Glossary

Stereo mode
This is the conventional way you would apply equalization on a stereo signal, where you would use one EQ channel to process the L side and another EQ channel to process the R side. The two EQ channels may be set identical or not, depending on your needs.

MS mode
This way the stereo signal is encoded to M-S before applying equalization and decoded back to Stereo after the EQ has been applied. M-S means “mid-side” and allows for independent control of the “center” part from the “sides” or “lateral” part of the musical program. So instead of being able to individually work on L and R channels you will be able to process the “center” and “lateral” part of your mix. This can be very useful in many cases, for example where a mix presents a weak vocal intelligibility. In this case, you would apply mid boost to the M-channel only (center) without touching the mid frequency response on the lateral part, where you may have guitars.

Oversampling
Most of today’s digital audio has a sampling rate of 44.1 or 48 kHz. High-resolution digital audio is used sometimes but is still far from being defined as a standard. Unfortunately 44.1 and 48 kHz sampling rates are simply not enough for extremely high quality audio processing, especially if we talk about high frequency filtering and equalizers. A technique that can be used is called Oversampling, where the audio signal is resampled at a higher (typically 2x or 4x) sampling rate, sent to the processor and then down-sampled to the original rate. This allows for the processor to deliver better quality because it runs at a higher sampling rate.

Loudness
Characteristic of audio to seem louder or quieter when played, in comparison to other audio.

RMS
Root Mean Square. Shows the “power” of the audio signal over a certain time window, this indication can give better “audio volume” representation than conventional peak meters.

Brickwall Limiter
A digital audio processor where you can set an absolute maximum level that the audio signal is not allowed to exceed at all.

Linear Phase Equalizer
A particular type of audio equalizer (that can only be made with numeric computation, in the digital domain) that only alters the level of certain audio spectrum regions, without affecting the phase response on the intervention range or surrounding frequencies.

12/12