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1

Tuesday, February 7th 2012, 12:00pm

SPDIF Higher bitrate.

Please make it handle 48k and ideally up to 24bit at 96k (or even 192k). I know that the end result will be 44.1k for most, but I prefer to work at 48k, and no I can't tell you why my ears aren't that golden but it just feels nicer to me, and I know a lot of studios prefer (or require) higher bitrates than 44.1k for tracking too.

mba

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2

Tuesday, February 7th 2012, 12:06pm

It's mandatory for interconnection with other gears.
By the way i asked a french user to make a test and it sounds ok in 96khz.
You hear a little bit more the "defaults" but it's not like with the pod (pro, xt..).
With the pod when you increase the sample rate you hear the artefacts, in 192khz it sounds terrible. It just shows the limit of the technic.
As i said, it seems to be ok for the kemper so i agree, 44, 48, 88, 96 would be fine.

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3

Tuesday, February 7th 2012, 12:52pm

CK has stated in an interview that the internal sampling rate of the KPA is much higher than 44.1Khz - so it should be possible theoretically. Plus there should not be any artefacts, like in the Pods. As the KPA has high quality components it should continue sounding great...
"Quote me... I dare ya!"

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4

Tuesday, February 7th 2012, 4:27pm

I agree. I also prefer 48kHz. We should have at least the option for 48kHz output through SPDIF since that's the standard (48kHz and 44kHz) and as mba said it's a must for interconnection with other gears.

Clawfinger

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5

Thursday, February 9th 2012, 8:34am

RE: SPDIF Higher bitrate.

Please make it handle 48k and ideally up to 24bit at 96k (or even 192k). I know that the end result will be 44.1k for most, but I prefer to work at 48k, and no I can't tell you why my ears aren't that golden but it just feels nicer to me, and I know a lot of studios prefer (or require) higher bitrates than 44.1k for tracking too.
That would be a really good feature. I've done extensive testing with DSP and Distortion and as soon as we got under 96KHz, it started to sound....digital. :)

6

Saturday, February 11th 2012, 2:34pm

It's mandatory for interconnection with other gears.
By the way i asked a french user to make a test and it sounds ok in 96khz.

Can you explain this further? What was the exact test?

CK

mba

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7

Saturday, February 11th 2012, 3:20pm

It's mandatory for interconnection with other gears.
By the way i asked a french user to make a test and it sounds ok in 96khz.

Can you explain this further? What was the exact test?

CK
I had a pod xt pro. When i tried to record the analog output at different sample rates the higher sounded the worst. It's seems that higher sample rates reveal some defaults/incoherences in the spectrum of the signal. In this case low sample rates help to hide artefacts. That was my guess.

At a time we supposed that the kemper was based on the same technology than the pod so i asked to a french user to record the analog output of his kemper in 44, 96 and 192khz. The signal is more clear more detailled but it does not sound worst by himself.
My guess is that the signal/processing is different and better.(perhaps it comes from the DA converters)

This post has been edited 1 times, last edit by "mba" (Feb 11th 2012, 3:26pm)


8

Saturday, February 11th 2012, 3:53pm

It's mandatory for interconnection with other gears.
By the way i asked a french user to make a test and it sounds ok in 96khz.

Can you explain this further? What was the exact test?

CK
I had a pod xt pro. When i tried to record the analog output at different sample rates the higher sounded the worst. It's seems that higher sample rates reveal some defaults/incoherences in the spectrum of the signal. In this case low sample rates help to hide artefacts. That was my guess.

At a time we supposed that the kemper was based on the same technology than the pod so i asked to a french user to record the analog output of his kemper in 44, 96 and 192khz. The signal is more clear more detailled but it does not sound worst by himself.
My guess is that the signal/processing is different and better.(perhaps it comes from the DA converters)
This is weird.
With well made equipment you should not notice any difference in sample rates.
Especially with digital guitar amps, that features a natural high end roll off by the speaker simulation.

CK

mba

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9

Saturday, February 11th 2012, 4:07pm

It's just my experience.
I'm surprised that you find it weird specially when we are talking about digital world.
Aliasing and artefacts are something well known in digital world or you have to explain me why you do oversampling?
http://en.wikipedia.org/wiki/Oversampling

So i don't see anything weird when you get a bad sound of a digital gear.(and we have a long history and lot of examples in guitar world of bad sounds)
By the way i heard that with some cheap audio interfaces you don't get the same recording result with different sample rates....
Anyway. ;)

Is it in your plans to make different sample rates available for spdif? (i think that's the question)

10

Saturday, February 11th 2012, 5:36pm

It's mandatory for interconnection with other gears.
By the way i asked a french user to make a test and it sounds ok in 96khz.

Can you explain this further? What was the exact test?

CK
I had a pod xt pro. When i tried to record the analog output at different sample rates the higher sounded the worst. It's seems that higher sample rates reveal some defaults/incoherences in the spectrum of the signal. In this case low sample rates help to hide artefacts. That was my guess.

At a time we supposed that the kemper was based on the same technology than the pod so i asked to a french user to record the analog output of his kemper in 44, 96 and 192khz. The signal is more clear more detailled but it does not sound worst by himself.
My guess is that the signal/processing is different and better.(perhaps it comes from the DA converters)



Probably in that case the issue was produced by your recording device not the source. I try to avoid using analog outputs on modelers for recording. I does not make sense to me using analog outputs when connecting 2 digital devices together. You will always lose quality and issues might appear. Thats why we need more out put sample rates. With spdif I would say at least 44k and 48k. Thats the standard for spdif.