CODE: SELECT ALL

arecord | aplay |

Are you using Pulseaudio or Jack or something else?

2015-04-27 9:57 GMT+00:00 Richard <zappfinger@gmail.com>:

 Posted this question also on the Raspberry Pi forum:
Hi,

I am using the Pi model 2 headless with Csound and a USB sound setup.
Had no problem with a cheap C-Media USB card, but with my Scarlett 2i2 the
input sound is terrible (noisy, weak etc)
I must say I do not use a powered USB hub, but I do have a 2A power supply
and even a small midi keyboard attached via USB. The problem also exists if
I disconnect the midi device.
Output sound is no problem here!
Only when I use input, like
 CODE: SELECT ALL
<https://www.raspberrypi.org/forums/viewtopic.php?f=28&t=108606#> arecord
| aplay |
I get the very bad sound.
Tried all available tricks (I think), but no luck yet.

Any ideas?
Richard


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Have you tried editing /etc/pulse/default.pa ?

enabling snd-usb-audio or disable module-suspend-on-idle

I'm just throwing out ideas. Usually for me when using jack, if it doesnt
work for pulseaudio it wont work for jack, jack-sink module helps too
sometimes. And if using ALSA in csound, sometimes I need to choose input
device as well to stop crackling, usually combining analog input and
digital output resaults in crackling sound via ALSA.

2015-04-27 12:45 GMT+00:00 Richard <zappfinger@gmail.com>:

 I am only using alsa at the moment...
Tried jack2, but could not get the proper device name for my Focusrite
Scarlett.

Richard

On 27/04/15 14:06, Hlöðver Sigurðsson wrote:

Are you using Pulseaudio or Jack or something else?

2015-04-27 9:57 GMT+00:00 Richard <zappfinger@gmail.com> <zappfinger@gmail.com>:


  Posted this question also on the Raspberry Pi forum:
Hi,

I am using the Pi model 2 headless with Csound and a USB sound setup.
Had no problem with a cheap C-Media USB card, but with my Scarlett 2i2 the
input sound is terrible (noisy, weak etc)
I must say I do not use a powered USB hub, but I do have a 2A power supply
and even a small midi keyboard attached via USB. The problem also exists if
I disconnect the midi device.
Output sound is no problem here!
Only when I use input, like
 CODE: SELECT ALL<https://www.raspberrypi.org/forums/viewtopic.php?f=28&t=108606#> <https://www.raspberrypi.org/forums/viewtopic.php?f=28&t=108606#> arecord
| aplay |
I get the very bad sound.
Tried all available tricks (I think), but no luck yet.

Any ideas?
Richard


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Just a thought,
you could also test the Scarlett card on another system just to make
sure the audio input of the hardware is ok

