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Monoaural vs. Stereo

Discussion in 'General Electronics' started by KellyClarksonTV, Jul 18, 2004.

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  1. Why aren't stereophonic telephones around yet? The quality of phone calls would
    be a lot better. How about Dolby 5.1 sound quality phones? (5 speakers and a
    Subwoofer) Is it possible to combine 2 or more speaker signals into one signal
    so existing Monoaural phones could still be operated and the signals could be
    sent through the phone system in one line and then be decoded by the stereo
    telephone units?

    Also, why don't humans (or any other animal for that matter of fact) have two
    or more mouths so we could speak in Stereo quality? (LOL)
  2. Sporkman

    Sporkman Guest

  3. (KellyClarksonTV) wrote in
    It seems that so far most people are happy with one mouth, and unless it
    was on the bottom of your feet you most likely wouldn't be able to tell the
    difference. As for the phones I don't see that happening, no one I know
    would buy a new phone and the telecoms wouldn't want to upgrade their
    equipment plus people don't talk with enough bass to require a subwoofer.
    The only thing I can think of 5.1 being good for is if you wanted to call a
    radio station or something and get a feed and even that is still stereo.
  4. but Monoaural is simple OLD technology! Radios, TVs, and all Recording Media
    have all been updated to either Stereo or Dolby 5.1. Why not telephones?
  5. Karl Uppiano

    Karl Uppiano Guest

    Because it would be a total freakin' waste of bandwidth, which is scarce
    enough as it is. More channels don't equal better technology; things like
    wireless phones, voice messaging, text messaging, imaging, caller id --
    Those are new and better technology where it matters, and more importantly,
    that people will pay for.

    There is no significant psycho-acoustic advantage to hearing someone's voice
    in stereo for point-to-point communication. The telephone system is pretty
    well matched to the physics of speech. The application doesn't demand
    multi-channel audio. Music, movies and other entertainment, even that's
    debatable at times. You often get the impression that the producer doesn't
    know what to do with all those channels, so they get gimmicky.

    P.S., I realize the OP was probably trolling, but I responded because there
    are some interesting points here.
  6. Ken Taylor

    Ken Taylor Guest

    Of course he's trolling. He's just learnt about stereo, so now he has
    something other than batteries to talk about.
  7. Dbowey

    Dbowey Guest

    kelly etc. posted:

    << but Monoaural is simple OLD technology! Radios, TVs, and all Recording Media
    have all been updated to either Stereo or Dolby 5.1. Why not telephones?
    1. Because each mike would pick up the same audio and there would be no
    spatial difference.

    2. There is insufficient bandwidth. A high-quality telephone channel uses the
    spectrum of about 300 to 3400Hz and that is encoded to a 64 kbit/s digital
    channel for switching and transmission.

    3. Old is not necessarily bad. Be more open=minded.

  8. classd101

    classd101 Guest

    hmmmm It could be done, but, what type of battery do you plan on powering this with?

  9. How about recycled alkaline batteries that I have recharged?

    By the way, does anyone recharge standard alkaline batteries?
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