Strobe reference level

[yentzee]

Hi,
when producing sessions I wonder what the reference level of the strobesignal is.
Different sessions seem to have different referencee levels. I downaloaded the mind suite of this forum and the enkidu sessions as well and it seems that the strobelevel of the enkidu sessions seems to be much higher. I am asking because if I am right that would mean either one isn't using the whole brightness resolution or the other one is clipping which when using sinewaves for example will lead to a sinewaveshape of the modulation signal becoming more like a square wave signal.
Thanks for helping,
Cheers,
Jens

[Andy]

Are you referring to SpectraStrobe or AudioStrobe encoded sessions?

[yentzee]

Hi,
thanks for your answer. Primarily audiostrobe but it would be great ti know both.
Cheers,
Jens

[Andy]

Here's some information which may or may not help...
https://github.com/Lumasonic/Lumason...-and-mixing.md

[yentzee]

Awesome, thanks a lot

[JoeV]

Hi,
When producing sessions, I wonder what the reference level of the strobe signal is.
Different sessions seem to have different reference levels. I downaloaded the mind suite of this forum and the enkidu sessions as well and it seems that the strobelevel of the enkidu sessions seems to be much higher. I am asking because if I am right that would mean either one isn't using the whole brightness resolution or the other one is clipping which when using sinewaves for example will lead to a sinewaveshape of the modulation signal becoming more like a square wave signal.
Thanks for helping,
Cheers,
Jens

Hello Jens

When you say "reference level," I assume you mean the reference signal used to control color changes and similar features in Spectrastrobe. It also tells the Limina or Kasina that it is a Spectrastrobe session. If no reference signal is heard, the unit will assume it is an Audiostrobe and will only hear the green signal, which is also the Audiostrobe frequency. The "level," I presume, is the volume of that track. The volume of the reference track will affect the brightness of all three colors. The lower the volume, the brighter the colors. If you set the volume too low, it will drop into Audiostrobe mode.

The tracks used to control Audiostrobe and Spectrastrobe are ultrasonic soundtracks. You can't hear them (maybe your dog can ), but they still affect the digital ceiling of your total sound volume for all tracks. If you set the AS or SS signals too high, it can cause clipping. Adjust all of your soundtracks' volumes until they are below your digital threshold. You can use a limiter, but be careful, as a limiter will affect the light tracks as well. It is best to isolate the light tracks into a folder or bus and apply the limiter to the other soundtracks that may be causing the clipping.

[yentzee]

no i was referring to the max level of the modulated 19.2 khz signal. i now went with -24db peak. it is important to know to make use of the full resolution and not introduce clipping .

[JoeV]

No, I was referring to the max level of the modulated 19.2 kHz signal. I now went with -24db peak. It is essential to know how to use full resolution without introducing clipping.

That would depend on the project's total volume at any given time. Audiostrobe does not need much signal to reach maximum brightness in the LEDs for eyeware use. Audiostrobe never gives me a problem with complex sessions clipping. Sepectrobe adds four tracks into the mix.

I guess to answer your question, put a 19,200 Hz tone in your DAW and increase the volume until it starts clipping, then note the setting.