Join Alex U. Case for an in-depth discussion in this video Constructive and destructive interference, part of Audio Foundations: Delay and Modulation.
Multi-track mixing combines all the tracks you have into a stereo signal.…Really two different signals;…one intended for the left loudspeaker and the other for the right.…You go from several tracks to two, but a curious thing happens when two similar…signals are combined.…To illustrate this important concept, let's take a look at a few simple…sine waves;…we'll extend the concept to more musical signals before we're done.…If we combine these two sine waves, mix them together, the resulting signal is…simply the same frequency sine wave doubled in amplitude.…
Each of the two sine waves we're mixing is the same frequency and they're…perfectly aligned, moving up and down sinusoidally together.…Their interaction is perfectly additive.…This is known as constructive interference.…But let's change the second wave, sliding it to the right along the time axis…by half a cycle.…If we combine these two sine waves, the resulting signal is silence.…These two waves are pushing and pulling against each other.…At every instant one wave is doing the opposite of the other.…
- Adjusting the delay time, level, and feedback parameters
- Utilizing a low-pass filter and polarity reverse
- Setting up an effects loop
- Setting the delay time by tempo or by ear
- Understanding the distinct uses of short, medium, and long delays
- Adjusting modulation rate, depth, and shape
- Adding double tracking and spreader effects
- Manipulating tone with constructive or destructive interference
- Creating a comb filter and flange effect
Skill Level Appropriate for all
Q: This course was updated on 01/31/2014. What changed?
A: The Get in the Mix videos have been updated to the most recent version of Pro Tools. Also, the course now includes free Get in the Mix sessions for two more DAWs: Logic Pro X and Pro Tool.