Audio Analyzer - Data does not make sense

I am using the Audio Analyzer with two sound sensors. I have double checked that I have it wired according to the wiring diagram: https://www.dfrobot.com/wiki/index.php/ ... KU:DFR0126

The data does not have that much correspondence to the actual sound in the room. For example when playing this 20hz to 20,000hz demo: https://www.youtube.com/watch?v=qNf9nzvnd1k

I am seeing responses like this:

[0] = 61, [1] = 61, [2] = 57, [3] = 56, [4] = 50, [5] = 60, [6] = 59

and

[0] = 100, [1] = 174, [2] = 493, [3] = 466, [4] = 196, [5] = 203, [6] = 160

1) Is there anyway to increase the accuracy or test that it is accurate? It's seems like there is a lot of noise in the data.

2) What do the numbers represent? I am seeing numbers 0 to 1023.

3) I notice that when I delay between calls to Analyzer.ReadFreq() that it takes a really long time to respond to sound changes. For example if I am going from silence to noisy and then back to silence again the ReadFreq will continue to return data for a 10 seconds or more if I have to long a loop delay. Why does the delay between ReadFreq() calls change how responsive it is?

Thanks!