Re: Recording with Alesis IO/2, what about the "noise"?
Mine too was on the hardware monitor. Yes, I am quite sure it is a setup issue. I returned my first unit thinking it was a hardware problem. The second one did the same thing. So I started working on the setup. One thing I believe helped was the sample rate in JACK defaults to 44100Hz. The Alesis samples at 48000Hz. I am on a new installation of Natty right now but here is JACK setup that works for me: /usr/bin/jackd -dalsa -r48000 -p256 -n2 -D -Chw:1,0 -Phw:1,0 HTH, Tim On Fri, Mar 18, 2011 at 9:11 AM, Giuliano Braglia wrote: > > > 2011/3/17 Thomas Orgis > >> Am Thu, 17 Mar 2011 13:31:23 -0500 >> schrieb Timothy Cook : >> >> > I have this device as well. When I first used it I had the same issue. >> > Playing around with the settings in QJackCtl finally eliminated it. >> >> Hm, I don't remember such an issue. I do remember ground loop noise >> induced with the help of the laptop's crappy wiring, but that did not appear >> on recordings and was also helped by exploiting the balanced outputs (ground >> lift). >> But what I can imagine is that the input gain is set too high -- noise >> characteristics of amplifiers are not best at full tilt. When JACK settings >> fix it ... then it's a weird side effect of the driver, certain period >> setup? Funny. >> > > Actually, my noise could not be related to JACK, because it is present even > without it, when I listen through the direct monitor. > > You think that I should also check if my pc is properly wired with the > ground lift? > > > > -- > Ubuntu-Studio-users mailing list > Ubuntu-Studio-users@lists.ubuntu.com > Modify settings or unsubscribe at: > https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-users > > -- Timothy Cook, MSc Project Lead - Multi-Level Healthcare Information Modeling http://www.mlhim.org LinkedIn Profile:http://www.linkedin.com/in/timothywaynecook Skype ID == timothy.cook Academic.Edu Profile: http://uff.academia.edu/TimothyCook You may get my Public GPG key from popular keyservers or from this link http://timothywayne.cook.googlepages.com/home -- Ubuntu-Studio-users mailing list Ubuntu-Studio-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-users
Re: Recording with Alesis IO/2, what about the "noise"?
2011/3/17 Thomas Orgis > Am Thu, 17 Mar 2011 13:31:23 -0500 > schrieb Timothy Cook : > > > I have this device as well. When I first used it I had the same issue. > > Playing around with the settings in QJackCtl finally eliminated it. > > Hm, I don't remember such an issue. I do remember ground loop noise induced > with the help of the laptop's crappy wiring, but that did not appear on > recordings and was also helped by exploiting the balanced outputs (ground > lift). > But what I can imagine is that the input gain is set too high -- noise > characteristics of amplifiers are not best at full tilt. When JACK settings > fix it ... then it's a weird side effect of the driver, certain period > setup? Funny. > Actually, my noise could not be related to JACK, because it is present even without it, when I listen through the direct monitor. You think that I should also check if my pc is properly wired with the ground lift? -- Ubuntu-Studio-users mailing list Ubuntu-Studio-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-users
Re: Recording with Alesis IO/2, what about the "noise"?
Am Thu, 17 Mar 2011 13:31:23 -0500 schrieb Timothy Cook : > I have this device as well. When I first used it I had the same issue. > Playing around with the settings in QJackCtl finally eliminated it. Hm, I don't remember such an issue. I do remember ground loop noise induced with the help of the laptop's crappy wiring, but that did not appear on recordings and was also helped by exploiting the balanced outputs (ground lift). But what I can imagine is that the input gain is set too high -- noise characteristics of amplifiers are not best at full tilt. When JACK settings fix it ... then it's a weird side effect of the driver, certain period setup? Funny. > In Ardour the is an option to have Ardour do the monitoring. But I do have to wonder about that - direct, latency-free (virtually) hardware monitoring via the "monitor - usb" knob is a good thing to have, and use. But well, if you need your guitar distortions applied, I assume you use something like Rakarrack in chain with ardour ... and that can be routed to your monitor output via qjackctl, independently of ardour. I just say that someone who uses Ardour for some years now and never bothered to get monitoring inside Ardour. Alrighty then, Thomas. signature.asc Description: PGP signature -- Ubuntu-Studio-users mailing list Ubuntu-Studio-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-users
Re: Recording with Alesis IO/2, what about the "noise"?
I have this device as well. When I first used it I had the same issue. Playing around with the settings in QJackCtl finally eliminated it. In Ardour the is an option to have Ardour do the monitoring. HTH, Tim On Thu, Mar 17, 2011 at 12:16 PM, Giuliano Braglia wrote: > Hi Community! > > I aknowledge that I am not an expert :) as some of you know, i have just > bought this card, and started experimenting. It's wonderful ;)... > > Tecnical issue: there's a sound "ss" (I don't know its name in > english) when listening/recording to an input, mic or guitar, that results > also in a slight noise in the recording. > > I guess it's normal. But I wonder why it is there. Is it due to the quality > of the card? Of the microphone? Of the cable? Of my armchair? :p > > And, do you think that there is a way to reduce it a bit? A setting or > whatelse... > > > More: > > Why I'm not able to listen to myseln directly through Ardour? I set > everything ok, input to "audio1", "audio1" to "master", "master" to > "speaker". I can record, I can listen to what I record, but I can't listen > to myself while I record :) > > > > > -- > Ubuntu-Studio-users mailing list > Ubuntu-Studio-users@lists.ubuntu.com > Modify settings or unsubscribe at: > https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-users > > -- Timothy Cook, MSc Project Lead - Multi-Level Healthcare Information Modeling http://www.mlhim.org LinkedIn Profile:http://www.linkedin.com/in/timothywaynecook Skype ID == timothy.cook Academic.Edu Profile: http://uff.academia.edu/TimothyCook You may get my Public GPG key from popular keyservers or from this link http://timothywayne.cook.googlepages.com/home -- Ubuntu-Studio-users mailing list Ubuntu-Studio-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-users
Recording with Alesis IO/2, what about the "noise"?
Hi Community! I aknowledge that I am not an expert :) as some of you know, i have just bought this card, and started experimenting. It's wonderful ;)... Tecnical issue: there's a sound "ss" (I don't know its name in english) when listening/recording to an input, mic or guitar, that results also in a slight noise in the recording. I guess it's normal. But I wonder why it is there. Is it due to the quality of the card? Of the microphone? Of the cable? Of my armchair? :p And, do you think that there is a way to reduce it a bit? A setting or whatelse... More: Why I'm not able to listen to myseln directly through Ardour? I set everything ok, input to "audio1", "audio1" to "master", "master" to "speaker". I can record, I can listen to what I record, but I can't listen to myself while I record :) -- Ubuntu-Studio-users mailing list Ubuntu-Studio-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-users
