Audio Interfaces and clipping

[RobDickinson]

IMO you should NOT be clipping at the input stage.

There are typically several places you can boost the signal later, none of which should be clipping either…

This will depend entirely on your software you are using

[Charlie_James]

@RobDickinson

are you are using

So, if doing something like a community open mic…I have just had my interface as the ‘audio input’ for Zoom. I love the simplicity of it, but it leaves no option for boosting the signal.
Do I instead place a DAW in the middle? I haven’t tried that but certainly could.

[RobDickinson]

open mic/zoom isnt something i’ve done but yeah I think you will need something in the middle to control levels etc?

[Charlie_James]

Just to close the loop for anyone else who stumbles along this topic.

There is another topic in the open mic forum that addresses just this, though it does mean a more complicated setup with a DAW in the middle.

Getting The Right Loudness Levels and Mix

I quite agree, which is effectively what I am doing when using the Xenyx AI for the ASIO Input Capture. Although I can test each “input” individually to get a base setting, when played in realtime, vox/pa, gtr/Pod and Trio/Bass n Drums, its all presented from the Xenyx as a single stereo output. That way I get to see the whole picture. The UMC1820 would give me individual AIC “tracks” in OBS and I would have to guesstimate how the sum of the inputs equates to the single OBS output. The only way…

[HappyCat]

I’ve only done a few recordings. A few collabs.
The person I collabed with taught me a couple of things about clipping.

1. If your to quite, and your at max right before clip on the interface. Try adj. the gain up (not volume) in your daw.
2. If your playing with others and your not loud enough when played back. Instead of turning ‘me’ up, try turning everything (other players) else down.

Just a thought. Don’t even know if it’s applicable…

[TheMadman_tobyjenner]

Dale

For OMs you don’t need to go down the DAW route, it gets pretty complicated. As easy win is to send the audio and video to OBS. You can do AVOYP recordings there or send the audio and video to Zoom for OMs. The audio input capture sources can be boosted by adding a gain preset but also a limiter to avoid clipping.

I also use a Loudness Meter (Youlean) so you can get to the optimum levels for YouTube. But Zoom seems to lose about 2db on any input (at least) so you can push it further from OBS.

Check out the OM Tech threads on set up. There is one that cover OBS use for OMs.

These may help

Getting The Right Loudness Levels and Mix

Following on from Open Mic 10, some questions were raised about optimum loudness levels and how to achieve them. I had been having a side bar conversation with @davidp following his recent OBS experiments and some of this was centred on using loudness meters. So rather than re-invent the wheel, I’ll let this guy describe how he uses Youlean Loudness Meter 2 which can be obtained as freeware and upgraded to pro at a reasonable price (mho give the tools capabilities). It can be added as a VST plu…

Using OBS with an Audio Interface on Windows for streaming to send to Zoom

Introduction This is a brief explanation of how to use a multi-channel audio device, such as a Focusrite Scarlett Solo, or a Behringer UMC204HD (as in my case) with OBS on Windows to support streaming to Zoom or other video conferencing applications. Note that this isn’t a tutorial on using OBS or using OBS for streaming to Zoom. This posts focuses on getting the audio interface set up with OBS so that you can perform mixing between the two inputs, and apply separate plugins to those inputs. …

[Charlie_James]

@TheMadman_tobyjenner

se a Loudness Meter (Youlean) so you can get to the optimum levels for YouTube. But Zoom seems to lose about 2db on any input (at least) so you can push it further from OBS.

Thanks Toby,
The last OM was the first time I tried OBS - and I thought I had looked into audio boosting - but probably didn’t spend too much time on it. I want to grab that loudness meter for other reasons as well - so I’ll start there.
Appreciate it!

[TheMadman_tobyjenner]

If you need advice on the OBS audio “tweaks” just shout. Or you can just boost the output on the OBS Audio Mixer.

[theoldman66]

I’d been meaning to post a similar question, but this seems an appropriate place for my twopenn’orth. I have a cheap chinese focusrite knockoff that cost me £25 (Brand new) off ebay, which I’ve started to think about replacing. I’ve been wondering if a real focusrite* would give me huge improvements, or if I might as well stay with what I’ve got.

First problem is noise, the AI itself introduces an absolute shedload of hiss into the signal on both channels. My workaround for the OM was to route the signal via OBS, with an instance of Reafir-standalone in subtract mode on each channel, which successfully gets rid of the unwanted noise.

