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What in the world......

Discussion in 'DIRECTV General Discussion' started by eneg, Sep 4, 2009.

  1. hasan

    hasan Well-Known Member

    Sep 22, 2006
    Ogden, IA
    No, 1 dB is the smallest increment that the human ear can detect. 3 dB is double the power and has nothing to do with threshold detection.
  2. BubblePuppy

    BubblePuppy Good night dear Smoke... love you & "got your butt

    Nov 3, 2006
    Your correct, it is 1db, which is very small. I doubt the average human can actually detect that small of a change. My point is, is that 3db is a very small increase in sound level, however, that very small increase requires a doubling of power. That is one reason for the use of compression, so that big changes in the sound levels, in music for example, doesn't over tax the power output capabilities of a amp.
  3. smiddy

    smiddy Tain't ogre til its ogre

    Apr 5, 2006
    I've read that someone is trying to pass a law forcing services to keep audio levels very similar across their service.

    Also, there are some companies already delivering work around, like Audyssey Dynamic Volume: http://www.audyssey.com/technology/dynamicvolume.html
  4. Kojo62

    Kojo62 AllStar

    Aug 9, 2007
    PA, USA
    Yes. Especially in rooms other than where our main entertainment system happens to be, such as the home office or the bedrooms. I don't know about you, but we all can't afford full-out A/V surround-sound rigs in every room of the house.
  5. Bambler

    Bambler Legend

    May 30, 2006
    Yeah, the bedroom TV is when it's most bothersome for me. My Sony TV does have a volume auto-level feature, but it doesn't work for a damn.

    I set the TV at a low volume level, snooze off, then SCREAM, SCREAM, SCREAM :eek2:.

  6. paulman182

    paulman182 Hall Of Fame

    Aug 4, 2006
    People could stop watching programming that is interrupted by commercials.
  7. eneg

    eneg Mentor

    Mar 14, 2007
    The problem for me is that I have an office right off of the living room where my HT is located.
    I head into the office and sit at the computer quite a bit of the time.
    I leave the TV on, so that I can listen to it (I'm doing that right now!)
    All of a sudden, the sound gets so loud that I have to go running back into the LR to tone it down.
    There is no doubt in my mind that the volume gets loud enough that my neighbors can hear it!
    That's ridiculous!
  8. hasan

    hasan Well-Known Member

    Sep 22, 2006
    Ogden, IA
    Compression, clipping, or noise-gating have no place in a hi-fi audio stream, period. Of course, much of what we get on TV can't be considered anything like "hi-fi".

    I take nothing away from the core discussion...the commercials are atrocious in terms of their aggressive nature. I just wanted to correct a factual error as there are enough of them on the internet as it is. At least we can keep our engineering definitions accurate, and not have them become just another "opinion".:)
  9. Richard Chalk

    Richard Chalk Legend

    Jan 4, 2004
    I have a Sony receiver with an auto-levelling setting, but that presents another problem. If you set it on MAX, then every time the source switches from 2-channel to 5.1 channel, there is a momentary break, during which the ALC sets itself to maximum gain. Then the first sound or syllable of the program almost blows you out of the room, before the ALC has a chance to reset to the program level. I guess it needs to be "gated" somehow, but so far, Sony doesn't do that.

  10. BattleZone

    BattleZone Hall Of Fame

    Nov 13, 2007
    As I mentioned earlier, this is a big enough problem, and common enough complaint, that there are already bills in Congress to address the problem (not that I'm a fan of government intervention).

    The solution would be to have the average volume of the commercial set roughly equal to the AVERAGE volume of the programming content. Given that nearly all TV networks use automation, this *is* possible, though it would require equipment upgrades at the stations.

    I can tell you that the trade mags for TV broadcasters are *full* of articles about the difficulties of dealing with various types of digital audio streams from different sources. The problem is getting a lot of attention from equipment manufacturers, but change in the TV broadcasting industry is slow, and it's even slow right now as most networks are looking at slashed budgets when they are still trying to pay off their new HD equipment. Getting the money to buy upgraded equipment to address these audio issues won't be easy for many stations, but over time, I'm pretty confident that the industry will develop and deploy a solution, because they'd rather fix it themselves than face a government mandate, which may or may not make as much sense.

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