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Television analog audio II — Parallax Forums

Television analog audio II

Vega256Vega256 Posts: 197
edited 2011-09-07 15:55 in Propeller 1
Starting a new thread to continue the previous one.

http://forums.parallax.com/showthread.php?133829-Television-analog-audio

I am not sure why my TV is not emitting any sound. I have set up the LPF from the comm pin to the RCA connector. I even played a sample from SIDcog, but no audio. I did get results from a small 1/2 watt, 8 ohm speaker.

Comments

  • potatoheadpotatohead Posts: 10,261
    edited 2011-09-07 08:46
    Are you using broadcast mode?

    It appears you are not, after looking the other thread over. Have you connected any other audio source to the TV?
  • Vega256Vega256 Posts: 197
    edited 2011-09-07 08:51
    potatohead wrote: »
    Are you using broadcast mode?

    It appears you are not, after looking the other thread over. Have you connected any other audio source to the TV?
    The TV is receiving no other audio sources.
  • Mike GreenMike Green Posts: 23,101
    edited 2011-09-07 09:00
    Can you please provide a diagram of how you have the Prop and TV connected?
  • Vega256Vega256 Posts: 197
    edited 2011-09-07 11:07
    Audio circuit.

    Audio circuit.jpg
    Audio circuit.jpg
    1024 x 379 - 19K
  • Phil Pilgrim (PhiPi)Phil Pilgrim (PhiPi) Posts: 23,514
    edited 2011-09-07 11:25
    You have it plugged into a red or white RCA jack on the TV and not the yellow one, correct? You also need to select the TV's signal source (usually with the remote) to select the video input rather than the antenna to receive audio on the RCA jacks -- even if you're not using the video input.

    -Phil
  • John AbshierJohn Abshier Posts: 1,116
    edited 2011-09-07 15:31
    My TV that I use with the Prop will not play sound unless there is a video signal.

    John Abshier
  • potatoheadpotatohead Posts: 10,261
    edited 2011-09-07 15:55
    Has another audio source worked? Say a computer, portable media player, VCR, etc...?

    Some TV's do require they detect sync before playing audio. A empty signal works for that.
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