KVR Audio

Sepheritoh · Post by **Sepheritoh** » Mon Sep 05, 2005 9:05 pm

Midiworks wrote:wrong track, epheritoh.
Wormhelmet is right.

@play
You are fine.

He said exactly what I said, but thanks anyway.

Wormhelmet · Post by **Wormhelmet** » Mon Sep 05, 2005 9:17 pm

I've been thinking about getting the UA25 myself, but I want to be sure it has lower latency than my US428. I'm sure it does, because it's newer, but my US428 will only go to 256 samples. That's 6 ms latency. pretty low and usable for live guitar playing through a plugin, but I want to go to about 128 samples or about 3.2 ms latency. I think the UA25 would do it.

Midiworks · Post by **Midiworks** » Mon Sep 05, 2005 9:32 pm

Sepheritoh wrote:
Midiworks wrote:wrong track, epheritoh.
Wormhelmet is right.

@play
You are fine.
He said exactly what I said, but thanks anyway.

Sorry, then I have missunderstood you.

heeb · Post by **heeb** » Mon Sep 05, 2005 10:07 pm

DI:

one of the problems with an input impedance that is too low, is that the guitar (except for maybe active guitars, like with EMG pickups) loses its higher frequencies. The lower the input impedance, the more current flows from the guitar to the input, and the higher frequencies are the first to suffer from that. Also sustain will suffer for that same reason: the lower the input impedance, the more string energy will flow from the string to the device that the guitar is connected to, and the string resonance will therefore die down sooner. Ideal would be an infinitely high input impedance. The input impedance of a tube circuit can be very high, by the way (also FETs have a very high input impedance).

Heeb.

Edit: the volume pot in your guitar has the same effect! If its impedance is too low, treble & sustain will suffer.

CatBoy · Post by **CatBoy** » Tue Sep 06, 2005 12:55 am

hey midi,
can the speaker simulation be turned off in this software?
I have a friend that cant afford a Bogner but likes what he heard on your sound page.
Have you tried running your sim thru a poweramp/cab setup for live use?

Peace

SleepyP · Post by **SleepyP** » Tue Sep 06, 2005 1:20 am

hey Midiworks, how long has this epic been going on on KVR? like a couple years now? hats off to ya for keeping it running for so long

Sascha Franck · Post by **Sascha Franck** » Tue Sep 06, 2005 9:47 am

Sepheritoh wrote: He said exactly what I said, but thanks anyway.

No, you were talking about a D.I. box when a load box was meant. A fundamental difference.

As heeb said, D.I. boxes are used to change your guitars impedance from hi to low. All passive pickups are high impendance ones, so for passive guitars, such a thing is required when you run them straight into a console or soundcard.

These days, a lot of soundcards feature dedicated instrument inputs, sometimes they're even labeled "hi-z". Those should be suitable.

Midiworks · Post by **Midiworks** » Tue Sep 06, 2005 10:03 am

Midiworks · Post by **Midiworks** » Tue Sep 06, 2005 10:07 am

CatBoy wrote:hey midi,
can the speaker simulation be turned off in this software?
I have a friend that cant afford a Bogner but likes what he heard on your sound page.
Have you tried running your sim thru a poweramp/cab setup for live use?

Peace

Interesting idea...
But I doubt you can get the level needed to drive the speaker from Pc... but maybe... I dont know...

I have no attention atm to add an cab on/off switch, sorry.

jens · Post by **jens** » Tue Sep 06, 2005 10:10 am

Sascha Franck wrote:
Sepheritoh wrote: He said exactly what I said, but thanks anyway.
No, you were talking about a D.I. box when a load box was meant. A fundamental difference.

As heeb said, D.I. boxes are used to change your guitars impedance from hi to low. All passive pickups are high impendance ones, so for passive guitars, such a thing is required when you run them straight into a console or soundcard.

These days, a lot of soundcards feature dedicated instrument inputs, sometimes they're even labeled "hi-z". Those should be suitable.

leider immer noch völlig falsch...

http://www.2sound.de/artikel.php?artikel_id=27

translation: still completely on the wrong track...

DI-boxes turn an asymetric signal into a symetric one - that's neccessary for cancelling out noise when having long signal ways....

(a guitar signal is usually asymetric (even with active ones, Sascha

) - mixing desks can receive and give out symetric ones - however you need a third pole for it - hence the XLR-standard... )

heeb · Post by **heeb** » Tue Sep 06, 2005 10:24 am

jens wrote:
Sascha Franck wrote:
Sepheritoh wrote: He said exactly what I said, but thanks anyway.
No, you were talking about a D.I. box when a load box was meant. A fundamental difference.

As heeb said, D.I. boxes are used to change your guitars impedance from hi to low. All passive pickups are high impendance ones, so for passive guitars, such a thing is required when you run them straight into a console or soundcard.

These days, a lot of soundcards feature dedicated instrument inputs, sometimes they're even labeled "hi-z". Those should be suitable.
leider immer noch völlig falsch...

http://www.2sound.de/artikel.php?artikel_id=27

translation: still completely on the wrong track...

DI-boxes turn an asymetric signal into a symetric one - that's neccessary for cancelling out noise when having long signal ways....

(a guitar signal is usually asymetric (even with active ones, Sascha ) - mixing desks can receive and give out symetric ones - however you need a third pole for it - hence the XLR-standard... )

But this doesn't change the fact, that a high impedance DI input is way better suited for guitar than a low impedance input of e.g. a soundcard. The impedance *is* important, despite the fact that what you're telling is *also* true.

jens · Post by **jens** » Tue Sep 06, 2005 10:32 am

heeb wrote: But this doesn't change the fact, that a high impedance DI input is way better suited for guitar than a low impedance input of e.g. a soundcard. The impedance *is* important, despite the fact that what you're telling is *also* true.

so cars are beds because you can sleep in them?

heeb · Post by **heeb** » Tue Sep 06, 2005 10:41 am

jens wrote:
heeb wrote: But this doesn't change the fact, that a high impedance DI input is way better suited for guitar than a low impedance input of e.g. a soundcard. The impedance *is* important, despite the fact that what you're telling is *also* true.
so cars are beds because you can sleep in them?

I'm saying that a high impedance DI input has the additional advantage of having, well, a high impedance, which is good for guitar! What exactly is your problem with that? The fact that the article fails to mention this advantage, doesn't make it non-existent.

So a DI has *two*, not just one advantage:

1) symmetrical signal flow, as described in the article, which cancels out external noise;

- and -

2) higher impedance than e.g. a common soundcard input (my MindPrint A/D-D/A converter has 47 KOhms, good for e.g. synths and stuff, but way too low for passive e. guitars), which gives e.g. better high frequency response.

The one doesn't make the other less important.

Heeb.

multree · Post by **multree** » Tue Sep 06, 2005 10:44 am

actually you're all wrong... the D.I. Box was invented in 1948 by David Immerglück Sr. (who indeed is the father of CountingCrows' Mandoline player David Immerglück Jr.) and it's used to apply a BitteFickMichZöpfchen to a long-haired dude (or girl for that matter) - so you put your hair in the one end and out the other.... switch the ground lift and you will now be circling thru the air (held by your hair) making a great impression on the ladys (or boys)

so in short a D.I. Box is a: David Immerglück's Baumeling off (the Ceiling) - well and the X is just the version number cause it's the 10th reissue - an earlier version was indeed called D.I. BotC

so please shut your mouthes if you don't know what you're talking about

kilroy · Post by **kilroy** » Tue Sep 06, 2005 10:48 am

Whew...at last, a satisfactory explanation.

Guitar players, The soundclick MP3 demo page got updated !