usb audio interface

[david12]

Hello,

I need to make some automated evaluations of audio input and output measures of several sound cards and mp3 players.

Are you aware of a good enough USB audio interface that I could use to do this?

Regards,
David

 

[nightanole]

M-AUDIO - MobilePre - Record Music with Your Computer

they make one higher if you need better

If you need higher rez but just single channel check out their transit

http://www.m-audio.com/products/en_us/Transit.html

 

[planet10]

You will be further ahead looking at Firewire interfaces. I can recommend this one from personal experience:

EDIROL FA-66 24Bit/192kHz FireWire Audio Capture

[IMGDEAD]http://www.roland.com/products/com/FA-66/images/top_M.jpg[/IMGDEAD]

dave

 

[david12]

Thanks for the answers.

However, these models have standard specifications:
input dynamic range: 100dB (typical, -60dB input, A-weighted)
signal-to-noise ratio: 100dB (typical, A-weighted)

In order to evaluate the specifications of other sounds cards and mp3 players,
I would need to have much higher measures than these standard ones.

Is there any other product that I could use?

Regards,
David

 

[nightanole]

DSO-2150 USB PC Based Oscilloscope • DIY Audio Projects Forum

Soundcard Interface

 

[richiem]

If your PC has the Intel High Definition Audio chipset as part of the main board, you can use the ARTA software for fairly high-res spectrum analysis and frequency response tests -- 24-bit and 96kHz as minimums. You can Google ARTA. It has a full-feature demo mode.

 

[david12]

Thanks for the info!

 

[luvdunhill]

You will be further ahead looking at Firewire interfaces. I can recommend this one from personal experience:

EDIROL FA-66 24Bit/192kHz FireWire Audio Capture

[IMGDEAD]http://www.roland.com/products/com/FA-66/images/top_M.jpg[/IMGDEAD]

dave

Dave, can you post basline RMAA measurements of this unit, with no DUT connected?

From my tests, it doesn't perform as well as say a E-MU 0404 USB.

 

[ramallo]

For me, the best in USB

USBPre 2 Microphone Interface for Computer Audio | Sound Devices, LLC

[IMGDEAD]https://www.sounddevices.com/images/products/usbpre2-425px.jpg[/IMGDEAD]

 

[nightanole]

Is someone says "DUT test" or "DUT testing" or "what DUT are you testing" i will reach across the internet with my soldering iron.

Sorry i just have a test at work that literally says "Please do not touch the DUT testing please".

Ok some one else can vent about hot water heaters now.

 

[planet10]

Dave, can you post basline RMAA measurements of this unit, with no DUT connected?

From my tests, it doesn't perform as well as say a E-MU 0404 USB.

If i knew what you were asking i might be able to respond (but the answer is probably no)

Does the EMU fo 24/192?

dave

 

[luvdunhill]

I can post measurements later. Yes it does and can even do 32 bit measurements. I think you'll find the noise floor is about 10 dB lower as well, but I'd have to verify that with my tests.

 

[planet10]

Yes it does (24/192) and can even do 32 bit measurements.

Not in practise (at least for me): "Macintosh analog operation up to 96kHz and digital operation up to 48kHz only at this time."

It does 32 bit internal processing with 24 bit I/O. I expect that that is pretty common as it is the most sensible way to use the 32bit wide processors.

dave

 

[luvdunhill]

I have run tests with 32-bit I/O I can post. Yeah, if the drivers aren't up to snuff on the Mac, I'd look elsewhere.

 

[luvdunhill]

So, the Edirol uses CS5340 ADC and AK4385 DAC.

The E-MU 0404 uses AK5385A ADC and AK4396 DAC

The specs just looking at the datasheet shows what's theoretically possible.

E-MU 0404 in 32/96

E-MU 0404 in 24/96

Edirol FA66 (I cannot find my graphs for this one, but these are within +-0.2dB of what I remember, despite the sampling rate difference: