Re: [LAU] : Cracking sounds

2008/9/25 Pieter Palmers <pieterp@email-addr-hidden>

> Mysth-R wrote:
>
>>
>>
>> 2008/9/24 Pieter Palmers <pieterp@email-addr-hidden <mailto:pieterp@email-addr-hidden>>
>>
>> Mysth-R wrote:
>>
>>
>>
>> 2008/9/23 Pieter Palmers <pieterp@email-addr-hidden
>> <mailto:pieterp@email-addr-hidden> <mailto:pieterp@email-addr-hidden
>>
>> <mailto:pieterp@email-addr-hidden>>>
>>
>>
>> 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.
>

Yes I got a ricoh but I had too much issues with it. Now I use an
ExpressCard with firewire extension, and it has a Texas Instrument chip (see
the two last line of the lspci result).
Perhpas due to a rate transfer of the Express Card ....

>
> Also, for me the pd patch crackles without doing anything, but then again I
> don't know how to use pd properly.
>

You can try to run pd with :

$ pd -rt -jack -alsamidi

>
>
> 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@email-addr-hidden ~ $ 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@email-addr-hidden ~ $
>>
>>
>> #########################################################
>> 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.
>> *
>> ***************************************************************************************
>>
>
>

-- 
*
***************************************************************************************
*  {^_^} 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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Received on Sat Sep 27 16:15:01 2008