Recent content by JanRSmit

John, i am currently away for a short holiday. But while in train a short feedback after i did reset rew and redid level calibration from null. And did some tests. The test results are more consistent, from what i noticed looking at levels (y axis in measurement panel) the level calib was way...

Yes John, i understand it is clipping somewhere, that was my question, as there was no sign of clipping on my Babyface, so where is it clipping? First the voltage level calibration with BabyfacePro settings out is 0dB, in is +4dB: REW-Babyface calibration is quite accurate down to low values...

THis morning i tested again. First with White Noise (WN) i started at 100mV and in steps of 100mV increase. At 300mV, when hit start it shows an error box: The thing that struck me is the 143 dB SPL, but in the panel i set "No mic" Hit Yes and here a snapshot during running: Headroom is red...

Interesting, so i first set the input or output of the Babyface to higher values, that did not alter the output. Then i increased to REW level, i went to 290mV (2x145mV), and i got a funny TD+N: I ran this test twice, no difference. When play back the res on speakers of laptop, i only vaguely...

Is this also true when using asio?

Oops, big mistake, post #288, thanks for pointing.

Thanks FSAF, itcwas your post #244 that made me test with increasing the ir duration. Will do your suggestion as well, to know also that limit. The real first test wil be the possible distortion of cables.

I increased the IR duration in steps of 100msec, and from 800msec the TD+N stayed the same, being without humps, more or less the avarage of the noise-floor: 96k 48k 96k no filter: The above rsults were with ASIO buffer is 2048, below a measurement with ASIO buffer set to 1024: So thusfar...

When i started playing with fsaf the ir length was more, but gave errors. Will try again , will also check the asio buffer.

Here some measurments this morning: 44k1 48kHz: 88k2: Now rush off to a meeting.

So the question is whether the 48kHz is the right outcome, and thus the 96 and 192 are wrong. Or the RMEdevice and its asio driver is not good, or REW has issues. If it is limited to 44.1 kHz it is of limited value. I can test focusrite 2i2 2nd gen and 18i20 3d gen , stay tuned.

I tested the filtering option in FSAF panel: 48kHz: 96kHz: 192kHz: The 48kHz appears to have the lowest noise-floor, but the TD+N shows a bump with the shape of the fundamental. The 96 and 192kHz do not show that hump. How to find out the cause? A sweep with 48kHz does not show any anomality:

Here a screencopy of the FSAF setting:

Thanks to DCIBEL i am busy getting FSAF to work. I am still digesting all the previous posts in this thread. The first objective is to become proficient in the functionality, and to get a stable and reproducable result. My REW FSAF rig is a w11 laptop via ASIO connected to a RME Babyface Pro...

This examplifies why i am interested in fsaf.