[LAU] : Cracking sounds
Pieter Palmers
pieterp at joow.be
Thu Sep 25 06:02:50 EDT 2008
Mysth-R wrote:
>
>
> 2008/9/24 Pieter Palmers <pieterp at joow.be <mailto:pieterp at joow.be>>
>
> Mysth-R wrote:
>
>
>
> 2008/9/23 Pieter Palmers <pieterp at joow.be
> <mailto:pieterp at joow.be> <mailto:pieterp at joow.be
> <mailto:pieterp at joow.be>>>
>
>
> Mysth-R wrote:
>
> Hi,
>
> I've got a strange behaviour with my midi controller and/or
> freebob/ffado.
> I made a pure data patch, with a midi learn function. So
> I can
> control everything with my midi controller.
> When I use jack with Freebob or ffado (I tested both) and a
> Presonus Firebox, I got cracking sounds every time I move
> faders, pots from my Midi Controler.
> When I use jack with alsa and a poor usb berhinger UCA202 it
> works perfectly : no cracking sounds
>
>
> Is your midi controller attached to the Presonus box or is it
> a USB
> midi controller?
>
>
> I tried with USB and directly attached to the Presonus. My
> controller is a Korg microKontrol, but I tried with another
> controller too (an EMU I think)
> I also tried with Jackd and Jackdmp , cause I am on Gentoo 64bits.
>
>
> Strange...
>
>
>
>
> What settings do you use for jackd?
>
>
> My settings are :
>
> /usr/bin/jackd -R -dfirewire -r48000 -p256 -n3
>
> does it happen with higher buffer sizes too?
>
> try increasing the priority of jackd to 65:
> /usr/bin/jackd -R -P65 -dfirewire -r48000 -p256 -n3
>
> I suspect that it has something to do with the kernel layer since
> it's present in both freebob and ffado.
>
>
> Ok I have made some tests
>
> First test :
> priority : 65
> frame/period : 4096
> Test OK !! :)
>
> Second test :
> Priority : 65
> Frame/period : 512
> It cracks !
>
> Last test :
> Priority : 65
> Frame / period : 1024
> Test OK !!
>
> A friend of mine just tell me that my pd patch works find with his
> config, and freebob : no cracks !
> What, in your mind, could be the problem ? software ? hardware ?
You seem to be running a Ricoh 1394 chipset, that can be a problem. I
think you're experiencing a hardware issue.
Also, for me the pd patch crackles without doing anything, but then
again I don't know how to use pd properly.
Greets,
Pieter
>
> on my gentoo I have compiled my own kernel (2.6.25.4-rt5). But on the
> open suse I took the one from Jacklab (2.6.22.13 <http://2.6.22.13>)
>
>
> #################################################
> Some more infos :
> 1- lspci
> 2- cat /proc/interrupts
> 3- rtirq
> 4- limit.conf
>
>
> ###############################################"
> 1- lspci :
>
> mysthr2 at localhost ~ $ sudo lspci
> 00:00.0 Host bridge: Intel Corporation Mobile 945GM/PM/GMS, 943/940GML
> and 945GT Express Memory Controller Hub (rev 03)
> 00:01.0 PCI bridge: Intel Corporation Mobile 945GM/PM/GMS, 943/940GML
> and 945GT Express PCI Express Root Port (rev 03)
> 00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High
> Definition Audio Controller (rev 01)
> 00:1c.0 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express
> Port 1 (rev 01)
> 00:1c.1 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express
> Port 2 (rev 01)
> 00:1c.3 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express
> Port 4 (rev 01)
> 00:1d.0 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI
> Controller #1 (rev 01)
> 00:1d.1 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI
> Controller #2 (rev 01)
> 00:1d.2 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI
> Controller #3 (rev 01)
> 00:1d.3 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI
> Controller #4 (rev 01)
> 00:1d.7 USB Controller: Intel Corporation 82801G (ICH7 Family) USB2 EHCI
> Controller (rev 01)
> 00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev e1)
> 00:1f.0 ISA bridge: Intel Corporation 82801GBM (ICH7-M) LPC Interface
> Bridge (rev 01)
