<div dir="ltr">Hey all,<div><br></div><div>I have a HDA ( cat /proc/interrupts tells me so anyway: snd_hda_intel ).</div><div>Its my built-in laptop soundcard, and it works pretty well, down to about 44.1kHz, -p128 -n3. That's ~8ms, which is acceptable IMO.</div><div><br></div><div>I've read on mailing list / internet somewhere* that spec for the HDA is pretty open-to-interpretation, so I think the exact hardware / chipset would need to be tested to get true results.</div><div><br></div><div>-Harry</div><div><br></div><div>*and lost the link..</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Oct 21, 2014 at 11:14 AM, Patrick Shirkey <span dir="ltr"><<a href="mailto:pshirkey@boosthardware.com" target="_blank">pshirkey@boosthardware.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="HOEnZb"><div class="h5"><br>
On Tue, October 21, 2014 8:41 pm, Carlos sanchiavedraz wrote:<br>
> 2014-10-21 11:37 GMT+02:00 Patrick Shirkey <<a href="mailto:pshirkey@boosthardware.com">pshirkey@boosthardware.com</a>>:<br>
><br>
>><br>
>> On Tue, October 21, 2014 8:27 pm, Carlos sanchiavedraz wrote:<br>
>> > 2014-10-20 17:10 GMT+02:00 Patrick Shirkey<br>
>> <<a href="mailto:pshirkey@boosthardware.com">pshirkey@boosthardware.com</a>>:<br>
>> ><br>
>> >><br>
>> >> On Mon, October 20, 2014 10:59 pm, Jeremy Jongepier wrote:<br>
>> >> > On 10/20/2014 11:34 AM, Atte wrote:<br>
>> >> >> Dunno about jack, but it seems interesting! However I can't seem<br>
>> to<br>
>> >> find<br>
>> >> >> any prices...<br>
>> >> ><br>
>> >> > These devices are fairly cheap starting from about $50:<br>
>> >> ><br>
>> >><br>
>> <a href="http://www.dx.com/p/ditter-u20-dual-core-android-4-2-google-tv-hd-player-w-1gb-ram-4gb-rom-hdmi-black-300969#.VET43IXSWAs" target="_blank">http://www.dx.com/p/ditter-u20-dual-core-android-4-2-google-tv-hd-player-w-1gb-ram-4gb-rom-hdmi-black-300969#.VET43IXSWAs</a><br>
>> >> ><br>
>> >><br>
>> >> If you want something that is relatively cheap that can run pianoteq,<br>
>> >> linuxsampler, etc... then you should look into the Intel NUC range.<br>
>> >><br>
>> >> They provide a very nice piece of gear for a stand alone solution and<br>
>> >> decent responsive support via the OTC forums. I requested a change to<br>
>> >> the<br>
>> >> BIOS and they did it for me as an update.<br>
>> >><br>
>> >> I have had one for several months as a head for my home entertainment<br>
>> >> center and it is working very well. Yesterday I did some edits with<br>
>> >> ardour2. All I had to do was "apt-get install ardour".<br>
>> >><br>
>> >> It's not $50 but it is less than $300 for a complete 64 bit x86<br>
>> solution<br>
>> >> including RAM/HDD/SSD. The case is brushed aluminium and it is very<br>
>> >> robust. If you get an SSD it is nearly 100% solid state apart from<br>
>> the<br>
>> >> CPU<br>
>> >> fan which is almost noiseless.<br>
>> >><br>
>> >> My (cheap) home stereo speaker system generates more noise than the<br>
>> fan<br>
>> >> and I have it running 24/7 for net streaming to TV with full 1080p<br>
>> over<br>
>> >> hdmi.<br>
>> >><br>
>> >> Saves all the hassle of learning how to cross compile and the general<br>
>> >> issues associated with developing for ARM.<br>
>> >><br>
>> >> I tried several other options before settling on this one. They were<br>
>> >> cheaper but also more frustrating.<br>
>> >><br>
>> >> Intel are catching up on ARM these days with the 16/14/12nm fab<br>
>> process.<br>
>> >><br>
>> >> > That's one of the cheapest I could find with an Allwinner A20<br>
>> chipset.<br>
>> >> > Better would be to get something like a Cubieboard.<br>
>> >> ><br>
>> >><br>
>> >> --<br>
>> >> Patrick Shirkey<br>
>> >> Boost Hardware Ltd<br>
>> >> _______________________________________________<br>
>> >> Linux-audio-user mailing list<br>
>> >> <a href="mailto:Linux-audio-user@lists.linuxaudio.org">Linux-audio-user@lists.linuxaudio.org</a><br>
>> >> <a href="http://lists.linuxaudio.org/listinfo/linux-audio-user" target="_blank">http://lists.linuxaudio.org/listinfo/linux-audio-user</a><br>
