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Eureka or bust... Stereo experiments.
Eureka or bust... Stereo experiments.
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Old 7th November 2019, 06:25 PM   #41
soundbloke is offline soundbloke  United Kingdom
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Quote:
Originally Posted by Robbintip View Post
Are you talking about Stereo or Mid/Side? They are not the same indeed...
I was referring to stereo represented in MS format as opposed to LR format. Their relationship via energy preserving coding/decoding means they are the same thing information-wise.

But reproducing only an M channel over two loudspeakers merely introduces some of the deleterious artefacts of conventional stereo. Comparing "apples to apples" is then not so straightforward.
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Old 7th November 2019, 06:45 PM   #42
TNT is offline TNT  Sweden
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Originally Posted by jan.didden View Post
But because of the ear-brain working, it is possible that even if you create exactly the original sound wave you can still 'hear' something else than the original
The term is perception.

Jan
Well, If you happened to chew a Juicy Fruit at the time of the original event but didn't at reproduction - and felt "I miss something" - I cant help you

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Old 7th November 2019, 09:33 PM   #43
Robbintip is offline Robbintip  Netherlands
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Quote:
Originally Posted by soundbloke View Post
I was referring to stereo represented in MS format as opposed to LR format. Their relationship via energy preserving coding/decoding means they are the same thing information-wise.

But reproducing only an M channel over two loudspeakers merely introduces some of the deleterious artefacts of conventional stereo. Comparing "apples to apples" is then not so straightforward.
Thank you for your reply. M/S is an interesting topic. I've been looking into to it today, the interchangeability is fascinating. The artefacts you speak of, would they exist if playback was over a single loudspeaker, in other words are you talking about comb filtering artefacts?


Quote:
Originally Posted by TNT View Post
Well, If you happened to chew a Juicy Fruit at the time of the original event but didn't at reproduction - and felt "I miss something" - I cant help you

//
Agreed. We can look into possibilities of injecting secundary signals during playback.
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Old 11th November 2019, 03:41 AM   #44
Robbintip is offline Robbintip  Netherlands
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A more serious post today...

YouTube
A YouTube video titled "Hear the first stereo ever, Blumlein's original recordings from 80yrs ago"

I've watched it on the setup with 4 monopole speakers as per the first experiment.
The narrating voice clearly audible as if coming from the front speakers.
The recordings made by Blumlein: coming from all around.

Another original:
YouTube
This 'walking and talking' video demonstration of channel seperation:
I obviously can hear who is talking in the video, left or right, sound coming in from the front. But when the 'clapper' is shut with force at 1:22 I can hear the reflections of the sound coming in from behind as well.

Anybody else testing this?
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Last edited by Robbintip; 11th November 2019 at 03:45 AM. Reason: grammar
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Old 11th November 2019, 05:43 AM   #45
wiseoldtech is offline wiseoldtech  United States
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Ah, the wonders of stereophonic sound!
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