> 00:1f.2 IDE interface: Intel Corporation 82801GBM/GHM (ICH7 Family) SATA
> IDE Controller (rev 01)
> 00:1f.3 SMBus: Intel Corporation 82801G (ICH7 Family) SMBus Controller
> (rev 01)
> 01:00.0 VGA compatible controller: nVidia Corporation GeForce Go 7900 GS
> (rev a1)
> 03:00.0 Ethernet controller: Broadcom Corporation BCM4401-B0 100Base-TX
> (rev 02)
> 03:01.0 FireWire (IEEE 1394): Ricoh Co Ltd R5C832 IEEE 1394 Controller
> 03:01.1 SD Host controller: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro
> Host Adapter (rev 19)
> 03:01.2 System peripheral: Ricoh Co Ltd Device 0843 (rev 01)
> 03:01.3 System peripheral: Ricoh Co Ltd R5C592 Memory Stick Bus Host
> Adapter (rev 0a)
> 03:01.4 System peripheral: Ricoh Co Ltd xD-Picture Card Controller (rev 05)
> 0c:00.0 Network controller: Intel Corporation PRO/Wireless 3945ABG
> Network Connection (rev 02)
> 0d:00.0 PCI bridge: Texas Instruments XIO2000(A)/XIO2200(A) PCI
> Express-to-PCI Bridge (rev 03)
> 0e:00.0 FireWire (IEEE 1394): Texas Instruments XIO2200(A)
> IEEE-1394a-2000 Controller (PHY/Link) (rev 01)
> mysthr2 at localhost ~ $
>
>
> #########################################################
> 2- cat /proc/interrupts
>
> CPU0 CPU1
> 0: 1558526 0 IO-APIC-edge timer
> 1: 1313 0 IO-APIC-edge i8042
> 8: 1 0 IO-APIC-edge rtc
> 9: 2 0 IO-APIC-fasteoi acpi
> 12: 123 0 IO-APIC-edge i8042
> 14: 11715 0 IO-APIC-edge ata_piix
> 15: 97 0 IO-APIC-edge ata_piix
> 16: 48553 0 IO-APIC-fasteoi nvidia
> 17: 1495 0 IO-APIC-fasteoi eth0
> 19: 83 0 IO-APIC-fasteoi ohci1394, ohci1394
> 20: 6296 0 IO-APIC-fasteoi ehci_hcd:usb1, uhci_hcd:usb2
> 21: 106 0 IO-APIC-fasteoi uhci_hcd:usb3, HDA Intel
> 22: 92 0 IO-APIC-fasteoi uhci_hcd:usb4
> 23: 0 0 IO-APIC-fasteoi uhci_hcd:usb5
> NMI: 0 0 Non-maskable interrupts
> LOC: 39497 1450011 Local timer interrupts
> RES: 35829 46345 Rescheduling interrupts
> CAL: 38 43 function call interrupts
> TLB: 259 469 TLB shootdowns
> TRM: 0 0 Thermal event interrupts
> THR: 0 0 Threshold APIC interrupts
> SPU: 0 0 Spurious interrupts
> ERR: 0
>
> ##################################################
>
> 3- rtirq :
>
> #!/bin/sh
> #
> # Copyright (c) 2004-2007 rncbc aka Rui Nuno Capela.
> #
> # /etc/conf.d/rtirq
> #
> # Configuration for IRQ thread tunning,
> # for realtime-preempt enabled kernels.
> #
> # This program is free software; you can redistribute it and/or modify it
> # under the terms of the GNU General Public License version 2 or later.
> #
>
> # IRQ thread service names
> # (space separated list, from higher to lower priority).
> RTIRQ_NAME_LIST="rtc ohci1394 i8042"
>
> # Highest priority.
> RTIRQ_PRIO_HIGH=99
>
> # Priority decrease step.
> RTIRQ_PRIO_DECR=10
>
> # Whether to reset all IRQ threads to SCHED_OTHER.
> RTIRQ_RESET_ALL=0
>
> # On kernel configurations that support it,
> # which services should be NOT threaded
> # (space separated list).
> RTIRQ_NON_THREADED="rtc ohci1394"
>
> # Process names which will be forced to the
> # highest realtime priority range (99-91)
> # (space separated list, from highest to lower priority).
> # RTIRQ_HIGH_LIST="softirq-timer"
>
>
> #############################################################"
> 4- limits.conf
>
> @audio - rtprio 99
> @audio - nice -10
> @audio - memlock 1774000
>
>
> ###########################################################
>
> That's all !! :)
> Cheers,
>
> Mysth-R
>
> --
> *
> ***************************************************************************************
> * {^_^} Mysth-R {^_^}
> * <= Aide Auditive =>
> *
> * http://myspace.com/mysthr
> * http://myspace.com/aideauditive
> * http://mysthr.free.fr/Joomla => Site dédié à l'audio sous
> Fedora/PlanetCCRMA.
> *
> ***************************************************************************************
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