What does DRI mean in UNCLASSIFIED

DRI stands for D Retro Inverso, a type of audio signal inverter used to change the phase of an audio wave.

A signal inverter takes an incoming audio wave and flips it around so that its polarity is reversed, altering the phase of the wave.

DRI can be used to create effects such as phase cancellation or phase shift in order to enhance sounds or alter their timbre. It's often used in recording, mixing, and mastering processes for creating complex and interesting soundscapes.

A signal inverter reverses the polarity of an audio wave by taking its peak amplitudes and flipping them around so that they form peaks on either side of the original two peaks. This changes the directionality and shape of the waveform which then alters the way it influences other waves when combined with them.

One potential downside is that it can make noise reduction more difficult since it alters the shape of the waveform which can interfere with noise reduction algorithms. Another potential negative effect could be unwanted artifacts created by increased complexity due to multiple phases interacting with each other in unpredictable ways.