[LAU] Trying to record!

[David W. Jones]

I don't have a USB3 port on my laptop and only use a Behringer UAC-202 on a laptop USB2 port. There, Audacity records just fine.

I also have a powered USB2 hub. When I plugged the UAC into the hub, the input signal level dropped by half plus there was noticeable power hum. Unplugging the hub's power supply fixed the hum but not the signal level.

So it's possible the USB3 port and/or internal hub behind it has a flakey connection somewhere. I think Ralf mentioned that.

But glad you can record. The only Presonus I have here is Firewire and we no longer have anything with Firewire around.

On January 9, 2019 4:13:50 PM HST, Bob van der Poel <bob at mellowood.ca> wrote:
> Hey, me again. Back at it ... same problems :) But, I _think_ I
> figured out
> the problem ... it's the USB port. If I use the "easy to get at port",
> I'm
> using a USB3, and it creates the problem. If I use a harder to reach
> port,
> USB2, all works fine. Don't need to use pasuspender, don't need to
> turn off
> pulse audio ports, etc. Just run audacity and it all works.
> 
> To recap, I'm using a Presonus Audiobox USB connected to my PC and
> running
> Audacity to do some simple recording. The USB3 port gives me scrambled
> recordings ... the USB2 port works fine.
> 
> So, do I have a bum port or is this normal?
> 
> On Thu, Dec 20, 2018 at 8:18 PM Bob van der Poel <bob at mellowood.ca>
> wrote:
> 
> >
> >
> > That is strange that modifying the PulseAudio settings first makes a
> >> difference.
> >> All I have to go on is the man page for pasuspender, which states:
> >> "pasuspender  will suspend access to the audio devices"
> >>
> >> Good to know that you figured out how to work around it.
> >>
> >
> > Not saying that one really needs to do this ... just that it worked
> for me
> > today. I've not had a chance to try it a 2nd time, as they say "'tis
> the
> > season to be weary", but I will next week when things settle down a
> bit.
> >
> >
> >> > Only one more issue is that I can't adjust the gain in audacity
> for the
> >> > mic.
> >>
> >> The interface only has hardware knobs to control gain, Audacity
> will not
> >> be able to change the gain of the mic preamp.
> >>
> >
> > I sort of figured that.
> >
> > Or did you mean you wanted to change the gain of the recorded track
> after
> >> recording?
> >>
> >
> > That's easy to do and works fine.
> >
> > I don't recall if you mentioned what type of mic you use, the
> Audiobox
> >> only has a maximum gain of 35dB.  Should be more than enough for
> close
> >> position on instruments with a condenser mic, would not be enough
> to
> >> record a small chamber group from mid auditorium with ribbon mics. 
> For a
> >> mic relatively closely positioned to your saxophone that should be
> enough
> >> gain available.
> >>
> >
> > I was doing my testing with a cheap dynamic. I'll have a go later
> with a
> > condenser. I will want to use my ribbon for sax recording, but at a
> close
> > distance. So, it should be fine. And, if not, I can always stick an
> amp
> > (well, mixer) into the loop.
> >
> > The instrument input actually has more gain available, up to 50dB,
> so
> >> depending on what you need using the unbalanced input might work
> better.
> >>
> >
> > That's interesting. I have a 3pin to 1/4 cable laying about. I'll
> give
> > that a go and see what happens. Would this effect the quality of the
> signal?
> >
> > So much easier, for an acoustic guy like me, to not get involved in
> all
> > this recording stuff :)
> >
> > --
> >
> > **** Listen to my FREE CD at http://www.mellowood.ca/music/cedars
> ****
> > Bob van der Poel ** Wynndel, British Columbia, CANADA **
> > EMAIL: bob at mellowood.ca
> > WWW:   http://www.mellowood.ca
> >
> 
> 
> -- 
> 
> **** Listen to my FREE CD at http://www.mellowood.ca/music/cedars ****
> Bob van der Poel ** Wynndel, British Columbia, CANADA **
> EMAIL: bob at mellowood.ca
> WWW:   http://www.mellowood.ca

--
David W. Jones
gnome at hawaii.rr.com
authenticity, honesty, community
http://dancingtreefrog.com

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