Professional Web Applications Themes

Audio is about 12% (whole step) too fast - Linux Setup, Configuration & Administration

Topher Cawlfield <cawlfieluiuc.edu> wrote: > Hi, > > I'm trying to track down the source of an audio playback problem on my > laptop. I have various .ogg and .mp3 files, and they all seem to be a > little high-pitched and fast. I recently compared a .ogg file to the > original played directly off the CD, and found that the .ogg > reproduction was about a whole step too high, which corresponds to > roughly 12% too fast (+/- a few percent, I could time a song for more [...] > I'm running Mandrake Linux 9.1 on a ...

  1. #1

    Default Re: Audio is about 12% (whole step) too fast

    Topher Cawlfield <cawlfieluiuc.edu> wrote:
    > Hi,
    >
    > I'm trying to track down the source of an audio playback problem on my
    > laptop. I have various .ogg and .mp3 files, and they all seem to be a
    > little high-pitched and fast. I recently compared a .ogg file to the
    > original played directly off the CD, and found that the .ogg
    > reproduction was about a whole step too high, which corresponds to
    > roughly 12% too fast (+/- a few percent, I could time a song for more
    [...]
    > I'm running Mandrake Linux 9.1 on a Dell Inspiron 8200. I'm using ALSA
    > version 0.9.0rc8, with the snd-intel8x0 module. It sounds fine, except
    > for the speed.
    it seems you have the wrong sample rate. common sample rates for sound
    cards are 44.1 KHz and 48KHz. i don't know how to set them in alsa but i
    am pretty sure that could be the problem.


    hth, armin

    --

    life, the universe and everything
    [url]http://www.dtch.org[/url]

    armin walland Guest

  2. #2

    Default Re: Audio is about 12% (whole step) too fast

    Thanks, that's a good explanation.

    I took a look through the driver source code, and see 48000 hardcoded
    everywhere but no 44100. Then I saw some code to print the clock speed
    to the log...

    # grep intel8 /var/log/kernel/info
    Jul 28 10:08:24 Tophtop kernel: intel8x0: clocking to 50266
    Jul 28 13:33:03 Tophtop kernel: intel8x0: clocking to 48000
    Jul 28 13:58:48 Tophtop kernel: intel8x0: clocking to 48000
    Jul 29 07:56:12 Tophtop kernel: intel8x0: clocking to 50266
    Jul 30 10:35:08 Tophtop kernel: intel8x0: clocking to 50266

    Two things are strange here. One is that it's not reporting 44.1 kHz
    (which would be in error), and the other is that it's fluctuating each
    time I boot!

    Well, this points me in the right direction anyway. I think I need to
    write to the alsa mailing list.

    - Topher

    armin walland wrote:
    > Topher Cawlfield <cawlfieluiuc.edu> wrote:
    >
    >>Hi,
    >>
    >>I'm trying to track down the source of an audio playback problem on my
    >>laptop. I have various .ogg and .mp3 files, and they all seem to be a
    >>little high-pitched and fast. I recently compared a .ogg file to the
    >>original played directly off the CD, and found that the .ogg
    >>reproduction was about a whole step too high, which corresponds to
    >>roughly 12% too fast (+/- a few percent, I could time a song for more
    >
    >
    > [...]
    >
    >
    >>I'm running Mandrake Linux 9.1 on a Dell Inspiron 8200. I'm using ALSA
    >>version 0.9.0rc8, with the snd-intel8x0 module. It sounds fine, except
    >>for the speed.
    >
    >
    > it seems you have the wrong sample rate. common sample rates for sound
    > cards are 44.1 KHz and 48KHz. i don't know how to set them in alsa but i
    > am pretty sure that could be the problem.
    >
    >
    > hth, armin
    >
    Topher Cawlfield Guest

  3. #3

    Default Re: Audio is about 12% (whole step) too fast

    Hello --

    I had this problem on my laptop as well, which was an AJP 8500P. It had a
    650MHz Pentium III, 256MB SDRAM and an ESS ES1968 audio device. While I
    cannot provide a solution to your problem, I also noticed that my laptop would
    also lock up frequently, no matter if it was running Linux 2.4.18 or
    Windows 2000 SP3, which would suggest a hardware failure of some kind.

    Does your machine lock up ata all?

    Best regards,

    Rohan Beckles
    [email]rohan.becklesdsl.pipex.com[/email]
    --
    ABIT VP6
    Pentium III "Coppermine" 1GHz (2 off)
    PQI 1GB SDRAM
    Seagate Barracuda 20.4GB
    Hercules 3D Prophet GTS Pro 64MB


    ----== Posted via Newsfeed.Com - Unlimited-Uncensored-Secure Usenet News==----
    [url]http://www.newsfeed.com[/url] The #1 Newsgroup Service in the World! >100,000 Newsgroups
    ---= 19 East/West-Coast Specialized Servers - Total Privacy via Encryption =---
    Rohan Beckles Guest

Similar Threads

  1. Video Audio plays too fast
    By understood in forum Macromedia Flash Player
    Replies: 0
    Last Post: February 16th, 07:38 AM
  2. Replies: 7
    Last Post: May 17th, 06:08 PM
  3. Replies: 3
    Last Post: May 17th, 02:41 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139