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Old 7th November 2011, 08:49 PM   #1
Elias is offline Elias  Finland
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Thumbs up Stereophonic Sound from a Single Loudspeaker

Hello !

This thread is dedicated for discussion of methods of generating stereo sound in a small room acoustic space by using a single DIY loudspeaker !

Encouraged by the results achieved in the Stereolith thread I explored the concept of single speaker stereo further:

Elias Pekonen Home Page - Stereophonic Sound from a Single Speaker


The general principle I'm using is this:
Click the image to open in full size.

Interesting is the selection of parameter x !
When x = 0, the speaker is bipolar sideways projection (Stereolith).
When x = 1, the speaker is MS stereo.

I think the optimal value is about x = 0.5, which I'm using at the moment.


The Cardboard is back, but now totally different since enhanced with psychoacoustic vector steering !

I've been listening to this for about a week now, and results are very positive ! There is a great potential !

Experimenting recommended !

- Elias
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Liberate yourself from the illusion of two speaker stereo triangle
Dipole Bass vs Monopole Bass Stereophonic Sound from a Single Loudspeaker 3 Speaker Linear Stereo Matrix Wavelets
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Old 7th November 2011, 08:57 PM   #2
sreten is offline sreten  United Kingdom
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Hi

Why? It will never work as well as two separate speakers.

rgds, sreten.
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Old 7th November 2011, 09:18 PM   #3
graaf is offline graaf  Poland
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Quote:
Originally Posted by sreten View Post
It will never work as well as two separate speakers.

rgds, sreten.
why never?
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Old 7th November 2011, 09:21 PM   #4
Elias is offline Elias  Finland
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Amazing !

Quote:
Originally Posted by sreten View Post
It will never work


Luckily I didn't know that because for me this works much better than conventional stereo triangle !

Why ? Because this circumvents many artefacts related of conventional two speaker reproduction.


- Elias
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Liberate yourself from the illusion of two speaker stereo triangle
Dipole Bass vs Monopole Bass Stereophonic Sound from a Single Loudspeaker 3 Speaker Linear Stereo Matrix Wavelets
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Old 7th November 2011, 09:22 PM   #5
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This is not a single loudspeaker.
This is three loudspeakers in one enclosure.
This has been done for decades.
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Old 7th November 2011, 09:24 PM   #6
graaf is offline graaf  Poland
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Quote:
Originally Posted by Frank Berry View Post
This is not a single loudspeaker.
This is three loudspeakers in one enclosure.
This has been done for decades.
could You post any links please?
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Old 7th November 2011, 09:50 PM   #7
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Quote:
Originally Posted by Elias View Post
Hello !

This thread is dedicated for discussion of methods of generating stereo sound in a small room acoustic space by using a single DIY loudspeaker !

Encouraged by the results achieved in the Stereolith thread I explored the concept of single speaker stereo further:

Elias Pekonen Home Page - Stereophonic Sound from a Single Speaker


The general principle I'm using is this:
Click the image to open in full size.

Interesting is the selection of parameter x !
When x = 0, the speaker is bipolar sideways projection (Stereolith).
When x = 1, the speaker is MS stereo.

I think the optimal value is about x = 0.5, which I'm using at the moment.


The Cardboard is back, but now totally different since enhanced with psychoacoustic vector steering !

I've been listening to this for about a week now, and results are very positive ! There is a great potential !

Experimenting recommended !

- Elias
Elias,
You are generating stereo sound with three discreet loudspeakers that happen to be in a single box, not "Stereophonic Sound from a Single Loudspeaker".

What is "parameter x", and how is "parameter x" varied between 0 and 1 ?
A wiring diagram would be helpful for others to do the recommended experimenting ...
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Old 7th November 2011, 10:01 PM   #8
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Quote:
Originally Posted by Elias View Post
I think the optimal value is about x = 0.5, which I'm using at the moment.
Now we're talking How did you implement the rematrixing?
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Old 7th November 2011, 10:12 PM   #9
Elias is offline Elias  Finland
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Quote:
Originally Posted by Frank Berry View Post
This is not a single loudspeaker.



It's a multi element single loudspeaker !


- Elias
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Liberate yourself from the illusion of two speaker stereo triangle
Dipole Bass vs Monopole Bass Stereophonic Sound from a Single Loudspeaker 3 Speaker Linear Stereo Matrix Wavelets
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Old 7th November 2011, 10:30 PM   #10
Illusus is offline Illusus  Canada
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Even if this "never" surpasses conventional stereo set ups it is still cool. Ambiphonics is an esoteric PITA which will not replace my stereo but I still had a ton of fun playing with it. I'm definitely going to play with this.
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