2015-04-27 22:09 GMT+02:00 Hlöðver Sigurðsson :
> Yes, sorry if jack doesn't detect the device. Then it's a deeper problem
> that I've never encountered. I once had problem with alsa detecting my hdmi
> audio. All I had to do was to edit the grub configurations and blacklist
> intel and add amd drivers. But there's 0% chances that grub is wrongly
> configured on raspi natively. But if it works fine with alsa then your
> system should be detecting your usb audio device. Also PA is abstraction on
> alsa, but from my experience broken pulseaudio equals to broken jack, I just
> had that experience recently. You can surely do pulseaudio -k and run jack,
> but if pulseaudio is screwing up with alsa configuration, then killing it
> has no effect.
>
> 2015-04-27 19:55 GMT+00:00 Richard :
>>
>> Thanks, I might give that a try, but I understood that PA is an
>> abstraction layer on top of ALSA, so I'm not sure if that would improve
>> things...
>>
>>
>>
>> On 27/04/15 20:44, Hlöðver Sigurðsson wrote:
>>
>> Have you tried editing /etc/pulse/default.pa ?
>>
>> enabling snd-usb-audio or disable module-suspend-on-idle
>>
>> I'm just throwing out ideas. Usually for me when using jack, if it doesnt
>> work for pulseaudio it wont work for jack, jack-sink module helps too
>> sometimes. And if using ALSA in csound, sometimes I need to choose input
>> device as well to stop crackling, usually combining analog input and
>> digital output resaults in crackling sound via ALSA.
>>
>> 2015-04-27 12:45 GMT+00:00 Richard :
>>
>>  I am only using alsa at the moment...
>> Tried jack2, but could not get the proper device name for my Focusrite
>> Scarlett.
>>
>> Richard
>>
>> On 27/04/15 14:06, Hlöðver Sigurðsson wrote:
>>
>> Are you using Pulseaudio or Jack or something else?
>>
>> 2015-04-27 9:57 GMT+00:00 Richard 
>> :
>>
>>
>>   Posted this question also on the Raspberry Pi forum:
>> Hi,
>>
>> I am using the Pi model 2 headless with Csound and a USB sound setup.
>> Had no problem with a cheap C-Media USB card, but with my Scarlett 2i2 the
>> input sound is terrible (noisy, weak etc)
>> I must say I do not use a powered USB hub, but I do have a 2A power supply
>> and even a small midi keyboard attached via USB. The problem also exists
>> if
>> I disconnect the midi device.
>> Output sound is no problem here!
>> Only when I use input, like
>>  CODE: SELECT
>> ALL
>>  arecord
>> | aplay |
>> I get the very bad sound.
>> Tried all available tricks (I think), but no luck yet.
>>
>> Any ideas?
>> Richard
>>
>>
>>
>> ------------------------------------------------------------------------------
>> One dashboard for servers and applications across Physical-Virtual-Cloud
>> Widest out-of-the-box monitoring support with 50+ applications
>> Performance metrics, stats and reports that give you Actionable Insights
>> Deep dive visibility with transaction tracing using APM Insight.
>> http://ad.doubleclick.net/ddm/clk/290420510;117567292;y
>> _______________________________________________
>> Csound-users mailing
>> listCsound-users@lists.sourceforge.nethttps://lists.sourceforge.net/lists/listinfo/csound-users
>> Send bugs reports to
>>         https://github.com/csound/csound/issues
>> Discussions of bugs and features can be posted here
>>
>>
>>
>>
>>
>>
>> ------------------------------------------------------------------------------
>> One dashboard for servers and applications across Physical-Virtual-Cloud
>> Widest out-of-the-box monitoring support with 50+ applications
>> Performance metrics, stats and reports that give you Actionable Insights
>> Deep dive visibility with transaction tracing using APM
>> Insight.http://ad.doubleclick.net/ddm/clk/290420510;117567292;y
>>
>>
>>
>> _______________________________________________
>> Csound-users mailing
>> listCsound-users@lists.sourceforge.nethttps://lists.sourceforge.net/lists/listinfo/csound-users
>> Send bugs reports to
>>         https://github.com/csound/csound/issues
>> Discussions of bugs and features can be posted here
>>
>>
>>
>>
>>
>> ------------------------------------------------------------------------------
>> One dashboard for servers and applications across Physical-Virtual-Cloud
>> Widest out-of-the-box monitoring support with 50+ applications
>> Performance metrics, stats and reports that give you Actionable Insights
>> Deep dive visibility with transaction tracing using APM Insight.
>> http://ad.doubleclick.net/ddm/clk/290420510;117567292;y
>> _______________________________________________
>> Csound-users mailing list
>> Csound-users@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/csound-users
>> Send bugs reports to
>>         https://github.com/csound/csound/issues
>> Discussions of bugs and features can be posted here
>>
>>
>>
>>
>>
>> ------------------------------------------------------------------------------
>> One dashboard for servers and applications across Physical-Virtual-Cloud
>> Widest out-of-the-box monitoring support with 50+ applications
>> Performance metrics, stats and reports that give you Actionable Insights
>> Deep dive visibility with transaction tracing using APM Insight.
>> http://ad.doubleclick.net/ddm/clk/290420510;117567292;y
>>
>>
>>
>> _______________________________________________
>> Csound-users mailing list
>> Csound-users@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/csound-users
>> Send bugs reports to
>>         https://github.com/csound/csound/issues
>> Discussions of bugs and features can be posted here
>>
>>
>>
>>
>> ------------------------------------------------------------------------------
>> One dashboard for servers and applications across Physical-Virtual-Cloud
>> Widest out-of-the-box monitoring support with 50+ applications
>> Performance metrics, stats and reports that give you Actionable Insights
>> Deep dive visibility with transaction tracing using APM Insight.
>> http://ad.doubleclick.net/ddm/clk/290420510;117567292;y
>> _______________________________________________
>> Csound-users mailing list
>> Csound-users@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/csound-users
>> Send bugs reports to
>>         https://github.com/csound/csound/issues
>> Discussions of bugs and features can be posted here
>>
>
>
> ------------------------------------------------------------------------------
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> Widest out-of-the-box monitoring support with 50+ applications
> Performance metrics, stats and reports that give you Actionable Insights
> Deep dive visibility with transaction tracing using APM Insight.
> http://ad.doubleclick.net/ddm/clk/290420510;117567292;y
> _______________________________________________
> Csound-users mailing list
> Csound-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/csound-users
> Send bugs reports to
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> Discussions of bugs and features can be posted here
>



