Re: [LAD] on the soft synth midi jitters ...
On Thu, 2010-10-07 at 12:37 +0200, Jens M Andreasen wrote: On Thu, 2010-10-07 at 10:12 +1300, Jeff McClintock wrote: Cubase is particularly bad when playing a soft-synth live, esp with larger audio buffer sizes, because ... It could be useful to have some anecdotal evidence to quantify measures of jitter like annoying and drunk, so: What is your buffer-size? Oops, I need to read the latest received mails ASAP. Hm? Audible jitter for soft synth on any OS are very, very uncommon AND I'm really, really, annoying to Linux mailing lists regarding to MIDI jitter for external MIDI equipment. I don't have got a Microsoft OS installed on my machine anymore, but I never had any serious issue for any OS, regarding to soft synth. 1. Everybody should use Linux only, regarding to ethical reasons. 2. I prefer Linux, I've got issues using Linux, I don't like Windows, BUT never ever a licenced Windows + a bought Cubase will cause such an issue, assumed you didn't install a cracked Windows Office too. Pfff, is this a thread about cracked software for Microsoft computers on a Linux mailing list? *?* Ralf ___ Linux-audio-dev mailing list Linux-audio-dev@lists.linuxaudio.org http://lists.linuxaudio.org/listinfo/linux-audio-dev
Re: [LAD] jackd and usb hub
On Sat, Oct 9, 2010 at 2:55 AM, Geoff Beasley ge...@laughingboyrecords.com wrote: until Clemens chimes in... is it your own kernel Luis ? looks like usb2 device in usb1 port maybe? check your usb config in the kernel perhaps Hi, Geoff, thanks for answering. Clemens is perhaps the ultimate USB audio guru, but everyone else's experience in this issue is of course valuable and appreciated. I tried this on Ubuntu and Fedora Core stock kernels (no -rt patch). On Ubuntu jackd simply failed with no clue about was going on; Fedora's kernel at least supplied the message I quoted in the top message (probably it has activated some debugging flag that Ubuntu's doesn't.) If it helps some (probably not, since all the hubs in the market will be some kind of wrapper or another around the same Taiwanese chip), the hub model is Manhattan 160612: http://komputercenter.com/usb-gadgets-c-7/hub-usb-2-0-manhattan-160612-p-16 Has someone else here managed to successfully run jack over USB audio through an external hub? It is probably not the best setup out there latency-wise (how long does it actually take for a USB frame to pass across a hub, anyway?), but may be worth considering if low latency is not critical, providing in return integrated USB port protection and perhaps some degree of power supply noise isolation (or yet another noise source, you never know, but I'd hazard the guess that anything that separates audio equipment from LCD inverters in laptops should be a good thing.) Cheers, L ___ Linux-audio-dev mailing list Linux-audio-dev@lists.linuxaudio.org http://lists.linuxaudio.org/listinfo/linux-audio-dev
Re: [LAD] jackd and usb hub
On 10/09/10 11:40, Luis Garrido wrote: Has someone else here managed to successfully run jack over USB audio through an external hub? Hi Luis, I'm just trying this and it works. jackd at 48k*1024*3 produces occasional x-runs which it otherwise does not. Jackd even starts up with 48k*64*3 and runs a freeverb in-out with no x-run! 5mins at the time of writing this email. Laptop-USB - Hub (old USB1.1) - UA-25 #lsusb -t: /: Bus 04.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M |__ Port 1: Dev 8, If 0, Class=hub, Driver=hub/4p, 12M |__ Port 3: Dev 9, If 0, Class=vend., Driver=snd-usb-audio, 12M |__ Port 3: Dev 9, If 1, Class=vend., Driver=snd-usb-audio, 12M |__ Port 3: Dev 9, If 2, Class=vend., Driver=snd-usb-audio, 12M ... #uname -a Linux soyuz 2.6.33.7-rt29 #1 SMP PREEMPT RT Fri Sep 17 04:25:08 CEST 2010 i686 GNU/Linux #cat /etc/debian_version squeeze/sid #jackd --version jackdmp 1.9.6 on a 3 1/2 year old Thinkpad X60s. I had a PCMCIA USB2 card but I gave that away to a friend, sorry I can not test this at the moment. have a nice weekend, robin ___ Linux-audio-dev mailing list Linux-audio-dev@lists.linuxaudio.org http://lists.linuxaudio.org/listinfo/linux-audio-dev
