AHI Unit 0 sound quality problems
  • Order of the Butterfly
    Order of the Butterfly
    GK_LKA
    Posts: 481 from 2004/3/28
    From: Hungary
    Ave people!

    I've just switched back to "Pegasos: Hifi 16 bit Stereo++" mode from "Unit 0: 16 bit Stereo++" - and I've noticed [B]a lot[/B] of sound quality improving. So the question is, what is the problem? Does the Unit 0 give such a bad sound quality at others too? Or have I misconfigured something? :)

    Can I listen multiple sounds at one time using this device (like 2 SongPlayers, 2 MPlayers, etc.)?

    I have pegasos.audio 4.13 (28.10.04), ahi.device 5.54 (03/29/2005) and the Pegasos II's onboard AC97 sound chip.
    [ GK / LKA Team ]
  • »25.04.05 - 00:13
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  • Paladin of the Pegasos
    Paladin of the Pegasos
    Acill
    Posts: 1926 from 2003/10/19
    From: Port Hueneme, Ca.
    If you get the driver working with multiple apps then chances are you have it installed just fine. I use it with the EMU10K driver for the Soundblaster Live cards. I do notice the sound is a low lower. I have to increase the volume to get the levels the same as before I started using it. I am not sure if its the version of AHI or the unit 0 part though. Its done it for the last two versions now as well.
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  • »25.04.05 - 08:51
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  • Paladin of the Pegasos
    Paladin of the Pegasos
    ThePlayer
    Posts: 1069 from 2003/3/24
    From: Hamburg/Germany
    I have same quality with Unit0 as with HiFi16 Bit Stereo++. And i can open mulitple Mplayers, ANR, Songplayer, and the play at same time without problems. And you should get AHI6.0 RC3
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  • »25.04.05 - 09:59
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  • Order of the Butterfly
    Order of the Butterfly
    GK_LKA
    Posts: 481 from 2004/3/28
    From: Hungary
    I've upgraded to AHI6.0 RC3 (ahi.device 6.2 (04/03/2005)). I've tried it, but there is the same effect. If I select the "Unit 0" on the first page of AHI prefs, the sound quality gets worse. There is a little "ambient noise" (I can hear it with SongPlayer at high volumes, but MPlayer is much worse: frequently I can't hear the movie's own sound from the noise. ). If I set "Pegasos: Hifi 16bit Stereo++" mode, then everything is fine, thre is no noise, but the system freezes, if I want to use AHI in two programs at the same time.

    (If I set Volume Scaling in AHI prefs other than "Full volume", the sound is too low even at full volume on my amplifier.)
    [ GK / LKA Team ]
  • »25.04.05 - 15:25
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  • Acolyte of the Butterfly
    Acolyte of the Butterfly
    mahen
    Posts: 118 from 2003/2/24
    From: France (Rennes)
    and what are your settings for Unit 0 ?
    xmpp:mahen on jabber.fr
  • »25.04.05 - 16:53
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  • Order of the Butterfly
    Order of the Butterfly
    GK_LKA
    Posts: 481 from 2004/3/28
    From: Hungary
    25-Apr-05_001.png

    Are they OK?
    [ GK / LKA Team ]
  • »25.04.05 - 17:46
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  • Order of the Butterfly
    Order of the Butterfly
    roschmyr
    Posts: 207 from 2003/2/20
    From: Oberhausen/Ger...
    @GK_LKA
    i've the same settings, except Frequency, there i've 48000Hz
    and i can use Songplayer,AmiNetRadio and Frogger.. at the same time
    with onboard sound
  • »25.04.05 - 19:22
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  • Order of the Butterfly
    Order of the Butterfly
    GK_LKA
    Posts: 481 from 2004/3/28
    From: Hungary
    Thanks, but you don't understand me. My problem is, that it have choice: good sound quality and one program at the same time, or bad quality and more programs.

    I just want to know, that in the second case does everyone hear the noise or is it only my fault?
    [ GK / LKA Team ]
  • »26.04.05 - 07:36
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  • jah
  • Butterfly
    Butterfly
    jah
    Posts: 69 from 2003/3/24
    into the "music unit" list, the "unit 0 hifi.." mode is a fake mode :
    it use the settings from "unit 0" list (second item into the cycle
    button)
    check that your unit 0 settings have a good modeid and enough channels


    ahisrc-6.0rc3/ChangeLog line 371
    * Added a new driver, device.audio, that plays sound using one of
    AHI's units. And there was much rejoicing.
  • »26.04.05 - 14:01
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  • Paladin of the Pegasos
    Paladin of the Pegasos
    Acill
    Posts: 1926 from 2003/10/19
    From: Port Hueneme, Ca.
    I dont hear any noise on mine, its just got a lower volume then the standard one is all.
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  • »26.04.05 - 15:08
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  • Order of the Butterfly
    Order of the Butterfly
    GK_LKA
    Posts: 481 from 2004/3/28
    From: Hungary
    @jah:

    Thanks for answering!

    I've found the reason of the strange noise: The more channels I set in the Unit 0 settings, the lower will be the sound quality. So I've set it to 3, and now everything goes fine. Thanks again!
    [ GK / LKA Team ]
  • »27.04.05 - 12:02
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