[lan]

Anybody use the new version yet? Let's see some numbers

Some new features:

- A new test of intermodulation distortion has been added. From RMAA 5.1 the common IMD test uses a standard SMPTE test signal. In a new Swept sine IMD test, we use a set of 2 harmonics with a frequency difference of 1 kHz (CCIF standard), sweeping the whole audible range of frequencies. Thus, the dependence of intermodulation from frequency is tested. This test allows detecting high-frequency intermodulations that are specific to internal sample rate convertion (SRC) algorithms of a sound card.

- An auto-normalize function has been added for more accurate measurements when exact matching of I/O levels is impossible. Also this feature addresses the problem of cheated measurements with lowered input levels set for reporting low noise levels.

- In acoustics testing mode, we have added: separate measurement of 2-nd and 3-rd harmonics; normalization of distortion level to the input signal level; a new THD-vs-frequency test using a set of fading-in harmonics with different frequencies.

 

[amol]

My results with the new RMAA

http://www.geocities.com/amol2003/Re...volution54.htm

 

[VitaminJosh]

The latest MME drivers for CardDeluxe suck. You have to set the control panel to 16/44.1, 24/44.1, 24/96, etc otherwise it will automaticly resample to 96. Six foot cable used in both tests, Canare Star Quad. One balanced, one unbalanced.

DAL CardDeluxe unbalanced
DAL CardDeluxe balanced

 

[amol]

Hmm..that's very weird. Those stereo crosstalk results are very poor indeed.

 

[Glassman]

due to the cable of course, that's okay, what's weird is the distortion graph, so wavy..

 

[Mr.Radar]

If anyone is interested here is a test of the analog outputs on my NF7-S to the Wolfson DAC on the Chaintech and here is a test of my GPX PCDP. Both of those were done with the ADC on the Chaintech so I think that's the limiting factor here (I know that other tests have been done with the DAC on the AV-710 that come out to 99dB SNR while mine only show 84.1dB)

 

[VitaminJosh]

Quote:

Originally Posted by amol Hmm..that's very weird. Those stereo crosstalk results are very poor indeed.

Throwing together a 5" unbalanced cable out of Belden 1505F and using HOSA Y-adapters, the stereo crosstalk is -96 to -97dB.

Quote:

Originally Posted by Glassman due to the cable of course, that's okay, what's weird is the distortion graph, so wavy..

I always wondered about that... What could be the possible causes?