Recent content by phofman

You can use newer JDK, look at e.g. https://www.avnirvana.com/threads/rew-linux-installation.6711/ .

I just tested beta 100 and runs OK on my amd64 with java 21: Do you have correct path to the launcher jar (e.g. REW_DIR/.install4j/launcherd9d2fef3.jar in my case)? Your error looks like java cannot find the main REW class which is in that jar: pavel@precision:~$ jar tvf...

Unfortunately the Wayland support in java has still a long way to go https://openjdk.org/projects/wakefield/ https://wiki.openjdk.org/display/wakefield/Work+breakdown

Switch your desktop to X11 and check if it helps. Just google out the method (it should be at login screen).

Maybe your system switched from X11 to Wayland? What does echo "$XDG_SESSION_TYPE" say ?

IMHO USB is way more compatible with current and future host devices than firewire. Technically both interfaces are just transferring data anyway, good audio devices have conversion master clocks on their sides. Well engineered (especially multichannel) USB2 highspeed devices use the packet...

Yes, if the ADC distortion component to the combined distortion is negligible, compensating (i.e. adding distortions of opposite phase) on the DAC side only works OK. The problem is when the ADC distortion is not negligible, while being also compensated on the DAC/generator side . Then the...

Separating DAC and ADC distortions from the combined loopback measurement is by principle not trivial. The standard way is using a steep notch filter on the ADC side which suppresses the DAC distortions before the AD conversion. REW supports measuring the notch filter params and compensating its...

@redmountain : how is clock master determined in your "firewire stream"?

@redmountain : what REW buffer size do you use?

But that's not related to some differential mode, but simply averaging the vector distortions of the two channels (each a bit different) improves the resultant distortion, statistically.

It's always perfect cosine to the fundamental sine, IMO just a different phase shift between the channels as that simple equation yields.

IIUC the subtraction can suppress only common-mode artefacts in both channels which is not harmonic distortion.

Maybe it's like this: sin(x) - sin(x-0.001) = 5.×10^-7 sin(x) + 0.001 cos(x) IIUC that 1mV subtracted signal is cos(x), i.e. phase shifted by pi/2. The channels are slightly phase shifted against each other at that frequency - to be expected for real-world HW, they cannot have identical...

Quite a few people use REW on linux with no major issues. Me - Mint Mate, Xorg. Since REW is plain java - do java GUI apps run OK on your installation? Do you have a reasonable set of fonts installed? Perhaps Wayland vs. Xorg?...