This might seem like a simple distinction but it is never that easy when it comes to physics. The distinction between Linear Phase and Minimum Phase topologies is that Linear Phase has an equal phase response whether cutting or boosting whereas Minimum Phase doesn’t. Sometimes we use minimum phase designed equaliser that imparts a certain colour on the sound. This is where we get creative and reshape sounds to suit the mix. We use the same principles when using equalisation to remove problematic or redundant frequencies.Ĭreative equalisation is used to ‘colour’ a sound or to reshape its characteristics to create a new sonic texture (boosting the mid-range frequencies of a kick drum to accent the punch and body is a good example). This form of equalisation is termed as ‘corrective or compensatory’ EQ. EQ was used as a means of controlling the gain of a range of frequencies. Tone controls were created and used to compensate technical inaccuracies in the recording chain, more notably, compensating for microphone colouration and room acoustics. It then transgressed into the broadcasting industry. EQ was used to counteract some of the problems in telephone systems. The positive gain is referred to as ‘boost’ and the negative gain is referred to as ‘cut’.Īctually the first ever instances of equalisation were in the communications industry. This is achieved by using a number of filter circuits, which apply positive or negative gain to selected frequency ranges. To define what equalisation is would take quite a while but a condensed definition would be:Ī dynamic processor which uses filters to alter the balance of frequencies in a sound. There are many instances whereby EQ has to be used to compensate for a poor microphone (or it’s use in a given environment) or a poor room (poor acoustics resulting in boomy, resonant, ringing etc anomalies).ĮQ is also used in live situations to compensate for the environment, the singer, the microphone, background noise, colour and so on. In fact, this method is not limited to the mix and production stages but is also prevalent at the tracking stage. Separating the frequencies of instruments by the use of EQ is a traditional, yet subtle, method of creative and corrective EQ. In the studio, we take this many steps further as we need very specific tools for specific tasks and a single all-encompassing equaliser might not be enough. BUT, even more common are the equalisers provided with stereo systems that can be used to refine the sound to the listener’s tastes. A gain knob is sometimes referred to as a single band gain control. Every time you turn the volume knob on your stereo system you are in effect using equalisation.
#Mic equalizer definition how to#
What is an equaliser and how does it work video tutorial explains in detail what an equaliser is and how to use it for any given task.īelieve it or not, you have been using an equaliser all your life.
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