Bad audio from Tivo? / "Intermittent" "squealy" audio / "Kazoo" Audio

Discussion in 'TiVo Help Center' started by mrcoaster, May 2, 2002.

  1. Jan 8, 2004 #101 of 228
    Bruin

    Bruin New Member

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    Mar 31, 2003

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    don't think it has to do with how full a HD is because I had a 60+120gb hard drives and only 6 shows at medium quality recorded.
     
  2. WildwoodBob

    WildwoodBob New Member

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    Jan 12, 2004
    I have a Toshiba SD-H400 Combination Progressive-Scan DVD Player and TiVo Digital Media Server that I got in November and it has been working well. It seems that the Kazoo problem just cropped up last night.

    A soft reboot fixes the problem.
     
  3. ElVee

    ElVee I have an old sumo

    367
    3
    Feb 20, 2002
    Bethpage, NY
    I've just started having this problem with the upgrade to 4.0.1

    I've never heard it happen while watching the live buffer. It only seems to happen when recording a scheduled program.

    I have an unmodified Sony SV3000

    What's the latest on a possible fix?
     
  4. ccwf

    ccwf 国際化 Member

    8,634
    1
    Dec 29, 2001
    Malibu
    Latest I read was that TiVo had difficulty making the problem occur on-demand, which makes diagnosing and fixing the problem extremely difficult. If anyone has figured out a reasonably reliable way to trigger the bug, post it, and you can help get this bug finally squashed.
     
  5. coldtoes

    coldtoes vermicious knid

    655
    1
    May 29, 2002
    Boston, MA

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    Just to encourage anyone who has just developed this problem, kazoo audio has not reoccurred on my 60-hr S2 since I rebooted in September 2002. I know that not everyone's has stayed fixed, but my experience at least shows that you have a decent chance of not having an ongoing problem.
     
  6. ElVee

    ElVee I have an old sumo

    367
    3
    Feb 20, 2002
    Bethpage, NY
    Well, I rebooted yesterday and so far, so good.
     
  7. halindrome

    halindrome New Member

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    Apr 7, 2003
    Minneapolis
    I am seeing this on programs that were recorded last week on my 60 hr philips series 2. Basically right after a new software update showed up and the system rebooted itself. I record off of satellite via a DirecTV RCA receiver, and have never had this audio problem before. Now I am seeing it on a bunch of programs. Rebooting doesn't eliminate the problem on programs that were already recorded. I have not heard this problem on live TV.
     
  8. ElVee

    ElVee I have an old sumo

    367
    3
    Feb 20, 2002
    Bethpage, NY
    So far, so good after the reboot.

    Fingers crossed.
     
  9. Mar 9, 2004 #109 of 228
    Cervaise

    Cervaise New Member

    16
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    Jan 19, 2004
    USA
    I'm very happy to learn I'm not alone here, but I'm not so happy to learn that "it's a known problem that can't be diagnosed and fixed permanently."

    My experience is the same as everybody else's: tinny audio, like CD-quality stream reduced to 8-bit mono; problem narrowed to TiVo by checking the cable in the other room (that has no DVR); also tried putting machine on standby to get clean audio throughput. It's definitely something about how TiVo handles sound compression.

    And like everybody else, I tried a soft reboot, which cleared up the problem, and then I came here to do some research and discovered this thread.

    Would it be worthwhile to submit a support request to TiVo just so they've got a record of it?
     
  10. Mar 9, 2004 #110 of 228
    ccwf

    ccwf 国際化 Member

    8,634
    1
    Dec 29, 2001
    Malibu
    TiVo knows about this rare problem but doesn't know how to make it occur on-demand, which makes tracking down the cause and fixing it difficult.

    [total speculation]
    I wonder if this is related to the loss of audio with CacheCARD upgrade problem…. If so, perhaps the smoothing caps mentioned in those threads would help with this issue. Also, has anyone tried using another power supply?
    [/total speculation]
     
  11. Norwain

    Norwain New Member

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    Sep 24, 2002
    Little Rock
    Same problem with Series 2. Reboot fixed it for now.
     
  12. shibanski

    shibanski New Member

    2
    0
    Mar 27, 2004
    Austin, TX
    I’ve owned at Tivo for over two and a half years now, and I’ve experienced this “kazoo” audio problem since the day I bought mine. I thought I’d share what I’ve learned about this problem during this time.

    As described earlier, kazoo audio sounds like tinny audio - a CD-quality stream reduced to 8-bit mono. The mp3 posted at mywebpages.comcast.net/kaoku...ygar/index.html is a great example of this problem.

    I have a Sony SVR-2000 currently running v3.0-01. My hard drive crashed about a year after I purchased it, so I installed a new 120GB hard drive. I had this audio problem with the old hard drive, and I still have it with the new one.

    It’s been my experience that the amount of free space on the hard drive does not affect this problem.

    It’s been my experience that the selected recording quality does not affect this problem.

    I’ve rebooted my Tivo many times in the past couple years, and I’ve found that this does nothing to prevent the problem from reoccurring.

    I have cable through Time Warner cable in Austin. I use their Scientific Atlanta cable box. If I go through my cable box and bypass my Tivo I don’t have this problem.