Second problem is clipping. On the gain dial for the guitar channel, the 0 stop is at 6 o’clock. I can’t move the dial much past 8 o’clock without horrendous clipping! Workaround for that is to start at zero, edge the gain dial up to nearly 8 o’clock and then fettle the levels with a gain plugin and the Youlean loudness meter in OBS

So, focusrite* users, if I upgraded to a real focusrite*, would I be able to use it directly as the input to zoom without sounding like I’m playing in a nest of snakes? And would I have a usable gain control on the AI?

Thanks in advance

*(or other reputable make of AI)

[RobDickinson]

@theoldman66

First problem is noise, the AI itself introduces an absolute shedload of hiss into the signal on both channels.

Make sure this isnt your guitar. But I dont get unexpected noise on my 2i2.

This is one of the things a good AI is supposed to not do…

My gain knob on the 2i2 is set just past the mid position tho, I could prob push it more but no need, it doesnt amber clip on thrashing a guitar.

[theoldman66]

@RobDickinson

Make sure this isnt your guitar

It’s not unless it’s a problem with all 6 guitars

@RobDickinson

a good AI

for the £25 it cost, I’m surprised it works at all!

@RobDickinson

I dont get unexpected noise on my 2i2.

@RobDickinson

My gain knob on the 2i2 is set just past the mid position…it doesnt amber clip on thrashing a guitar.

These comments reinforce my hankering to get a genuine focusrite or similar. Thanks Rob

[RobDickinson]

@theoldman66

These comments reinforce my hankering to get a genuine focusrite or similar. Thanks Rob

Tbh I know there are a number of similar AI’s around with different specs (some better…) but going with the popular option here for me was a smart choice it’s great

[jgottwals]

Ian – I did a Focusrite 2.2 (1st Gen!!) direct to Zoom on the advice of our good friend @TheMadman_tobyjenner and it worked a charm on Saturday. It was much easier than what I had tried to do initially and it sounded ok using both channels. I never had to worry about the dreaded “red zone”. . .I am happy with my Focusrite and I believe that the old adage that ya get what you pay for is still largely true. . .my advice would be to look at lots of reviews of the focusrite you want and then decide if it’s suitable for your needs. Happy hunting!!
J.

[adi_mrok]

Hi Dale I think there is a key bit here missing from all the discussions held on this particular subject - what is very important IMHO is what level is your volume knob on AI, also what is the volume level on your laptop’s OS, and one you don’t have influence on - how others have dialed in.

I think best way to handle clipping is to make sure your both dials you have control on are set to about 50-60%. Then you play with the volume on your amp/guitar. And that is usually a key for me when I am not doing an overcomplicated setup myself.

[Charlie_James]

@adi_mrok

est way to handle clipping is to make sure your both dials you have control on are set to about 50-60%. Then you play with the volume on yo

Hey Adi,
My AI knobs are at about 50%. I’m still playing around - but I’m getting decent recording levels in both windows and OBS. So I think my issue is somewhere in Zoom land.

I had previously set up my Zoom input to be the audio interface, as for some reason I wasn’t (and am still not) - able to get the OBS audio into Zoom.

But currently experimenting

[adi_mrok]

Have you checked your mic levels on zoom end in audio settings, if it’s not too high or too low? There is a bar in there as well.

As for OBS to Zoom it’s always a tricky challenge for me and only way I was able to get it working without sync issues was by using ReaRoute plugin. Any other method just wasn’t working for me for some reason…

[Charlie_James]

Yeah, that one is set almost full. BUT - I think I have a lead.
If I change my zoom audio input while in a meeting - the level seems to drop.

I do this often in OM’s - because I want to use one headset for listening and cheering.
But then I switch over to the AI before performing, allowing me to use my in ear monitors and microphone.

As I said, still experimenting. I’ll likely try to get OBS audio to go through as it would be nice to have a bit more control anyway

[adi_mrok]

If you switch audio input over in zoom are zoom levels changing and going to default every single time? Or maybe original music needs ti be enabled on each time you swap over your input and when you forget to do this it goes more quiet? Just a few thoughts

[Charlie_James]

@adi_mrok

aybe original music needs ti be enabled on each time you swap over you

Thoughts are much appreciated!

Original Music does indeed seem to switch back ( not the master switch in settings - but the 'in-window one). But regardless, even after switching that back, it seems to drop the level. No idea why yet.

I did manage to get OBS audio working. Needed to change audio monitoring to “Monitor and Output” so that’s one thing sorted. Which is great - because I’ve had enough fiddling for one night

[Charlie_James]

@adi_mrok

ny other

What kind of sync issues were you getting? I have it technically working - but only as a proof of concept and haven’t tried to make any kind of real life recording. sO I’m wondering what else I should look out for.