Cable from TV-card to soundcard, how to get it to work?


Results 1 to 14 of 14

Thread: Cable from TV-card to soundcard, how to get it to work?

  1. #1
    Join Date
    Mar 2003
    Location
    UK
    Posts
    621

    Cable from TV-card to soundcard, how to get it to work?

    Put on of they 4-pin CD cables between the TV card and the soundcard. The ones that usually function to give 'analog' sound out of the CD, with the sound not needing to go through the CPU. But nothing has changed.

    Does it need to be activated or configured in some way? If so how? I'm trying to get rid of the unaceptable latency (sound lags picture) of alsa.
    MI6, Offensive Information, Hackers, Encryption, UFO, AOL, Infowar, Bubba, benelux, Ufologico Nazionale, domestic disruption, 15kg, DUVDEVAN, debugging, Bluebird, Ionosphere, Keyhole, NABS, Kilderkin, Artichoke, Badger, spookwords, EuroFed, SP4, Crypto AG – a few, alleged, Echelon keywords. Please add some to your email signature. Full list: http://www.serendipity.li/cia/bz1.html
    http://www.nosoftwarepatents.com/

  2. #2
    Join Date
    Sep 2003
    Location
    Rochester, MN
    Posts
    3,604
    It would be a different input to the sound card which may need to be unmuted in alsamixer if you haven't already. Other than that I don't know of anything that needs to be done.

  3. #3
    Join Date
    Mar 2003
    Location
    UK
    Posts
    621
    Looked at the sound card and the tv card in alsamixer. Nothing has changed - no new column thing - that I could see. Unmuted everything. Did see a mention of 'line 3' in a K audio thing, perhaps that's it. There are two suitable sockets to plug the cable into on the TV-card, perhaps I should try the other one.
    MI6, Offensive Information, Hackers, Encryption, UFO, AOL, Infowar, Bubba, benelux, Ufologico Nazionale, domestic disruption, 15kg, DUVDEVAN, debugging, Bluebird, Ionosphere, Keyhole, NABS, Kilderkin, Artichoke, Badger, spookwords, EuroFed, SP4, Crypto AG – a few, alleged, Echelon keywords. Please add some to your email signature. Full list: http://www.serendipity.li/cia/bz1.html
    http://www.nosoftwarepatents.com/

  4. #4
    Join Date
    Oct 2002
    Location
    Denver, Colo.
    Posts
    291
    Could your playback program be where the latency is? I seem to remember ways to adjust that in mplayer...or vlc, what are you using?
    And for a fleeting second...I was not sure if I was a man dreaming I was a butterfly, or, a butterfly dreaming I was a man....Lao-tzu

  5. #5
    Join Date
    Sep 2000
    Location
    N California
    Posts
    951
    You don't mention which card you're using.

    The Hauppauge card I use has an external audio out jack that needs to be connected to the input jack on the audio card. I use an external cable.

    Are you sure you are making the proper connections?

    Good Luck,

  6. #6
    Join Date
    Mar 2003
    Location
    UK
    Posts
    621
    'I seem to remember ways to adjust that in mplayer...or vlc, what are you using?'
    - I think it's mplayer, it allows you to adjust the audio/video gap by hitting +/-. Tried it with mplayer: by default it assumes you have wired the card to the sound card, when playing tv://, and ignores the sound, you can make it take cognisance of the sound with somethingorother=0. Did this and it said it was makeing sound but nothing came out of the loudspeakers - if you can fix this problem then my problem should be sorted.

    'The Hauppauge card I use has an external audio out jack that needs to be connected to the input jack on the audio card. I use an external cable.

    Are you sure you are making the proper connections?'
    No to second question. On the first point: to give the grim details the card is a Peak tv/multimedia which has Philips saa7133 chips. The multi-cable supplied should have your thing, according to the manual, but it is missing - it only has four leads not five. Emailed the shop about this and the teenage git said the multi-cable was what came with the card, which is presumably true as far as it goes. There are two CD-4pin type connectors on the card. I tried the second one - my first post referred to the first one - and now get sound but only out of 1 speaker. The sound responds to CD in alsamixer - the thing thinks it's the CDROM not unaturally perhaps. (The sound also seems slightly fuzzy.) So if this could be made into stereo out of two speakers the problem is fixed.

    One vaugh possibility is that the card is turned to mono and the tv players can't shift this. Have forgotten the name of the program that manipulates these cards.

    Thanks for your help.
    MI6, Offensive Information, Hackers, Encryption, UFO, AOL, Infowar, Bubba, benelux, Ufologico Nazionale, domestic disruption, 15kg, DUVDEVAN, debugging, Bluebird, Ionosphere, Keyhole, NABS, Kilderkin, Artichoke, Badger, spookwords, EuroFed, SP4, Crypto AG – a few, alleged, Echelon keywords. Please add some to your email signature. Full list: http://www.serendipity.li/cia/bz1.html
    http://www.nosoftwarepatents.com/

  7. #7
    Join Date
    Oct 2002
    Location
    Denver, Colo.
    Posts
    291
    When I goggled the chip number, I found a pdf file from phillips, and it is a stereo chip, seems to be fairly capable, too. Anyway, I have found that those cd audio cables, the ones with the plain flat black connectors,really don't have a set wiring code, the left and right channels could be switched, sometimes only 1 ground wire is used, and other abnormalities. On these connectors, if you have them, on the bottom side,ther are some tabs thathold the pins in place. If you gently lift these, you can pull the wires out and realign them as you like...I'll try to find some pics if you'd like.
    And for a fleeting second...I was not sure if I was a man dreaming I was a butterfly, or, a butterfly dreaming I was a man....Lao-tzu

  8. #8
    Join Date
    Mar 2003
    Location
    UK
    Posts
    621
    Quote Originally Posted by glasdave View Post
    I have found that those cd audio cables, the ones with the plain flat black connectors,really don't have a set wiring code, the left and right channels could be switched, sometimes only 1 ground wire is used, and other abnormalities. On these connectors, if you have them, on the bottom side,ther are some tabs thathold the pins in place. If you gently lift these, you can pull the wires out and realign them as you like...I'll try to find some pics if you'd like.
    Without wishing to tempt fate that is likely to be it. It only has three wires, one of the end wires doesn't exist. Have the feeling the middle two are ground, but don't know where I've got that from so it's probably bollocks.