>> >><br>
>> ><br>
>> > That about Intel NUC range sounds really interesting. Which device do<br>
>> you<br>
>> > have, Patrick? I guess the possibilities are one of these:<br>
>> > <a href="http://techpartner.intel.com/campaigns/nuc/" target="_blank">http://techpartner.intel.com/campaigns/nuc/</a><br>
>> ><br>
>><br>
>> I got the cheapest one at the time which was the DNY2820FKH. It has a<br>
>> dual<br>
>> core celeron and 4GB RAM. I think it can take up to 16GB.<br>
>><br>
>> > Apart from running Ardour, what about RT and IRQs and that stuff?<br>
>> > Thanks Patrick.<br>
>> ><br>
>><br>
>> The rt config is in place but I haven't really pushed it for audio<br>
>> generation yet. It runs electricsheep and full 1080p video/audio without<br>
>> any issues. I can get about 30fps with 1080p which is decent for viewing<br>
>> but not fast enough for competitive playing.<br>
>><br>
>> Here is cat /proc/interrupts<br>
>> CPU0 CPU1<br>
>> 0: 26 0 IO-APIC-edge timer<br>
>> 1: 2 0 IO-APIC-edge i8042<br>
>> 8: 1 0 IO-APIC-fasteoi rtc0<br>
>> 9: 0 0 IO-APIC-fasteoi acpi<br>
>> 10: 10801372 0 IO-APIC-edge ite-cir<br>
>> 12: 4 0 IO-APIC-edge i8042<br>
>> 103: 1018511 0 PCI-MSI-edge xhci_hcd<br>
>> 104: 7418719 0 PCI-MSI-edge ahci<br>
>> 105: 113014233 0 PCI-MSI-edge eth0<br>
>> 106: 216595760 0 PCI-MSI-edge i915<br>
>> 107: 373 1604714 PCI-MSI-edge iwlwifi<br>
>> 108: 1368299 0 PCI-MSI-edge snd_hda_intel<br>
>> NMI: 48085 47493 Non-maskable interrupts<br>
>> LOC: 383351941 317871495 Local timer interrupts<br>
>> SPU: 0 0 Spurious interrupts<br>
>> PMI: 48085 47493 Performance monitoring interrupts<br>
>> IWI: 4051038 6083943 IRQ work interrupts<br>
>> RTR: 0 0 APIC ICR read retries<br>
>> RES: 69587463 71022804 Rescheduling interrupts<br>
>> CAL: 427 487 Function call interrupts<br>
>> TLB: 1192097 1158476 TLB shootdowns<br>
>> TRM: 0 0 Thermal event interrupts<br>
>> THR: 0 0 Threshold APIC interrupts<br>
>> MCE: 0 0 Machine check exceptions<br>
>> MCP: 2904 2904 Machine check polls<br>
>> ERR: 0<br>
>> MIS: 0<br>
>><br>
>><br>
>><br>
>><br>
>><br>
>><br>
>> --<br>
>> Patrick Shirkey<br>
>> Boost Hardware Ltd<br>
>> _______________________________________________<br>
>> Linux-audio-user mailing list<br>
>> <a href="mailto:Linux-audio-user@lists.linuxaudio.org">Linux-audio-user@lists.linuxaudio.org</a><br>
>> <a href="http://lists.linuxaudio.org/listinfo/linux-audio-user" target="_blank">http://lists.linuxaudio.org/listinfo/linux-audio-user</a><br>
>><br>
><br>
> Thanks!<br>
><br>
> It'll be great if it runs Debian/Musix and if it could be configured for<br>
> RT<br>
> audio.<br>
><br>
<br>
</div></div>I have installed Debian but there were issues with the wifi chipset so I<br>
switched to ubuntu which has better support for wifi ootb. Simply because<br>
I didn't want to spend any more time on wifi issues at that point having<br>
just ditched a rockchip device with similar problems. Now I don't use wifi<br>
so I could switch back to debian but seeing as everything is already setup<br>
there is not much motivation.<br>
<br>
The realtime config is in place when I installed jack/ardour2. I have not<br>
tested the actual best case latency with jack yet. It works fine with -p<br>
1024 -r48000 -n2. Maybe someone else has latency details on the audio<br>
chipset with other systems? (snd-hda-intel)<br>
<br>
I'll try to run some tests when my daughter is not watching teletubbies.<br>
<div class="HOEnZb"><div class="h5"><br>
<br>
--<br>
Patrick Shirkey<br>
Boost Hardware Ltd<br>
_______________________________________________<br>
Linux-audio-user mailing list<br>
<a href="mailto:Linux-audio-user@lists.linuxaudio.org">Linux-audio-user@lists.linuxaudio.org</a><br>
<a href="http://lists.linuxaudio.org/listinfo/linux-audio-user" target="_blank">http://lists.linuxaudio.org/listinfo/linux-audio-user</a><br>
</div></div></blockquote></div><br><br clear="all"><div><br></div>-- <br><br><a href="http://www.openavproductions.com" target="_blank">http://www.openavproductions.com</a>
</div>