On Thu, 22 Aug 2019 16:45:46 -0700, Mike Easter wrote:

> When I started to employ my 3B RPi using some leftover parts, I had a
> VGA monitor and USB kb & mouse, so I needed an HDMI to VGA adapter.
> There were places that had adapters w/ a 3.5mm for audio, but I opted
> for an adapter w/o audio plug outlet in favor of just using the RPi's
> audio outs for some little 'computer speakers'.
>
> But, I'm puzzled about the analog vs digital.  I would assume that the
> HDMI audio is digital, but the 3.5mm plug sounds/looks like an analog
> audio outlet.
>
> But, I'm sure those HDMI to VGA adapters w/ audio plug aren't converting
> digital to analog audio.  What is the answer to my confusion?

Just got a cheap HDMI to VGA adapter with audio from CPC:

AV27363 - UNBRANDED 77HDMIVGCBL033 HDMI to VGA Lead with Audio, Gold
Plated Connections, 1m Black - £6.60 + VAT

As HDMI has no analog audio it must be converting the HDMI digital
audio stream to stereo analog on its 3.5 mm jack plug. Not sure if it
or omxplayer on a Raspberry Pi is doing a basic 5.1 or 7.1 mix down
to stereo. All I know is that if I play a channel check video file
with only a 5.1 or 7.1 sound track I do hear all the channels on the
correct side (and center) and at various levels. Except the .1 (LFE)
which is to be expected.

Quality is pretty good, the level might be a bit on the high side.

--
Cheers
Dave.

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