Hi Peter
When I said "Even 44/16 MQA albums work." in an earlier post I only meant the files played OK I recognized then that they just upsampled and did not unfold.
I have done more tests by playing tracks using my DAC into soundcard and generating FFT spectrums and averaging about 10s music. With no upsampling applied by XXHE. Comparing with decoding on and off. I can quite clearly see if they unfold to get data above 22KHz
Results are attached, my conclusions relating to Tidal albums so far are:-
48/24 MQA all decode correctly
44/24 MQA only 1 found so far that decodes this one from 2L.
44/16 MQA not found any that unfold.
Next I will try measuring some 44/24 files by playing from the Tidal App .
Regards
Colin