-- 

Oeyvind Brandtsegg
Professor of Music Technology
NTNU
7491 Trondheim
Norway
Cell: +47 92 203 205

http://flyndresang.no/
http://www.partikkelaudio.com/
http://soundcloud.com/brandtsegg
http://soundcloud.com/t-emp

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Yes, the device works fine on my MacBook Air, the input sounds crystal 
clear...

On 27/04/15 22:23, Oeyvind Brandtsegg wrote:
> Just a thought,
> you could also test the Scarlett card on another system just to make
> sure the audio input of the hardware is ok
>
> 2015-04-27 22:09 GMT+02:00 Hlöðver Sigurðsson :
>> Yes, sorry if jack doesn't detect the device. Then it's a deeper problem
>> that I've never encountered. I once had problem with alsa detecting my hdmi
>> audio. All I had to do was to edit the grub configurations and blacklist
>> intel and add amd drivers. But there's 0% chances that grub is wrongly
>> configured on raspi natively. But if it works fine with alsa then your
>> system should be detecting your usb audio device. Also PA is abstraction on
>> alsa, but from my experience broken pulseaudio equals to broken jack, I just
>> had that experience recently. You can surely do pulseaudio -k and run jack,
>> but if pulseaudio is screwing up with alsa configuration, then killing it
>> has no effect.
>>
>> 2015-04-27 19:55 GMT+00:00 Richard :
>>> Thanks, I might give that a try, but I understood that PA is an
>>> abstraction layer on top of ALSA, so I'm not sure if that would improve
>>> things...
>>>
>>>
>>>
>>> On 27/04/15 20:44, Hlöðver Sigurðsson wrote:
>>>
>>> Have you tried editing /etc/pulse/default.pa ?
>>>
>>> enabling snd-usb-audio or disable module-suspend-on-idle
>>>
>>> I'm just throwing out ideas. Usually for me when using jack, if it doesnt
>>> work for pulseaudio it wont work for jack, jack-sink module helps too
>>> sometimes. And if using ALSA in csound, sometimes I need to choose input
>>> device as well to stop crackling, usually combining analog input and
>>> digital output resaults in crackling sound via ALSA.
>>>
>>> 2015-04-27 12:45 GMT+00:00 Richard :
>>>
>>>   I am only using alsa at the moment...
>>> Tried jack2, but could not get the proper device name for my Focusrite
>>> Scarlett.
>>>
>>> Richard
>>>
>>> On 27/04/15 14:06, Hlöðver Sigurðsson wrote:
>>>
>>> Are you using Pulseaudio or Jack or something else?
>>>
>>> 2015-04-27 9:57 GMT+00:00 Richard 
>>> :
>>>
>>>
>>>    Posted this question also on the Raspberry Pi forum:
>>> Hi,
>>>
>>> I am using the Pi model 2 headless with Csound and a USB sound setup.
>>> Had no problem with a cheap C-Media USB card, but with my Scarlett 2i2 the
>>> input sound is terrible (noisy, weak etc)
>>> I must say I do not use a powered USB hub, but I do have a 2A power supply
>>> and even a small midi keyboard attached via USB. The problem also exists
>>> if
>>> I disconnect the midi device.
>>> Output sound is no problem here!
>>> Only when I use input, like
>>>   CODE: SELECT
>>> ALL
>>>  arecord
>>> | aplay |
>>> I get the very bad sound.
>>> Tried all available tricks (I think), but no luck yet.
>>>
>>> Any ideas?
>>> Richard
>>>
>>>
>>>
>>> ------------------------------------------------------------------------------
>>> One dashboard for servers and applications across Physical-Virtual-Cloud
>>> Widest out-of-the-box monitoring support with 50+ applications
>>> Performance metrics, stats and reports that give you Actionable Insights
>>> Deep dive visibility with transaction tracing using APM Insight.
>>> http://ad.doubleclick.net/ddm/clk/290420510;117567292;y
>>> _______________________________________________
>>> Csound-users mailing
>>> listCsound-users@lists.sourceforge.nethttps://lists.sourceforge.net/lists/listinfo/csound-users
>>> Send bugs reports to
>>>          https://github.com/csound/csound/issues
>>> Discussions of bugs and features can be posted here
