Kemper Profiler MK 2

[Orvillain]

Also, there are serious trade-off's with a high number of FFT bins (IE: high frequency resolution)

Generally speaking, the higher the frequency resolution, the lower the time resolution. You get temporal smearing artifacts.

It is an unavoidable facet of FFT and STFT processing.

You can also get leakage from one bin to another, depending on how you've configured your FFT window. EVen if you use a Blackman-Harris window to minimize the issue, it is always going to be present on some level.

You can do multi-resolution approaches, but they're expensive.

You can also weight the bins towards frequency bands that are more musically meaningful; this will enable you to reduce the bin count, while still processing the range of frequencies that you care about.


I recently wrote an FFT based processor to extract spectral features from audio, and this is a delicate balancing act and is very material dependent.

 

[dws2384]

Also, there are serious trade-off's with a high number of FFT bins (IE: high frequency resolution)

Generally speaking, the higher the frequency resolution, the lower the time resolution. You get temporal smearing artifacts.

It is an unavoidable facet of FFT and STFT processing.

You can also get leakage from one bin to another, depending on how you've configured your FFT window. EVen if you use a Blackman-Harris window to minimize the issue, it is always going to be present on some level.

You can do multi-resolution approaches, but they're expensive.

You can also weight the bins towards frequency bands that are more musically meaningful; this will enable you to reduce the bin count, while still processing the range of frequencies that you care about.


I recently wrote an FFT based processor to extract spectral features from audio, and this is a delicate balancing act and is very material dependent.

So what’s your wild guess on what 100k points means then?

It must be correlated to something similar to what they’re already doing since the mk2 captures will still play on Mk1 at lower resolution. To me that suggests the new process is similar but just has more data points?

 

[Orvillain]

So what’s your wild guess on what 100k points means then?

It must be correlated to something similar to what they’re already doing since the mk2 captures will still play on Mk1 at lower resolution. To me that suggests the new process is similar but just has more data points?

If I was to be ultra cynical, I'd say it could be some kind of summation of various areas or levels of detail, but I really don't know.

Ultimately, it really doesn't mean very much as a sentence.

One golden rule of marketing - you see big number, you mistrust big number. Someone put it there for a reason; to make you think a certain way.

 

[LP59]

So what’s your wild guess on what 100k points means then?

It must be correlated to something similar to what they’re already doing since the mk2 captures will still play on Mk1 at lower resolution.

This is a poorly worded marketing blurb. There is no "must be correlated" about it. You're taking a microscope to something that was never meant to have any meaning in the first place.

 

[Chocol8]

So what’s your wild guess on what 100k points means then?

Well, it seems to be intentionally deceptive, so my not so wild guess is that it means the person behind that statement is not the worlds most honest salesman.

 

[dws2384]

Ultimately, it really doesn't mean very much as a sentence.

This is a poorly worded marketing blurb. There is no "must be correlated" about it. You're taking a microscope to something that was never meant to have any meaning in the first place.

Well, it seems to be intentionally deceptive, so my not so wild guess is that it means the person behind that statement is not the worlds most honest salesman.

Sounds promising! Can’t wait!

 

[Jarick]

Could be 100k spread across multiple measurements that are used to train the AI model and not the output file.

 

[OneEng]

FFTs don’t inherently require powers of two—radix-2 FFTs do for maximal speed
Mixed-radix and Bluestein’s algorithms let you handle arbitrary lengths like 1000 with only a small performance overhead.

True, and thanks for the clarification. I guess I have just been doing it for speed's sake. Certainly the one I was forced to write in college only worked with radix of 2. The ones I have used in libraries also prefer it, but as you say today's FFT libraries can handle other lengths.

Could be 100k spread across multiple measurements that are used to train the AI model and not the output file.

It's hard to say. I suspect (but don't know) the following:

1) The new algorithm will show improvement over the old. It may reach near parity with NAM.
2) It will likely be done predominantly on the PC.
3) I am hoping that they rid themselves of the "refinement" steps and make it more automated.

 

[TubeStack]

I can’t wait to make a Profile of a Mk2 Kemper Profile using my Mk1 Kemper and it sounds IDENTICAL to the Mk2 Profile!

 

[molul]

Isn't mk2 already available? Has nobody made a profile with it and compared to mk1 for science yet?

 

[Chocol8]

Isn't mk2 already available? Has nobody made a profile with it and compared to mk1 for science yet?

The hardware is available, but the software is coming SOON.

 

[BenIfin]

Isn't mk2 already available? Has nobody made a profile with it and compared to mk1 for science yet?

Yep. But as of now, Static-Legacy and Liquid Profiles made with a MK1 or a MK2 are %100 perfectly identical.

When the new profiling algorithm FW for MK2 is released, that's when the rubber will hit the road as they say.

It could be days / weeks / months away ?

 

[molul]

The hardware is available, but the software is coming SOON.

Wow, didn't know that. Then what does mk2 actually provide now that mk1 didn't have? More effects blocks?

 

[Chocol8]

Wow, didn't know that. Then what does mk2 actually provide now that mk1 didn't have? More effects blocks?

Less green on the exterior.

 

[Lysander]

The hardware is available, but the software is coming SOON.

 

[Lysander]

Wow, didn't know that. Then what does mk2 actually provide now that mk1 didn't have? More effects blocks?

Boots a tad faster too.

 

[OneEng]

Wow, didn't know that. Then what does mk2 actually provide now that mk1 didn't have? More effects blocks?

Boots considerably faster, and while it does have more effect blocks, the added blocks are static. You either turn them on, or not and they are what they are. You can't swap them out thus the terminology "fixed effect blocks".

.... and because the DSP is the same, I would assume that these blocks could just as easily be added to the MK1.

 

[Karl Houseknecht]

.... and because the DSP is the same, I would assume that these blocks could just as easily be added to the MK1.

And from what I can tell from the video, they are stripped down versions of the originals in some cases.

Can't move them? What is this? 2003?

 

[Lysander]

Can't move them? What is this? 2003?

Hush! You'll make GT-1000 cry!

 

[LP59]

Wow, didn't know that. Then what does mk2 actually provide now that mk1 didn't have? More effects blocks?

It has more effects blocks, but these new effects are limited. There are only a few effects available, mostly ones that use little cpu, and they are simplified, both in terms of what they can do and where they can go.

Also, the boot times are faster for the toaster. Stage boot times are about the same though.

I doubt anybody is rushing out to replace their Mk1 with a Mk2 at this point.