I hooked up my phone via USB cable to my DAC in my main system to run these Audio Check tests and learned quite a bit.
Some of the more interesting tests were
- Audiometric (Hearing Loss) Test (125-8,000Hz)
- Low Frequency Sound Localization and Subwoofer Imaging Test
- Aliasing Test
- Dynamic Range, Dithering and Noise Shaping
- LEDR Imaging Audio Test
The set of Blind Tests were engaging and educational. In those tests, I can reliability detect 0.5dB in volume change, hear differences up to 15kHz, detect at least 5c of pitch variability, and hear 1ms of timing difference. I couldn’t reliably distinguish absolute polarity or, oddly, distinguish 8/16 bit samples.
I’m quite curious about the results in my second system, so I plan to run some of the tests there. I hypothesize that some of my results would change based on performance and characteristics of the system components.