[Voxengo SPAN] Spectrum Levels vs "Out" Meter
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- KVRer
- Topic Starter
- 27 posts since 28 Nov, 2021
In SPAN, there's a middle section which is the spectrum and then there's a meter on the right labeled "Out", which is by default measuring the dBFS. I'm having trouble understanding why the two don't seem to have the same values.
As seen on this screenshot, the meter on the right is showing peak levels of 0dB while the spectrum is showing -30dB. Is the spectrum not measuring the same dBFS as the meter? Or is the meter simply taking the entire spectrum and combining it into one value?
Voxengo doesn't seem to have its own forums and the user manual doesn't explain this, so I'm not sure where else to ask this.
As seen on this screenshot, the meter on the right is showing peak levels of 0dB while the spectrum is showing -30dB. Is the spectrum not measuring the same dBFS as the meter? Or is the meter simply taking the entire spectrum and combining it into one value?
Voxengo doesn't seem to have its own forums and the user manual doesn't explain this, so I'm not sure where else to ask this.
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- KVRAF
- 4065 posts since 2 Jul, 2005
"Or is the meter simply taking the entire spectrum and combining it into one value?" That's how it's done (by default in almost every analyzer). There are other options for how this is handled too. I use MAnalyzer all the time these days so I haven't diddled around in SPAN in a while.
Don't F**K with Mr. Zero.
- KVRAF
- 4021 posts since 7 Sep, 2002
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- KVRian
- 855 posts since 15 Jul, 2016
Watch this short vide that shows what happens with the level when a 100Hz sine wave is mixed with a 1KHz sine wave:
https://gfycat.com/jealousdefinitekoalabear
Your signal’s level is actually what you read on the level meter. The spectrum you see is just a mathematical representation (“decomposition”) calculated from your complex signal.
So a bit counterintuitively, the bands don’t need to peak at 0 dBFS in order to have the entire signal peaking at zero (as you can see from the short vid above).
https://gfycat.com/jealousdefinitekoalabear
Your signal’s level is actually what you read on the level meter. The spectrum you see is just a mathematical representation (“decomposition”) calculated from your complex signal.
So a bit counterintuitively, the bands don’t need to peak at 0 dBFS in order to have the entire signal peaking at zero (as you can see from the short vid above).
exist01 wrote: ↑Sun Nov 28, 2021 4:04 am In SPAN, there's a middle section which is the spectrum and then there's a meter on the right labeled "Out", which is by default measuring the dBFS. I'm having trouble understanding why the two don't seem to have the same values.
As seen on this screenshot, the meter on the right is showing peak levels of 0dB while the spectrum is showing -30dB. Is the spectrum not measuring the same dBFS as the meter? Or is the meter simply taking the entire spectrum and combining it into one value?
Voxengo doesn't seem to have its own forums and the user manual doesn't explain this, so I'm not sure where else to ask this.
♫