>>>
>>>
>>>
>>>
>>>
>>>
>>> ------------------------------------------------------------------------------
>>> One dashboard for servers and applications across Physical-Virtual-Cloud
>>> Widest out-of-the-box monitoring support with 50+ applications
>>> Performance metrics, stats and reports that give you Actionable Insights
>>> Deep dive visibility with transaction tracing using APM
>>> Insight.http://ad.doubleclick.net/ddm/clk/290420510;117567292;y
>>>
>>>
>>>
>>> _______________________________________________
>>> Csound-users mailing
>>> listCsound-users@lists.sourceforge.nethttps://lists.sourceforge.net/lists/listinfo/csound-users
>>> Send bugs reports to
>>>          https://github.com/csound/csound/issues
>>> Discussions of bugs and features can be posted here
>>>
>>>
>>>
>>>
>>>
>>> ------------------------------------------------------------------------------
>>> One dashboard for servers and applications across Physical-Virtual-Cloud
>>> Widest out-of-the-box monitoring support with 50+ applications
>>> Performance metrics, stats and reports that give you Actionable Insights
>>> Deep dive visibility with transaction tracing using APM Insight.
>>> http://ad.doubleclick.net/ddm/clk/290420510;117567292;y
>>> _______________________________________________
>>> Csound-users mailing list
>>> Csound-users@lists.sourceforge.net
>>> https://lists.sourceforge.net/lists/listinfo/csound-users
>>> Send bugs reports to
>>>          https://github.com/csound/csound/issues
>>> Discussions of bugs and features can be posted here
>>>
>>>
>>>
>>>
>>>
>>> ------------------------------------------------------------------------------
>>> One dashboard for servers and applications across Physical-Virtual-Cloud
>>> Widest out-of-the-box monitoring support with 50+ applications
>>> Performance metrics, stats and reports that give you Actionable Insights
>>> Deep dive visibility with transaction tracing using APM Insight.
>>> http://ad.doubleclick.net/ddm/clk/290420510;117567292;y
>>>
>>>
>>>
>>> _______________________________________________
>>> Csound-users mailing list
>>> Csound-users@lists.sourceforge.net
>>> https://lists.sourceforge.net/lists/listinfo/csound-users
>>> Send bugs reports to
>>>          https://github.com/csound/csound/issues
>>> Discussions of bugs and features can be posted here
>>>
>>>
>>>
>>>
>>> ------------------------------------------------------------------------------
>>> One dashboard for servers and applications across Physical-Virtual-Cloud
>>> Widest out-of-the-box monitoring support with 50+ applications
>>> Performance metrics, stats and reports that give you Actionable Insights
>>> Deep dive visibility with transaction tracing using APM Insight.
>>> http://ad.doubleclick.net/ddm/clk/290420510;117567292;y
>>> _______________________________________________
>>> Csound-users mailing list
>>> Csound-users@lists.sourceforge.net
>>> https://lists.sourceforge.net/lists/listinfo/csound-users
>>> Send bugs reports to
>>>          https://github.com/csound/csound/issues
>>> Discussions of bugs and features can be posted here
>>>
>>
>> ------------------------------------------------------------------------------
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>> Widest out-of-the-box monitoring support with 50+ applications
>> Performance metrics, stats and reports that give you Actionable Insights
>> Deep dive visibility with transaction tracing using APM Insight.
>> http://ad.doubleclick.net/ddm/clk/290420510;117567292;y
>> _______________________________________________
>> Csound-users mailing list
>> Csound-users@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/csound-users
>> Send bugs reports to
>>          https://github.com/csound/csound/issues
>> Discussions of bugs and features can be posted here
>>
>
>


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