Table 1: Passing rate among VRNG, DVRNG, and pure sound.

WebcamIpcamXiangSheng2Webcam2Ipcam2XiangShengPure sound

Frequency0.99000.99000.59001.00000.98001.00000.58
Block frequency1.00001.00000.60000.99000.99001.00000
Cumulative sums0.99000.98500.58501.00000.97501.00000.16
Runs0.99000.99000.30001.00000.99001.00000
Longest-run-of-ones0.99000.99000.58001.00000.98001.00000
Binary matrix rank0.99000.98001.00000.99001.00001.00000
FFT (Fourier)1.00001.00001.00001.00001.00001.00000
Nonoverlapping template0.98860.98720.92950.98820.98970.98480
Overlapping template 0.98000.98000.70000.99000.99001.00000
Universal statistical1.00001.00000.00001.00001.00001.00000
Approximate entropy0.98000.99000.78000.99001.00001.00000
The random excursions0.98531.00001.00001.00001.00001.00000
The random excursions variant1.00001.00001.00000.97690.98991.00000
The serial0.99000.98000.85000.99500.99501.00000
The linear complexity0.98000.99001.00000.97000.97001.00000

Average of above0.99030.99080.72760.99270.99000.99900.0493
Minimum of above0.98000.98000.00000.97000.97000.98480