"Rail Clack" sound effect, synchronise?

[philsandy]

Have a few locos with this sound effect, sounds good, but the "clacks" are regular, they do not increase with the speed of the loco. Is it possible (easy?) to synchronise this effect, like steam chuffs?

[Hamburger]

Within limits yes when you have an ESU decoder.

 

[philsandy]

14 minutes ago, Hamburger said:

Within limits yes when you have an ESU decoder.

 

 

They are ESU V4 decoders. How is it done, and what are the limits?

[pauliebanger]

Yes speed related Rail Clack is simple to achieve, if you want it.

 

My recent ZIMO projects for DMUs feature speed related Rail Clack (selectable On or Off with an F key). Needs to be built into the project at the time of creation.

 

A cheaper option, maybe, is to make fine cuts in your railheads, say 0.5 to 1mm deep at scale 60ft intervals, then all you stock will automatically have speed related Rail Clack without needing a decoder. Harder to adjust the volume level, though. LOL.

 

Best regards,

 

Paul

 

[Hamburger]

12 minutes ago, philsandy said:

 

They are ESU V4 decoders. How is it done, and what are the limits?

Limits depend on what the creator of the file built into the sound.

But in any case you can try to make the playback speed of the sound dependent on the loco's speed (if the creator has provided this in the file).
It is worth a try.

To do this, you need to know which sound slot the clack is in.

Either the retailer has sent you a document where it is listed, or you have received a CV list for the volume of all sounds. If you can tell me the volume CV of the clack sound, I can tell you the corresponding CVs for the playback speed.

[philsandy]

1 hour ago, Hamburger said:

Limits depend on what the creator of the file built into the sound.

But in any case you can try to make the playback speed of the sound dependent on the loco's speed (if the creator has provided this in the file).
It is worth a try.

To do this, you need to know which sound slot the clack is in.

Either the retailer has sent you a document where it is listed, or you have received a CV list for the volume of all sounds. If you can tell me the volume CV of the clack sound, I can tell you the corresponding CVs for the playback speed.

 

Managed to find some info on one of the locos only, the clack is in slot 15 and volume is CV371.

[Hamburger]

Fine. The related sound speed CVs are CV 373 for the sound playback speed at controller speed step 1 and CV 374 for the sound playback speed at the highest controller speed step.

Defaults are 128 so as a first try it should be value 112 for CV 373 and value 248 for CV 374. Value 128 means normal playback speed, higher values mean faster.

 

This is the simplest way to try and maybe it is not as expected because the frequencies of the sounds slightly change but should be worth a try. Change in steps of 4 or 8.

 

IMPORTANT NOTE:

before you change any of these sound slot config CVs, set CV 31 = 16 and CV 32 = 1, this is mandatory (same procedure as with volume settings).

 

If there is no change, the sound wasn't set up for speed dependent sound.

[philsandy]

1 hour ago, Hamburger said:

Fine. The related sound speed CVs are CV 373 for the sound playback speed at controller speed step 1 and CV 374 for the sound playback speed at the highest controller speed step.

Defaults are 128 so as a first try it should be value 112 for CV 373 and value 248 for CV 374. Value 128 means normal playback speed, higher values mean faster.

 

This is the simplest way to try and maybe it is not as expected because the frequencies of the sounds slightly change but should be worth a try. Change in steps of 4 or 8.

 

IMPORTANT NOTE:

before you change any of these sound slot config CVs, set CV 31 = 16 and CV 32 = 1, this is mandatory (same procedure as with volume settings).

 

If there is no change, the sound wasn't set up for speed dependent sound.

 

Just tried it, but there is no change in the clack rate, so as you say probably not set up for it. Thanks for your response.