    There is only one channel where I’ve never experienced this problem – HBO. I’m not sure how the audio broadcast of HBO differs from other channels on my cable system, but there’s got to be some kind of difference.

    On the other hand, there are some programs that seem to be consistently plagued with the kazoo audio program. One program that comes to mind is the McLaughlin group on PBS. I watch this program weekly, and when I watched it last night almost the entire show was recorded in kazoo audio.

    I called Tivo shortly after I purchased (Oct. 2001) and told them about this problem. The person I spoke to told me that he had never heard of it. He told me that it sounded like I had a cable problem. I haven’t called Tivo since that time, but I’m sure whoever I talked to would still deny knowledge of the problem – despite that fact that it has been documented fairly well in this forum.

    I’d purchase another Tivo, to see if the problem goes away, but as you read through this discussion thread you’ll notice that all types of Tivos seem to be affected by this problem (Series One and Two, different manufacturers, different software versions, etc.) So, there’s no guarantee that a new unit won’t have this problem. Besides, I’ve already laid out $200 for lifetime service, and I don’t feel like laying out another $300 for another Tivo.

    So, what is causing this problem? I tend to agree with Cervaise - it's definitely something about how Tivo handles sound compression. Some audio streams it seems able to handle without incident (HBO in my case), while other audio streams it seems to have a lot of problems with (McLaughlin group).

    I really enjoy my Tivo, but I can’t fully recommend it to anyone else until they come up with a fix for this annoying problem.

    I am sending a copy of this post to Tivo customer support. I suggest that anyone else in a similar situation document their problem and also let Tivo know.
     
  13. ccwf

    ccwf 国際化 Member

    8,634
    1
    Dec 29, 2001
    Malibu
    There's an acknowledgement of the problem by TiVoBill above in this thread. If you can make the kazoo audio problem occur consistently on your TiVo, you should contact them since, according to TiVoBill's post, one of the difficulties in resolving the bug has been the lack of an ability to reproduce it on-demand in their lab.

    I also wonder if this problem might be in some way related to the total loss of audio until reboot problem, for which jafa believes he might have found the cause and a solution. See that thread or jafa's forum for more details.
     
  14. samkuhn

    samkuhn New Member

    112
    0
    Mar 29, 2002
    I had this problem crop up too. I have a ATT S2 Tivo. This is the first time I've heard it. The tinny audio was present in all recordings, including the yellow star audio! It did not, however, include mp3s that I played back using HMO.

    A soft reboot fixed it for me. Just here checking things out. Glad to see it is not a sign of impending doom for my Tivo.
     
  15. rhreed

    rhreed New Member

    5
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    Apr 3, 2004
    Denver, CO
    Well I have read through the sound quality thread and here's my version. I get decent sound out of recordings on regular (non HD channels); but just viewed the last Sopranos (of 4/11)..HBO of course and the sound was awful. Wouldn't describe it as kazoo or tinny" but had to crank the TV volume (Hitachi rear projection HD) up to almost max to hear the dialog. I had about decided that the Tivo (Series 2) couldn't handle the digital input but after reading previous comments on this thread sounds like it may be more complex. The sound is very subdued with a lot of background static. Don't hear it when watching "live TV" although sound quality is definitely not as good as pre Tivo.
    I am just using co ax in and out of Tivo. My receiver (Onkyo) has no effect on the sound. Would sound cables from the Tivo to TV help this or is this just a variation of the tinny sound syndrome?
    Recorded ER the other night (no digital input) and sound was OK (again not
    up to pre Tivo standards).
     
  16. ccwf

    ccwf 国際化 Member

    8,634
    1
    Dec 29, 2001
    Malibu
    This doesn't have anything to do with your main problem, but you're using RF to record downsampled HD!? RF is very limited and will result in an enormous reduction in both audio and video quality.
     
  17. topolski

    topolski Can't Remember

    21
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    Jun 15, 2002
    Hillsboro, OR
    Nope, not the same problem.
     
  18. rhreed

    rhreed New Member

    5
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    Apr 3, 2004
    Denver, CO
    Charles;
    What is the solution to "using RF to record downsampled HD"?
    Thanks,
    RR
     
  19. ccwf

    ccwf 国際化 Member

    8,634
    1
    Dec 29, 2001
    Malibu
    Use something other than RF. Composite (yellow cable/jack) and stereo cables are significantly better than RF. S-Video is a little better than composite. For those models that have it, component (three video cables) is a tiny bit better than S-Video, and DVI/HDMI are even better still.
     
  20. kspince

    kspince New Member

    1
    0
    Apr 21, 2004
    Just had the problem occur to me today, having the audio sample there confirmed that this was the problem.

    I reset/reboot it as the rest the members did - so here's what I've determined.

    The kazoo sound starts at a certain time, and happens up until you reboot it.

    Before I reboot the system, live tv had the same kazoo sound - so did a number of my recent recordings. After I reboot, live tv sounds fine, however, a few recent recordings (I'd imagine within the past day or so) still had the kazoo sound, meaning those recorded ones permanently have the kazoo sound as part of the audio.

    Prior to the first recording I can find with that problem, all of my older recordings sound fine, so it's definitely something that happened between last night and now.

    Hope it doesn't come back.
     

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