[1.1.48] Cargo-wagon and artillery-wagon's working_sound doesn't work

[snouz]

WHAT
Cargo Wagon's property working_sound actually doesn't produce sound. You can hear the "tie" sound but not "__base__/sound/train-wheels.ogg"
It does work on Fluid Wagon and Locomotive though.

HOW TO REPRODUCE
Create a track with a very long train with plenty of each wagon type in a row. Zoom in. You can only hear the locomotive engine, tie sound and fluid wagon's working sound (the wheel sound), but not artillery and cargo.

HYPOTHESIS
I thought it could be "match_volume_to_activity = true" but then why does the fluid wagon work ?
I thought it could also be sound_minimum_speed, which is at: 0.1 (artillery and fluid) and 1 for cargo, but then, why doesn't artillery work ?

[Donion]

Thank you for the report.
The issues with artillery wagon's working sound has been fixed internally already but is not scheduled for release at the moment.
The cargo wagon does play its working_sound, however it's very quiet, I'd have to check if that was fixed already as well. If not, we'll do another pass on it.
You are correct that it's related to activity and sound_minimum_speed.

I think this can be moved to minor issues for now.

[kitcat]

I recently switched to longer trains and also noticed that the cargo wagons are very quiet.

I looked through the prototype data of 1.1.107 and sound_minimum_speed is still set to 1 for cargo wagons but 0.1 for fluid wagons. The cargo wagon sound can be fixed trivially by setting sound_minimum_speed to 0.1 as well, so I’d appreciate to see that implemented.