What filter/effect is this?

[takato14]

This is what it looks like in a spectrogram, its like an LFO/phaser but different, I can't find what it's called for the life of me and I need it

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[TristanLuigi]

The sound depicted here is a Sheperd tone. It sounds like it descends or ascends infinitely, like a sonic barbershop pole.

https://en.m.wikipedia.org/wiki/Shepard_tone

Is this what you're looking for?

[takato14]

no its not, its a filter, not a tone.

It sounds like this

https://dl.dropboxusercontent.com/u/34404748/noDel/BL_F/sound/wtfsound.wav

[TristanLuigi]

no its not, its a filter, not a tone.

It sounds like this

https://dl.dropboxusercontent.com/u/34404748/noDel/BL_F/sound/wtfsound.wav

Just sounds like a descending synth to me.

[BluetoothBoy]

Could you post the unfiltered sound for comparison?

[takato14]

Could you post the unfiltered sound for comparison?

no, it was taken from a song

If I could post the unfiltered sound I wouldn't be asking what filter it is

and no, its not a "descending synth", look at the Spectrogram, those curves are clearly made with a post processing algorithm that's using square-root functions

[BluetoothBoy]

Are you sure it's not just a layered LFO then? It wouldn't be that hard to do... If it's taken from a song, you can't really assume that much unless it's pretty obvious.

[TristanLuigi]

Well, I can't tell you what it's called, but I tried to make a cleaner version:



http://www.mediafire.com/download/v3ut58afbiak6b9/takato.zip

It comes with 3 versions: clean, noisy, and mixed. You might want to process it a little to get it to where you want, but there's the base sound. As it turns out, drawing a sound and then converting that spectrogram into a sound is a very good way to synth stuff. I used Paint.NET with an equation renderer and then Coagula to convert to a sound. Turned out great, if I say so myself.

EDIT: Help I'm having too much fun with this :(

[takato14]

Are you sure it's not just a layered LFO then? It wouldn't be that hard to do... If it's taken from a song, you can't really assume that much unless it's pretty obvious.

fair enough but I was unable to reproduce it with Audacity's LFO plugin, it only has the sine waveform, that's a ramp or something

could try a different program i suppose

[BluetoothBoy]

fair enough but I was unable to reproduce it with Audacity's LFO plugin, it only has the sine waveform, that's a ramp or something

could try a different program i suppose

You'd probably want to use a saw down wave over a long period adjusting the filter effect (band pass, maybe?) and then a long wave slowly adjusting the rate at which the saw slopes. That should give you your square root/bezier style curves. However, Audacity isn't the best program to do this in, as you can't edit effects/filters after you've applied them.

Well, I can't tell you what it's called, but I tried to make a cleaner version:



http://www.mediafire.com/download/v3ut58afbiak6b9/takato.zip

It comes with 3 versions: clean, noisy, and mixed. You might want to process it a little to get it to where you want, but there's the base sound. As it turns out, drawing a sound and then converting that spectrogram into a sound is a very good way to synth stuff. I used Paint.NET with an equation renderer and then Coagula to convert to a sound. Turned out great, if I say so myself.

EDIT: Help I'm having too much fun with this :(

Interesting, I'll have to give drawing sounds a try sometime.