Pseudo-stereo alghritm?

[ZibiSound]

Hello,
How to make pseudo-stereo output from mono input?

[frank]

Couple of different ways google it to show you some of them. Basically delays and filtering.

[ZibiSound]

Okay, so maybe another thing. If I want to send signal eg. to delay memory I must sum left/right channels before. But doing simply two "rdax adcl/r, 0.5" gives a bit muffled sound. Is there any simple algo to add channels without losing much sound details?

[potul]

What you describe is simply adding L and R channels. Nothing is going to be cleaner/simpler than this.
If you are getting a loss of frequencies, the origin might be in your input signals. Maybe some comb filtering happening? Just guessing.

You can try to increase the 0.5 to get more volume, but be careful with clipping.

[ZibiSound]

If you are getting a loss of frequencies, the origin might be in your input signals.

Well, maybe expressed myself wrong. I meant losing the stereo panorama and it sounds strange but its normal, I think. Delaying one channel relative to the other about 10ms gives stereo impression, but what if I don't want to use delay? How to do it another way? What kind of filtering use?

[potul]

Maybe let's start from the beginning because I'm not sure I understand what you need.

Do you have stereo input, whant to process it in mono, and then generate a stereo output again?

[ZibiSound]

No, I have mono input (without stereo panorama, of course) and I want to make output sound like stereo.

[potul]

"sound like stereo" you mean stereo output to the L and R channels?
It depends on the effect you are working on. But at the end, you need to create some differences between left and right channel. It can be adding a delay between both, having a different filter, some modulation between them... there are multiple opitons.

Maybe if you tell us more on the code and effect you are working on we can figure out something more.

[potul]

http://www.csounds.com/journal/issue14/ ... tereo.html

[ZibiSound]

Thank you for this link, I'll try.

[ZibiSound]

What are poles and zeros? How to understand that?

[potul]

Find some Internet tutorial about filters and you will find what poles and zeros are.

If you use the Gerzon scheme in the same paper, you will only need 2 identical All-Pass filters.

[ZibiSound]

If you use the Gerzon scheme in the same paper, you will only need 2 identical All-Pass filters.

Okay, but what is "Width gain"?

[potul]

Okay, but what is "Width gain"?

I assume it's just a gain stage that controls the depth of the pseudo stereo.