SLI Horns & Bells

[asteph627]

Hi All & Holiday Wishes

I have some SLI engine horns which sound more like a steam horn rather than a diesel loco horn. I have double clicked the horn.wav and the horn sounds normal. However, once I use the horn in an activity the sound is high pitched and sounds more like it should be on an English steam engine. Any suggestions?

AJ

[MCDemuth]

Hi All & Holiday Wishes

I have some SLI engine horns which sound more like a steam horn rather than a diesel loco horn. I have double clicked the horn.wav and the horn sounds normal. However, once I use the horn in an activity the sound is high pitched and sounds more like it should be on an English steam engine. Any suggestions?

AJ

I think you will find that most WAV files are recorded at: 11025 & 22050. MP3 quality WAVs are frequently recorded at 44100. Your Sound files... ".SMS" files... need to reference the correct WAV File information.

If I recall Correctly, If it plays to high, and the information that is listed in the SMS File is 22050, the value needs to be changed to 11025.

Go into your Sound files... ".SMS" files...
and find the section that references your horn .WAV File...
Look just below that, for the section called: "FrequencyCurve"
And adjust the frequency information in the subsection called "CurvePoints"

NOTE: Some sounds are designed to change with Doppler effect or throttle adjustments. There may be multiple values listed that you will have to adjust. Use the same percentage value of change, for each number, to keep the same effect.


Example:

This:

FrequencyCurve(
Variable2Controlled
CurvePoints ( 4
0.125 20050
0.250 18050
0.500 22050
0.875 28050
)

Becomes:

FrequencyCurve(
Variable2Controlled
CurvePoints ( 4
0.125 10025
0.250 9025
0.500 11025
0.875 14025
)





I hope this helps.

Sorry, I am not an Audio Terminology Expert, perhaps someone could clarify...

But this did happen to me... I swapped out a horn that was 22050, for one that was 11025, and it played high pitched. Then I changed the SMS file data, from 22050 to 11025, and that fixed the problem.

FrequencyCurve(
SpeedControlled
CurvePoints ( 3
-100 11025
0 11025
100 11025
)

[asteph627]

That fixed the problem. Thank you and Merry Christmas!

[ebnertra000]

From MCDemuth -
Sorry, I am not an Audio Terminology Expert, perhaps someone could clarify...

The term I've always heard is frequency curve, even if all the entries have the same frequency.
SLI horns are usually at 22KHz (22050 Hz to be exact), while most newer horn clips, mine included, are at 44KHz (44100 Hz). I usually try to include instructions in my packs on how to place them in your .sms files, but I know of at least a couple of cases where I've forgotten to include them

[Don6218]

Thank you for this posting. It would seem that in the last two Experimental updates of OR this has something to do with the horn sounds.

I also had some that were "Squeakey" sounding that were perfectly OK before the updates. My next update is X3700. I will see what I end up with. I really like these updates, don't get me wrong, just that some things that are not listed seem to change a little.

I will use that formula and see how they sound after the change.