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  Topic Review (Newest First)
07-02-17 03:30 PM
roberto.borges
Re: REW Sound Card Database

Quote:
roberto.borges wrote: View Post
Hi...

Starting with:

Leson ML70 (first tests while expecting EMC8000)

Audio interface: Behringer UMC202HD

Behringer ECM 8000

REW 5.18

S.O. W10 64

Regards,
Roberto
+ RadioShack 33-4050
07-02-17 07:33 AM
roberto.borges
Re: REW Sound Card Database

Hi...

Starting with:

Leson ML70 (first tests while expecting EMC8000)

Audio interface: Behringer UMC202HD

Behringer ECM 8000

REW 5.18

S.O. W10 64

Regards,
Roberto
02-01-16 02:55 AM
BloomBloom
Re: REW Sound Card Database

Nice,
thank you!
01-31-16 07:33 PM
Wayne A. Pflughaupt
Re: REW Sound Card Database


The TASCAM will work fine. You don’t need a calibrated a mic for timing reference. The cheapest thing you can find will do.

Regards,
Wayne

01-31-16 06:30 PM
BloomBloom
Re: REW Sound Card Database

Quote:
Wayne A. Pflughaupt wrote: View Post

Everything I’ve seen says you can’t do timing with a USB mic – sorry.

Regards,
Wayne

Thanks Wayne.
I have a Tascam US-122Mk2 http://tascam.com/product/us-122mkii/ - if I got a normal calibrated phantom powered mic - do you think I could do the timed reference with REW? Or would i need a new interface too...?
01-31-16 06:19 PM
Wayne A. Pflughaupt
Re: REW Sound Card Database


Everything I’ve seen says you can’t do timing with a USB mic – sorry.

Regards,
Wayne

01-31-16 04:43 PM
BloomBloom
Re: REW Sound Card Database

Quote:
Wayne A. Pflughaupt wrote: View Post

An internet search on “audio interface usb input” gets nothing, even with interfaces costing thousands of dollars, so I doubt such a creature exists. Makes sense when you think about it. The whole purpose of a USB mic is to preclude the necessity of an interface.

Regards,
Wayne

Thanks Wayne,
So is there a way for me to use my USB unik with a timing reference?
My current 'sound card' is the on board one that came with the gigabyte mother board?

Thank you, hard being a Noob
01-31-16 04:37 PM
Wayne A. Pflughaupt
Re: REW Sound Card Database


An internet search on “audio interface usb input” gets nothing, even with interfaces costing thousands of dollars, so I doubt such a creature exists. Makes sense when you think about it. The whole purpose of a USB mic is to preclude the necessity of an interface.

Regards,
Wayne

01-31-16 03:50 PM
BloomBloom
Re: REW Sound Card Database

Hello People,
I'm looking for a USB interface that would support loop back/timing with REW and works with the Umik1 mic which is USB too. The cheaper the better, I only want it to do the timing with REW - not recording anything

Thank you!
01-21-16 11:34 PM
gazoink
Re: REW Sound Card Database

Here's a bit of test results, line out to line in only. I'll get to the mic pre later.

The L line out was connected directly to the L line in. Output knob was all the way clockwise, and the input knob was adjusted for unity gain (equal levels in and out, per REW's level meters).

See image, posting tabular data here is a pain.

Note that the OS X measurements are different. The big difference is line output level. Nothing was physically changed on the box itself. All voltage measurements were made with a physical volt meter at the output terminals. Sampling frequency was 44.1 in all cases. Note the OS X produced levels 5dB lower than Win 7 for the same REW generator settings. Distortion measured higher with more harmonic content. We're not dealing with an awful lot, though.

Another OS X phenomenon was a periodic "glitch" that seemed to momentarily bump the noise floor up, then go away.

OS X routing was tried several ways, direct with sound preferences, through Lineout and Soundflower, and by creating a new aggregate device for the Presonus. The Lineout/Soundflower method didn't work at all, the other methods produced identical results.

At this point I don't have an idea why it doesn't work as well on OS X. Anyone have a theory?

The other observation is that the system seems to mush into nonlinear behavior slowly between -10dBFS and -6dBFS (I didn't go higher) rather than remain clean until clipping. This could be a function of the Presonus "Class A" input, but I couldn't pin it down.

I'll look at noise and response as well as the mic input another time.
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