Welcome to %s forums

BrainModular Users Forum

Login Register

channels' gain structure

General Discussion about whatever fits..
Post Reply
unguitar
Member
Posts: 126
Contact:

Unread post by unguitar » 15 Aug 2006, 02:24

Hi,
I have a signal coming in through a channel and it is sent to an output with nothing in between.
I notice that if I compare the meter's value ( input signal coming into the track with output signal going out) I see the output signal is stronger.
This is causing overloading the output.
It can be easily seen on the tracks in/outs on top right.
The channel output is set to 0dB.
Is there any gain hidden somewhere ?
thanks
______________
luca
www.unguitar.com

User avatar
senso
Site Admin
Posts: 4424
Location: France
Contact:

Unread post by senso » 16 Aug 2006, 11:52

normally, there is no "hiden gain" in the channel flow.
The signal is only copied from the input to the output.
check the input/out gain of the track?

unguitar
Member
Posts: 126
Contact:

Unread post by unguitar » 02 Sep 2006, 22:12

the strange fact is that all the tracks show the same level ( I send and distribute 0dB to all the channels) but, even if the hardware levels are all shown the same ( Rme mixer), the software output of Usine shows a boost of approx 5 dB.
I don't want to be hostinate in thinking it is a problem caused by Usine but, believe me, I don't have any boost in the signal chain so the 0 dB coming is should be 0 dB at the output.
No ?
______________
luca
www.unguitar.com

User avatar
senso
Site Admin
Posts: 4424
Location: France
Contact:

Unread post by senso » 03 Sep 2006, 11:47

I'll check out.

lalo
Member
Posts: 200
Location: italy
Contact:

Unread post by lalo » 03 Sep 2006, 11:54

unguitar wrote:the strange fact is that all the tracks show the same level ( I send and distribute 0dB to all the channels) but, even if the hardware levels are all shown the same ( Rme mixer), the software output of Usine shows a boost of approx 5 dB.
I don't want to be hostinate in thinking it is a problem caused by Usine but, believe me, I don't have any boost in the signal chain so the 0 dB coming is should be 0 dB at the output.
No ?
woukdn't just 'cause you are adding several channels at 0db.....the sum will be a little higher :)

unguitar
Member
Posts: 126
Contact:

Unread post by unguitar » 03 Sep 2006, 12:18

I also thought about it, so I set just one track on and it happens anyway.

Example:
guitar signal coming into input 1
U. input 1 feeding U. output 3/4
U. output 3/4 feeding Eventide Orville Spdif in
Eventide Orville Spdif out feeding U. input 3/4.
U. input 3/4 routed to U. Master out.
Master output is U. 7/8.

"U." stands for Usine/audio card

Signal is Unity gain ( O dB) at all stages.
The only place where it shows a different level is on the software output read by Rme mixer, where it is 5/6 dB more than what is fed.

Nice summer game ?
______________
luca
www.unguitar.com

User avatar
senso
Site Admin
Posts: 4424
Location: France
Contact:

Unread post by senso » 03 Sep 2006, 13:35

I ve just checked, on RME Fireface and Presonus Firebox.
It Works without any gain modification. (exactly the same signal from in to out)

Lalo is probably right: do you add the signal from input 1L and 1R together. (the wire from inL goes in the same input module than the wire from inR somewhere in your patch).
I that case the signal is added to itself, and cause a gain modification of +6db?

unguitar
Member
Posts: 126
Contact:

Unread post by unguitar » 03 Sep 2006, 17:46

I am happy to know it's my fault, really.
The only problem is that I really want to know where I am putting that gain stage as I have also been to bed with my laptop but still she doesn't tell me where is the tricky connection...
I am sorry to disturb with an evident lack of comprehension but this could be the last step to bring my live set up to be based on Usine.
thanks for your time
______________
luca
www.unguitar.com

User avatar
senso
Site Admin
Posts: 4424
Location: France
Contact:

Unread post by senso » 03 Sep 2006, 18:55

Don't worry, Usine is a complex software and was designed for musicians, not for signal processing experts...
For me, it's important to know how users understand Usine, to improve the software, and be the most clear as possible.


The most important is to communicate each other!

unguitar
Member
Posts: 126
Contact:

Unread post by unguitar » 03 Sep 2006, 23:56

Thanks for your encouraging words Olivier, as you know I am trying Usine to drive my mixed hw and sw setup, trying to dive into its routing/splitting/mixing power.
The controlling power is great considering the easy use of midilearn.
I find the interface still a little "dark" as there are many routing connections hidden in several screenshots, but I am habbit to consider that my use of music tools can be a little too specific to dream to find the perfect sw application.
The architecture in itself allows many possibilities, the problem is to visualize it.
If you like, I can send you my setup files for you to check.
let me know and thanks for your costant care.
my best,
luca
______________
luca
www.unguitar.com

User avatar
senso
Site Admin
Posts: 4424
Location: France
Contact:

Unread post by senso » 04 Sep 2006, 09:01

interesting, please send me your workspace at contact@sensomusic.com

Post Reply

Who is online

Users browsing this forum: Google [Bot] and 33 guests