    It isn't stricktly true that only one speaker makes a noise - the subwoofer, LFE, does also. That could be something to do with the ALSA default which is 2 front channels + LFE.

    Have gathered that stereo only needs three wires so the existing number of wires should do it if in the correct places? I'll try just randomly moving the pins though am a bit unclear about whether to do it at the soundcard end as well. Should not be possible to fry anything perhaps?

    Great thanks.

    http://www.epanorama.net/documents/p...udio_wire.html

    pin 1 - left signal
    pin 2 - ground
    pin 3 - ground
    pin 4 - right signal
    (but see link)
    Last edited by lugoteehalt; 01-17-2009 at 07:33 AM. Reason: My bollocks fell off.
    MI6, Offensive Information, Hackers, Encryption, UFO, AOL, Infowar, Bubba, benelux, Ufologico Nazionale, domestic disruption, 15kg, DUVDEVAN, debugging, Bluebird, Ionosphere, Keyhole, NABS, Kilderkin, Artichoke, Badger, spookwords, EuroFed, SP4, Crypto AG – a few, alleged, Echelon keywords. Please add some to your email signature. Full list: http://www.serendipity.li/cia/bz1.html
    http://www.nosoftwarepatents.com/

  9. #9
    Join Date
    Mar 2003
    Location
    UK
    Posts
    621
    Succesful thread: that solved it; although the sound quality can be dodgy sometimes - perhaps improve the wire's sheilding.

    As it happens moved white wire from a middle position to the end on the tv-card end of the CD audio connection wire. Levered up white plastic tab with the pointed end of a razor modelling knife and pulled out the wire then pushed it into the new position.

    Modern standard is for the two ends to be the left and right channels and the middle two holes to be ground. The wire is shielded, a la co-ax, with wire connected to ground via these connections.

    Get left + right channels + subwoofer channel. Perhaps this is the hardware default and it is impossible to get a software grip on this sound.
    MI6, Offensive Information, Hackers, Encryption, UFO, AOL, Infowar, Bubba, benelux, Ufologico Nazionale, domestic disruption, 15kg, DUVDEVAN, debugging, Bluebird, Ionosphere, Keyhole, NABS, Kilderkin, Artichoke, Badger, spookwords, EuroFed, SP4, Crypto AG – a few, alleged, Echelon keywords. Please add some to your email signature. Full list: http://www.serendipity.li/cia/bz1.html
    http://www.nosoftwarepatents.com/

  10. #10
    Join Date
    Jun 2002
    Location
    Jamaica Plain, MA
    Posts
    458
    lugoteehalt

    you might want to look into using the saa7134-alsa driver. This might allow you to get synced audio and video without the audio cable.
    Last edited by Modorf; 01-20-2009 at 02:37 PM.

  11. #11
    Join Date
    Mar 2003
    Location
    UK
    Posts
    621
    Quote Originally Posted by Modorf View Post
    lugoteehalt

    you might want to look into using the saa7134-alsa driver. This might allow you to get synced audio and video with the audio cable.
    Thanks. Had been using it, but got the latency problem with it especially if not using OSS emulation. Don't know if it has some way of dealing with latency that I wasn't using, don't think so.
    MI6, Offensive Information, Hackers, Encryption, UFO, AOL, Infowar, Bubba, benelux, Ufologico Nazionale, domestic disruption, 15kg, DUVDEVAN, debugging, Bluebird, Ionosphere, Keyhole, NABS, Kilderkin, Artichoke, Badger, spookwords, EuroFed, SP4, Crypto AG – a few, alleged, Echelon keywords. Please add some to your email signature. Full list: http://www.serendipity.li/cia/bz1.html
    http://www.nosoftwarepatents.com/

  12. #12
    Join Date
    Jun 2002
    Location
    Jamaica Plain, MA
    Posts
    458
    not sure if there is away on the drivers. With tv player software, there usually is an audio sync adjustment.
    As for OSS emulation, there is a saa7134-oss driver that give you an oss interface.

  13. #13
    Join Date
    Mar 2003
    Location
    UK
    Posts
    621
    Quote Originally Posted by Modorf View Post
    With tv player software, there usually is an audio sync adjustment.
    Didn't know that, thought it was only mplayer. Thanks, I'll investigate that.
    MI6, Offensive Information, Hackers, Encryption, UFO, AOL, Infowar, Bubba, benelux, Ufologico Nazionale, domestic disruption, 15kg, DUVDEVAN, debugging, Bluebird, Ionosphere, Keyhole, NABS, Kilderkin, Artichoke, Badger, spookwords, EuroFed, SP4, Crypto AG – a few, alleged, Echelon keywords. Please add some to your email signature. Full list: http://www.serendipity.li/cia/bz1.html
    http://www.nosoftwarepatents.com/

  14. #14
    Join Date
    Jun 2002
    Location
    Jamaica Plain, MA
    Posts
    458
    Quote Originally Posted by lugoteehalt View Post
    Didn't know that, thought it was only mplayer. Thanks, I'll investigate that.
    I would say most of the media players I have used have some form of audio/video sync adjustment.

Posting Permissions

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