LEFT frequency = RIGHT frequency + 4 Hz ; is it please possible ?

[amka]

Hi,

Is it please possible to change the frequency of a sound on this way :

LEFT frequency = RIGHT frequency + 4 Hz ?

Does exist a mean to do that ?

NB : I usually use Ardour on linux, so why not a plugin ; but other means are wellcome !

Thanks,

Amer

[CinningBao]

Weird question, but it depends what you mean.

If you literally want to ADD 4khz to the entire signal you'll need to use a frequency shifter. This is not a pitch shifter which (in principle) multiplies the frequencies in the signal so they maintain a numerical relationship.

A frequency shifter will add your-chosen-value to all the harmonic content in a signal. So, you'll want a frequency shifter plugin you can insert on one side of your channel. I'm not sure how the routing works in Ardour but I'd be surprised if you couldn't split a channel into 2 mono signal, to your effect thing on one side, then bring them back to a stereo channel (if that's what you want).

Hope some of that is useful!

[kvaca]

Hi,

Is it please possible to change the frequency of a sound on this way :

LEFT frequency = RIGHT frequency + 4 Hz ?

Does exist a mean to do that ?

NB : I usually use Ardour on linux, so why not a plugin ; but other means are wellcome !

Thanks,

Amer

any frequency shifter plugin with independent channel processing can do it /Melda for instance/

[kPere]

Yeah, I would head to Melda for frequency shifter as well.

Very curious, why you ask?

[Andreya_Autumn]

Also super curious what the use case is! You trying to make a mix that'll subliminally condition the listener to tilt their head sideways?!

[amka]

Hi everyone,

My purpose is making some binaural beats that's in two words sound with a little difference of frequency left-right (with a common source). The difference don't need to be always 4Hz, I think it's only an average.

Perhaps using some special pitch plugin is simplier ? I don't find any Melda plugin in Ardour.

Best regards

[kPere]

That is usually done using pitch shifting, instead of frequency shift. Known as haas effect. Some delay works as well.

Would be actually interested to hear the result doing it your way.

[Ah_Dziz]

Single sideband modulator/ frequency modulator. There are lots that use various methods. All of them will make for some nice beating. You can use the free Melda Frequency shifter or grab the awesome free freq echo from Valhalla (turn the delay and feedback all the way down and use the wet signal only). If you have a data flow DSP thing like reaktor or max then you can get really specific for your use case, but I'd imagine setting up the stereo routing will be more time consuming than getting the plugin and setting it up.

[skwrl]

That is usually done using pitch shifting, instead of frequency shift. Known as haas effect. Some delay works as well.

Would be actually interested to hear the result doing it your way.

Just wanted to pipe in, here. The Haas effect has to do with short delay times between two sounds across the stereo panorama, but has nothing to do with pitch/frequency. It is also called the “Precedence Effect” and is a psychoacoustic phenomenon where the two sounds are effectively heard by the listener as a single sound. The delay time between the two sounds must be less than 40ms and the first sound to play will determine the location the overall sound is heard from.

A great rundown can be found here: https://producelikeapro.com/blog/haas-effect/amp/

[kPere]

That is usually done using pitch shifting, instead of frequency shift. Known as haas effect. Some delay works as well.

Would be actually interested to hear the result doing it your way.

Just wanted to pipe in, here. The Haas effect has to do with short delay times between two sounds across the stereo panorama, but has nothing to do with pitch/frequency. It is also called the “Precedence Effect” and is a psychoacoustic phenomenon where the two sounds are effectively heard by the listener as a single sound. The delay time between the two sounds must be less than 40ms and the first sound to play will determine the location the overall sound is heard from.

A great rundown can be found here: https://producelikeapro.com/blog/haas-effect/amp/

Mea culpa. I associated the two, since I often use two of those techniques for some stereo and thickening trickery.

[MBCDs]

I messed around with something similar last year. I used the Reaper JS tone generator to make one frequency and panned it left. Then I used another tone generator to a different frequency (I tried 4 to 7 Hz more) and panned it right. I did get a beating frequency while listening with headphones and messed around with different tones such as sine, triangle and square waves. It did leave me a bit scrambled in the brain and I haven't messed with it since. I would use some caution with it.

[MacSpares]

Chiming in late here - like it was said earlier, this is an odd question, because a 4hz difference across the entire spectrum will not create a linear effect. Like it was said before, a frequency shifter is what you would need to achieve this, but a 4hz difference at 60hz is a magnitude different than 4hz at (only) 1000hz. If you applied this to a full band piece of audio, you have have extremely skewed phase in the low end, but only marginally different the higher the frequency content.

Which..maybe that's the point?

[MBCDs]

The OP was probably seeing if there was a plugin to make binaural beats. I bought a Hemi Sync recording a long time ago and I was trying to recreate that with tone generators. There is a bunch of You Tube videos about binaural beats also.