I have two recordings from the same night, different sources, and I'm using one to patch the other. However, the recordings' phase is inverted relative to one another. I've read some posts that recommend ways to check for which gear is properly in phase by recording a sharp transient, like a clap, or thwacking a pen on a desk or some such. But I don't have the luxury of doing so with both sets of gear, nor am I necessarily convinced that one of the recording setups is *always* out of phase with the other. So that doesn't help me much. Anyway...
How do I tell which recording is properly in phase?
I've tried zooming in on the waveforms on as sharp an attack as I can find. Theoretically, the properly phased recording should have a pos (+) jump in the waveform as a result of the attack. The improperly phased recording would have an initial neg (-) jump. But I'm finding it very difficult to determine exactly when the attack occurs, and therefore whether each recording first jumps (+) or (-) as a result of the attack.
For example, in the attached waveform JPGs, which peak represents the *start* of the attack, and therefore will determine which is properly in phase or not? I'm not sure which peak to use as my guideline - one of the small peaks early in the waveform which likely represent the beginning of the attack (and if so, which of the small peaks), or the first BIG peak relative to the others. Any ideas?