tamadex.blogg.se - What is linear phase eq

Linear-phase is exactly how it’s described: linear. The way that the equalizer algorithms are configured are completely different for linear-phase equalizers. These algorithms are digital, so obviously different from the get-go, but are meant to mirror the process of the analog latency and wide bands, and then its subsequent recovery, thus keeping with the minimum-phase concept. Most digital equalizers have algorithms that are modeled after minimum-phase equalizers, due to their prominence in the analog world, their lack of plug-in latency issues, and in the big market for analog replication.

This is unavoidable, but manufacturers try to reduce the amount of phase-shift as much as possible (unless it produces a pleasing or characteristic sound), thereby calling these sets of equalizers ‘minimum-phase.’ With any analog equalizer, the bands being boosted or cut are subject to phase-shifts due to the latency created by the change in amplitude within that band in relation to unaffected bands. The linear-phase equalizers and minimum-phase equalizers will produce different results despite the same sound source every time. I recorded the results and was astounded by the differences when I boosted or cut frequencies at any bandwidth or frequency. I created a new Pro Tools session with an oscillator at 1 kHz and line level running separately through a minimum-phase EQ plug-in and a linear-phase EQ plug-in. I said “to hell with it,” and held my own experimentation. After the search, I was still grasping at straws. One of the most popular searches relating to linear-phase EQ on Google is “linear-phase explained,” which still holds very poor results. “Can there be a hardware linear-phase EQ? Why or why not?”.“Why are linear-phase EQs so directed toward mastering?”.“What is linear phase, and how does it relate to a minimum-phase EQ?.

“What is the reason for linear-phase EQ?.

There are some very basic questions that should be answered that almost seem hidden from any product descriptions or message boards. However, there is very little actual documentation on linear-phase filters and how a linear-phase relationship is structured or relates to audio processing. I found that I was not alone in my search. I wanted to really understand the differences and possible advantages/disadvantages one may have over the other in particular situations. I’ve been doing a lot of study about linear-phase versus minimum-phase equalization.