22 May
2013
22 May
'13
2:37 a.m.
Hi,
I've not been active here for quite some time. So, I've tried something
simple to get my toe back in, as I need to distribute MIDI files to some
musician colleagues.
So, I've wired an old Yamaha 49-key keyboard into Fluidsynth using a
Textech MIDI to USB cable, and provided the aconnect command.
I have sound, but it's about 300 ms latent--effectively unusable.
Fluid synth did complain: "Failed to pin the sample data to RAM." Could
that possibly explain this much latency?
I'm loading Fluidsynth for alsa_seq because I don't believe I need the
complexity of jack just yet. But, might jack do better?
Any suggestions most appreciated.
Janina
Len Ovens writes:
On Tue, May 21, 2013 11:31 am, Robin Gareus wrote:
figure out hot to change the input mode for the channels 1-2 from MIC
to LINE/instr!
for the
18i6. According to Focusrite the same will also work for the 8i6
-- but I lost interest in Focusrite devices for various reasons.
--
Janina Sajka, Phone: +1.443.300.2200
sip:janina@asterisk.rednote.net
Email: janina(a)rednote.net
Linux Foundation Fellow
Executive Chair, Accessibility Workgroup: http://a11y.org
The World Wide Web Consortium (W3C), Web Accessibility Initiative (WAI)
Chair, Protocols & Formats http://www.w3.org/wai/pf
Indie UI http://www.w3.org/WAI/IndieUI/
[message re-arrange to avoid top-posting]
On 05/21/2013 04:52 PM, Axax wrote:
> On 05/21/2013 09:30 AM, Abhayadev S wrote:
>> Hi,
>>
>> Anybody had tried using the Focusrite Scarllet 8i6 on Ubuntu Studio
13.04?
>>
>> So far it was not supported under ALSA but from 13.04 it seems it is
been
detected and the JACK is able to list out couple of I/Os.
>>
>> Last day i just booted up a live version of the 13.04 and was bale to
do
couple of i/o routing. Jack lists 8 inputs and 12 outputs. It seems
the Inputs 1 to 4 (analog mic/line-ins) are listed as Inpiuts 1 to 4
and 2 SPDIF are 5 and 6. But i am not sure about the 7 and 8. I am
getting the same SPDIF signal on these inputs too !
>> The output 1 to 4 are Monitors output
(1&2) and extra outputs (3&4) on
the backside of the box. And 5&6 seems
to be SPDIF outputs. Still have
6 more outputs to be listed/clarified.
>>
>> Just going ahead with further analysis and if anybody out there has
any
thing to add on please do so..
>
> Regards,
> Abhayadev S
> http://sites.google.com/site/abhayadevs
> http://sites.google.com/site/astudioindia
>
> Hi,
>
> I've the same audio card. It's working as you described, but I can't
> Anybody have a clue?
Just a quick addition. The below describes how to change the
line/instrument inputs back and forth. Mic to line is automatic. If you
plug into the XLR it is mic mode and into the 1/4inch TRS (or TS) it is
line/instrument mode.
A.
see
https://focusritedevelopmentteam.wordpress.com/2012/04/23/linux-and-focusri…
https://github.com/x42/alsa-driver/tree/s18i6 adds full mixer support
Short of patching the alsa kernel driver or using another OS to change
device
config, you can use https://github.com/x42/scarlettmixer to
change the config on GNU/Linux. It's not a ready-to-use app, however:
1) rmmod snd_usb_audio # so that python script can access the device 2)
change
the python script line 31 to detect the 8i6
3) tweak the "example code" line 492..
the "line/inst" switch is there as sw_impedance()
4) modprobe snd_usb_audio # ...
best,
robin
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--
Len Ovens
www.OvenWerks.net
--
Len Ovens
www.OvenWerks.net
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