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Adjusting the Sound Effects
decrease the value of CV 58. This procedure will oaken the
gear factor of the LokSound V4.0 decoder.
13.4.1. Minimum distance of steam chuffs
Quite small driving wheel diameters are likely to make the steam
chuffs sound very good at small and medium speeds; however
during high speed it sounds strangely distorted and ticked off. This
has often to do with an excessive terminal speed that isn´t proto-
typical at all. The minimum distance, which two steam chuffs need
to have, can be set with the help of CV 249T to reach a satisfac-
tory sound. A unit of 1 ms allows a quite exact adjustment.
If you are still not satisfied with the sound during high speed, you
should increase CV 249 gradually while the sound is switched on,
until the sound gets more natural since the steam chuffs are set
further apart.
13.5. Random sounds
LokSound decoders offer some random sounds, such as air com-
pressor, air outlet valve, coal shovelling or similar sounds, which
makes the scene more realistic. This sound will be played-back in
random intervals. You can adjust the "rate" for these sounds.
In CV 61, you need to set the minimum delay between two ran-
dom sounds. The unit is 0.25 seconds. The default value of 75
results in 18.75 seconds.
In CV 62, you can set the maximum delay between two random
sounds. At the end of the programmed time, another random
sound will be played. The unit is 0.25 seconds. The default value
of 200 results in 50 seconds.
If you don't like random sounds, simply set CV 61 = 0 and CV 62
= 0 to disable this feature.
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13.6. Adjusting the braking sound threshold
The LokSound decoder is able to play a wheel-synchron brake
sound. To play a brake sound, Damit das Bremsgeräusch ab-
gespielt wird, there are several conditions necessary:
• The braking time in CV 4 is set sufficiently high (at least value 20
or higher).
• The loco drives with high speed at the time of the braking com-
mand.
• The loco receives the driving command "Speed step 0".
The LokSound decoder will now start to play the braking sound
at the time determined in CV 65. The higher the value in CV 64
is, the sooner the braking sound will be played. The default value
100 is approximately equivalent to speed step 48 of128.
The braking sound should and when the loco stopps. You are able
to do some "finetuning" with CV 65, if the loco stopps too early.
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