Phasing (Phase Invertion)
A waveform’s exact opposite is called an inversion. It is a shift of 180 degrees. A waveform and its inversion cancel each other out completely, so it is usually not desirable to have two track recordings of the same source if one is phase inverted. It can lead to reduced volume, lowered or distorted response in certain frequencies, or even silence in the case of two tracks which are exactly identical.
Occasionally, for example when recording a source using two microphones, one of the microphones may be recording an inversion of the other, the resulting tracks may, to some degree, be cancelling each other out. The phase invert button allows you to invert the phase of a track to match another.
A PAZ Analyzer generates a comprehensive real-time visual representation of your audio’s stereo positioning, frequency spread, and Peak/RMS levels. Spectrum analyzers can come in handy for finding specific problems that just plain elude one's ear. For example I using a PAZ Analyzer can help ID the source of some noise creeping into recordings and can reveal interesting harmonic imperfections. This is something that even the best trained ears would have had trouble isolating.
PAZ Analyzer
A visual graphic display of a selected audio signal. Usually measured in decibels and hertz; volume levels and frequency (20kHz to 20Hz).
Frequency Spectrum Analyzer