecture,
>so someone tell me if
>I'm good at guessing these
>things.

Goldwave, which has been mentioned many times in previous threads, is a cue-point enabled shareware sound editor. Search the net for it.

>If indeed it's to do with
>cue points, am I also
>guessing correctly that the pitch
>change happens after a cue
>point, basically letting it complete
>the sound file, then jumping
>to the next and begins
>looping that one?

To fully understand the cross fading and pitch shifting I would suggest you plot a single graph of these againt Variable2. Not done it for a diesel myself, only the Fscot. This showed quite clearly that the pitch shifting just made each wave file sound like it was speeding up, and that the volume fading enables the 'smooth' crossover of between wave files playing alternatly on two sound streams.

I think the answer to your problem is to use Goldwave to increase the file volumes.