Author Topic: Powering HDMI Audio Extractors vs HDMI-VGA-Audio Converters  (Read 482 times)

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Offline KorayTopic starter

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Hi all,

I have a Google Chromecast device with a single HDMI output which I want to use with a HDMI projector. Unfortunately the projector has no audio output and I have no way to get sound out of such system.

When I search for in-line HDMI Audio Extractors I only find tiny USB powered items at around 10USD range, but when I search for HDMI-VGA Converters (with audio output) I find self powered in-line adapters for about 2USD price range. Price is not important, but I don't want to complicate the setup with an extra power cable for the audio extractor.

Here are some questions:

  • What is the difference?
  • Why can't they build cheap and simple audio extractors without audio output?
  • Can I re-purpose an audio capable in-line HDMI-VGA converter to HDMI audio extractor?

I am attaching two sample devices for reference.

K.

987974-0
987978-1
« Last Edit: May 10, 2020, 08:18:21 am by Koray »
 

Online NiHaoMike

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Re: Powering HDMI Audio Extractors vs HDMI-VGA-Audio Converters
« Reply #1 on: May 10, 2020, 12:52:00 pm »
Have you considered opening up the projector and rewiring the speaker output to external speakers?
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Offline KorayTopic starter

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Re: Powering HDMI Audio Extractors vs HDMI-VGA-Audio Converters
« Reply #2 on: May 10, 2020, 03:51:49 pm »
The projector has no audio. I wouldn't do that anyway, I can just use a powered audio extractor.

But I wonder if the HDMI VGA cable can be converted into a HDMI bypass with audio output?

K.
 

Online NiHaoMike

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Re: Powering HDMI Audio Extractors vs HDMI-VGA-Audio Converters
« Reply #3 on: May 10, 2020, 06:23:23 pm »
But I wonder if the HDMI VGA cable can be converted into a HDMI bypass with audio output?
Not easily. HDMI operates well into the GHz and the only proper way to split it is to use active circuits. You might manage to get away with a parallel connection for such a short distance, but HDMI is fine pitch enough that I wouldn't consider it trivial to solder.
Cryptocurrency has taught me to love math and at the same time be baffled by it.

Cryptocurrency lesson 0: Altcoins and Bitcoin are not the same thing.
 


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