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Thread: EMU 0404 USB new thread

  1. #21
    Join Date
    Jun 2008
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    10

    Re: EMU 0404 USB new thread

    klss, thank you for your script. I have tried both scripts and both versions of alsa on fresh installs of hardy and intrepid.

    In /etc/modprobe.d/alsa-base, I set
    options snd-usb-audio index=0
    options snd-hda-intel index=1

    I do not think this has anything to do with my problem.

    In every case, when system/preferences/sound is set to ALSA, my emu 0404 usb sounds very distorted.

    But when system/preferences/sound is set to Autodetect/OSS/PulseAudio, my emu 0404 usb sounds OK.

    Please, help me k l s kenobi; you're my only hope. Why does my emu 0404 usb sound distorted with ALSA?

  2. #22
    Join Date
    Jan 2007
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    Distro
    Ubuntu Jaunty Jackalope (testing)

    Re: EMU 0404 USB new thread

    Most probably a sample rate issue.

    Did you upgrade the firmware via Windows? Otherwise it runs 48khz by default.

    Some applications like Amarok do output/resample to 48khz.

    Could be that your Pulse runs 48khz.

    Pulse streams also via Alsa. It shouldn't be Alsa causing your issues.

    Run following command while playing back, assumung the EMU is the 1st soundcard.

    $ cat /proc/asound/card0/stream0

    The first couple of lines in the output should look like this:

    Playback:
    Status: Running
    Interface = 1
    Altset = 1
    URBs = 8 [ 1 1 1 1 1 1 1 1 ]
    Packet Size = 274
    Momentary freq = 44098 Hz (0x5.8320)
    Interface 1


    This way you can checkout what samplerate you are actually running, while playing back.


    Note: Modify your alsa-base file for better sound to :

    options snd-usb-audio index=0 nrpacks=1



    Good luck.
    Last edited by klss; October 8th, 2008 at 07:08 PM.

  3. #23
    Join Date
    Jan 2007
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    41
    Distro
    Ubuntu Jaunty Jackalope (testing)

    Re: EMU 0404 USB new thread

    Hi folks.

    Another hint :

    Since you're all able to install the Alsa driver manually, I recommend to
    tweak the usbaudio driver a bit.

    If you use my Alsa download and installation script you need to edit following file (use the download only option first):

    $ sudo gedit /usr/src/Alsa-1.0.18rc3/alsa-driver-1.0.18rc3/sound/usb/usbaudio.c

    Find following section (line 1922)
    ---------------------
    snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_TIME,
    1000 * MIN_PACKS_URB,
    /*(nrpacks * MAX_URBS) * 1000*/ UINT_MAX);

    -------------------------
    change it to
    -------------------------
    snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_TIME,
    125 * MIN_PACKS_URB,
    /*(nrpacks * MAX_URBS) * 1000*/ UINT_MAX);


    ---------------------
    and save it.


    Now run my script again and install Alsa.

    Let me know what you think!

    Cheers
    Last edited by klss; October 9th, 2008 at 03:40 PM.

  4. #24
    Join Date
    Oct 2008
    Beans
    2

    Re: EMU 0404 USB new thread

    I have a E-mu 0404 PCI card and consider to install Ubuntu on that computer, does anybody know if the PCI version is supported?
    And if it is, does anybody know about anything similar to E-mu's "PatchMix DSP" program that allow you to set up different sound effect chains for every port of the card?
    I usually play internet radio streams through another ubuntu system with an old and noisy soundblaster card, and have set up PatchMix on my XP machine to run a compressor, leveler and noise gate on the input from that computer.

  5. #25
    Join Date
    Jan 2007
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    Distro
    Ubuntu Jaunty Jackalope (testing)

    Re: EMU 0404 USB new thread

    Hi.

    Checkout this http://www.alsa-project.org/main/ind...Module-emu10k1

    Your card is supported.

    Good luck
    --------------------------------------------------------
    Ubuntu - Alsa 1.0.x Installation Script

  6. #26
    Join Date
    Feb 2008
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    157
    Distro
    Ubuntu Development Release

    Re: EMU 0404 USB new thread

    Any news about USB 0404?

    Mine works out of the box in intrepid, but only in 16bit and output only
    My PC
    Ubuntu user from 18.2.2008
    Oh, my studio and my band

  7. #27
    Join Date
    Jul 2007
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    DUS
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    Re: EMU 0404 USB new thread

    Quote Originally Posted by uhappo View Post
    Any news about USB 0404?

    Mine works out of the box in intrepid, but only in 16bit and output only
    Nobody is working on it over there at ALSA.
    It needs a week of work to get it going according to the devlopper.

    I don't get the specs by myself. Otherwise I would have started to look into it already.

  8. #28
    Join Date
    Nov 2008
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    Re: EMU 0404 USB new thread

    Just wanted to add to the list of (partial) successes... audio output works on new install of Intrepid (8.10), no modifications necessary. 44.1khz, 16 bit.

  9. #29
    Join Date
    Feb 2008
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    Distro
    Ubuntu Development Release

    Re: EMU 0404 USB new thread

    So whats this?

    SCOTTS VALLEY, CA - December 1, 2008 - E-MU Systems today announced that for the first time it will release as open source the Macintosh driver stack for its award winning USB 2.0 audio interface products - the 0202USB, 0404USB, and TrackerPre. The Software Developer Kit will be available on the SourceForge developer’s website in early December and can be found at:https://sourceforge.net/projects/zaudiodrivermac/. The software will be released under the GNU Lesser General Public License or LGPL v3, which enables developers to commercially redistribute products derived from this code base.

    The Software Developer Kit will include the E-MU USB 2.0 driver interface specification and necessary source code for adding new features, enhancing performance, or porting to other Operating Systems.

    "We are releasing this code to the public to enable programming enthusiasts the ability to experiment with and to extend the capabilities of our products, which we find being used in a variety of applications outside of the MI space proper. I'm convinced that our clever user base will come up with innovative variations not addressed by our mainstream activities," said Michael Lee, marketing manager for E-MU Systems. "I'm excited to see the results generated by the OpenSource community."
    My PC
    Ubuntu user from 18.2.2008
    Oh, my studio and my band

  10. #30
    Join Date
    Jul 2007
    Location
    DUS
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    183

    Re: EMU 0404 USB new thread

    Sounds cool. Probably they're gonna phase out the 0404/0202.

    We should let the ALSA folks know. Where did you find it?

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