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Thread: audigy :(

  1. #1
    Banned
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    audigy :(

    this is from a winamp3 plugin.

    Version 1.1
    SBLive! resample bugfix component for Winamp3
    built by Pul

    Freeware component!

    USE THIS SOFTWARE AT YOUR OWN RISK !!!
    I will not be responsible for anything regarding the use of this software!

    If you are not looking for highest audio quality or have no idea about what
    distortion is, than this component is of no use for you ... it will only make
    your CPU work more on music

    but for those with SBLive! or Audigy series of soundcards and there are a lot more
    with this issue! this will give you the perfect sound you wanted to hear when
    you've bought that soundcard !!!

    [The SBLive! issue]

    SBLive! has a low quality resample to 48KHz algoritm (or multirate filter
    kernel too small...) maybe because to keep low latency to audio stream ...

    This is the SBLive! (and not only) problem:

    absolutely any audio stream is converted to 48KHz.
    the worst performance is 44.1KHz audio streams (cd audio).

    Audigy has the same issue except it resamples to 96000Hz but still
    kernel size too small so 1% IMD at 16KHz for Audigy2 (www.tomshardware.com)

    [The solution:]

    my high quality resample to 48KHz (or any >= 48000, that means 96000Hz too)
    component for Winamp3.

    Testing results:

    using SBLive! to resample to 48000:
    19KHz IMD=20%
    18KHz IMD=10%
    16KHz IMD=5%
    14KHz IMD=1%
    You don't believe me ...???? I've included in component pack generated tones
    used in my test versions of 44100Hz and 48000Hz ... Should sound the same !!!

    using my component for KernelLength=16000 samples:
    19KHz IMD=0.01%
    18KHz IMD=0.001%
    16KHz IMD=0%

    for now it works for .WAV and .MP3 files (because of a Winamp3 small documentation
    issue on ChunkLists ... see forums.winamp.com)

    CPU Load:
    <14% on Duron 825MHz for KernelSize 16000
    <5% on Duron 825MHz for KernelSize 6000
    <1% on AthlonXP2000+ for KernelSize 20000

    [How to Install:]

    make sure you've specified WACS folder on install: \...\winamp3\wacs\

    [known issues]
    might not work for some files, I wait for an official update on winamp forum
    about how to use chunklists
    until then please be satisfied with this version

    works on CDDA,WAV,MP3 streams for sure

    <TargetSampleRate> specifies resample target frequency of filter (should be
    48000 for SBLive! cards, 96000 for Audigy, and this must be the working
    Samplerate of the DSP on your soundcard!!!

    <KernelSize> is the multirate kernel filter length in samples of the lowpass
    filter. Here are some hints for 48000&96000:
    16000 samples for quality described above
    6000 samples are enough for 0.1% IMD @ 19KHz and no audible IMD
    (IMD is above 20khz and should be rejected by the hardware
    lowpass filter of your soundcard)
    altering this results:
    higher KernelSize => higher quality more CPU load.
    lower KernelSize => lower quality less CPU load.
    don't alter this if you do not know what means this or if you do not check
    the results on a spectrum analyzer!
    I've used as spectrum analyzer Goldwave 4.23 and CoolEdit2000 to measure
    IMD. To record result just loopback your soundcard output to Line-In and
    view the result over SpectrumAnalyzer in realtime.

    [Contact:]
    email: adi111p@yahoo.com


    P.S. Haven't you noticed that DVD movies (sampled to 48000Hz) sounded perfect
    on your sound system and Audio CD's didn't????? This is why!

  2. #2
    Banned
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    I never had any problems and find the audio quality very very good

  3. #3
    Ultimate Member AllGamer's Avatar
    Join Date
    Feb 2001
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    16,305
    he must have one of those bad ones from the first batches

    the new ones are works great

    i7-3970X, Corsair H80, 32GB G.SKILL, ASUS RAMPAGE4 Formula, VG278H(3x27")+3D Vision2, EVGA GTX 690(x2), OCZ ZX1250W, 256GB Vertex4(x2), Seagate 3TB(x5), Antec LanBoyAir, Logitech G510, G600, Z560THX, T.Flight Hotas, PZ35, Sennheiser PC163D, TrackIR5

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