WaveWindow for Android

11 things about WaveWindow

1. Of course, the display will not change at all if WaveWindow cannot find a 'musical note', so if the display seems to have 'locked up' make sure you are not in Capture mode.

2. Consider what happens when the waveform being displayed does not repeat precisely at the fixed interval... The waveform can appear to 'travel' across the display, either backward or forward.

3. The sync mode employed here delays the incoming signal until a positive-going, zero-crossing is found.

4. The figures thus produced can actually be used to determine the frequency of the input, by looking at the resultant pattern, and comparing it to a table of known patterns for given frequency ratios.

5. In Lissajous mode, a sine wave is substituted for the standard 'sawtooth' wave applied to the horizontal input.

6. This can be useful for a hands-free operation where you play a note, then be quiet, and the wave will stay on the screen.

7. When it finds something that looks like it may be some sort of musical note, it holds it on the display until the next musical note is found.

8. Capture - This sync method uses a bit of 'fuzzy-logic' to determine if the signal is perhaps a 'pitched' sound.

9. If the incoming data is periodic, you will see more cycles when the Horizontal Scale is increased.

10. At the 1x setting, every point of incoming data is displayed.

11. Lissajous figures are of primary interest in viewing frequencies which are integer ratios to the sweep frequency.