I never said, "Proven." I said, "Shown." In natural science, based on the scientific method and deductive logic, it is impossible to prove. You can only prove what something is not.
Here is a citation:
Audibility of a CD-Standard A/D/A Loop Inserted into High-Resolution Audio Playback". E. Brad Meyer and David R. Moran. JAES 55(9) September 2007.
Published study showing human ears cannot tell the two sources apart.
Quote from the paper:
Claims both published and anecdotal are regularly made for audibly superior sound quality for two-channel audio encoded with longer word lengths and/or at higher sampling rates than the 16-bit/44.1-kHz CD standard. The authors report on a series of double-blind tests comparing the analog output of high-resolution players playing high-resolution recordings with the same signal passed through a 16-bit/44.1-kHz "bottleneck." The tests were conducted for over a year using different systems and a variety of subjects. The systems included expensive professional monitors and one high-end system with electrostatic loudspeakers and expensive components and cables. The subjects included professional recording engineers, students in a university recording program, and dedicated audiophiles. The test results show that the CD-quality A/D/A loop was undetectable at normal-to-loud listening levels, by any of the subjects, on any of the playback systems. The noise of the CD-quality loop was audible only at very elevated levels.
No need to be rude to try to impose your opinion onto others. Take your own advice. Just because you believe it is so doesn't make it so.
Originally Posted by Yikes
Ya sure proven in DBT, move it over to Sound Science where such talk belongs.
I've compared the output of DSD A/D converters to the output of PCM A/D converters both being fed from the session tapes of original RCA Living Stereo recordings on an exceptional Studio Rig (Read not the typical studio crap) and you'd have to be deaf to not hear the difference. You can quote some fictitious DBT, but just cause someone somewhere claims so, doesn't make it so.