Frequency follower

[JoPo]

As said in the title, I looking for something that would convert frequency (pitch or sound main frequency) values into modulation signal...

I don't find any in VST format, so I just ask here if it is possible to build this with Mux modular... Cause I don't se how I could do !

Thanks for any info about any software (I've found some hardware, but... http://www.analoguesystems.co.uk/modules/rs30.htm OR http://www.matrixsynth.com/2014/03/poly ... -ff-1.html a bit expensive for just making some experiments...) in any format that could help me.

[pekbro]

There is a direct audio to modulation converter in MuLab/Mux,
also an Audio Envelope Follower.

-Cheers

[pljones]

By frequency follower, do you mean something that will analyse the incoming complex audio waveform, determine the fundamental frequency and output "something" to indicate that fundamental frequency? That's more like an Audio to MIDI Note Converter, for which VSTs do exist, I believe. Then the Note to Modulation Converter module gets you the modulator.

Or do you mean something else?

[JoPo]

By frequency follower, do you mean something that will analyse the incoming complex audio waveform, determine the fundamental frequency and output "something" to indicate that fundamental frequency?

Yep ! Exactly what I'm after.. But it's not really the midi note signal I want to get. I already have several stuff to achieve this.
It's more the way to get back which frequency in an audio signal has the most amplitude. The response would be an evolving frequency value, in herz. Just the same as when you are using a peak filter on a white noise, you're modulating its frequency cutoff, you can see, in a frequency analyser, a bump corresponding to the peak filter frequency value (when adding gain in the filter, of course and a hollow when you substract gain).

That's it ! A "thing" that output which frequency has the biggest amplitude in an audio signal ! So, it outputs a frequency value in hertz... With a certain width, of course.

It must be makable, a frequency analyser can show which frequency is the louder...

Do you think it exists on our planet ?

[urvieh]

it would be fantastic if mulab had such a module. i have tried to do so in the past. but i gave up. there isnt enough Q for the EQ and no special comb filter to extract such frequencies.
@jo please give us a frequency detection module

[pljones]

Ah, okay - so you want something that's doing all the work for MeldaProductions MAnalyzer but then outputting the frequency with the highest amplitude as a signal. If you look at the horizontal scale on MAnalyzer, you'll see it runs from 20Hz to 20KHz. You could have that as your 0.00 to 1.00 modulation scale... Maybe a paid version of MAnalyzer offers it - might be worth looking, if you've not checked there.

[JoPo]

You could have that as your 0.00 to 1.00 modulation

My dream ! But Manalyser is not able to output its frequency value ! It calculates the value, shows the value but doesn't output the value !

[pljones]

You could have that as your 0.00 to 1.00 modulation

My dream ! But Manalyser is not able to output its frequency value ! It calculates the value, shows the value but doesn't output the value !

Have you asked MeldaProductions about it?

[MuTools]

I assume that output value will have a delay cause frequency estimation is done using FFTs. Of course this introduces the complexity of using signals with different timing. Process delay compensation delays (automatic/manual) will be necessary.

[Michael L]

Perhaps using the Audio Gate to only pass audio above a threshold will provide the realtime 'signal' you need, and then you can use it?

[pljones]

I assume that output value will have a delay cause frequency estimation is done using FFTs. Of course this introduces the complexity of using signals with different timing. Process delay compensation delays (automatic/manual) will be necessary.

It would probably decay to random noise as the signal level drops to noise. Feed in audio noise, output a random value between 0 and 1; feed in a fixed tone, get out a fixed value. MAnalyzer has a huge number of configuration options and I don't have a clue about how it actually works .

[VariKusBrainZ]

There are plenty of frequency to midi converters, you could load one of those and convert the midi to modulation or whatever format you want within Mux

[JoPo]

I assume that output value will have a delay cause frequency estimation is done using FFTs. Of course this introduces the complexity of using signals with different timing. Process delay compensation delays (automatic/manual) will be necessary.

I knew about that when I asked for the same "thing" in my favorit audio plateform forum (http://scope.zone/ and the forum : http://forums.scopeusers.com/index.php)
But any delay is not a big deal when one knows its time. Of course, to play an instrument directly through that kind of processor is different.

Perhaps using the Audio Gate to only pass audio above a threshold will provide the realtime 'signal' you need, and then you can use it?

No because, I would only get back the information that the signal is above a certain value, even by filtering the gate input. I'd like to get which frequency value is the louder.

I MAnalyzer has a huge number of configuration options and I don't have a clue about how it actually works .

I don't think and I don't see how it would be able to output the value. Does it have got a dedicated output ? If it does, what kind of signal does it output ? Audio ? Midi ? OSC ? I believe that there is no other standard modulation signal all developers use for their devices ?

There are plenty of frequency to midi converters, you could load one of those and convert the midi to modulation or whatever format you want within Mux

That's right ! And I already use some of them. But it works mainly on monophonic audio signals, like a tuner, moreover, I use a tuner that outputs midi notes in real time, it's very convenient ! One can sing in a microphone and it converts the voice into midi signal. But it's not able to output which frequency is the louder in a complex, with several instruments, for instance, audio signal.

And I think it should be possible since any frequency analyser can show which frequency is the louder. If it can show it, that means he "knows" which frequency value is louder. It should just output this value in real time.

[pljones]

I don't think and I don't see how it would be able to output the value. Does it have got a dedicated output ? If it does, what kind of signal does it output ? Audio ? Midi ? OSC ? I believe that there is no other standard modulation signal all developers use for their devices ?

This is what I'm suggesting you ask Melda Productions. No, today MAnalyzer has no output. Melda may be able to change that. Try asking.

[JoPo]

I wanted to say that I've ask the same thing at Reaktor forum and someone gave me a good patch outputing the most loud frequency value of an audio signal... Here :
https://www.native-instruments.com/foru ... st-1603965

Of course... Reaktor needed....