Buzz
An equalizer is a device designed to balance or correct various tonal imbalances and synchronize them. It works by adjusting the quality of the sound that passes through it. Using different filters, equalizers allow you to modify the frequency ranges of the audio signals. These modifications can either be positive, known as 'boosts,' or negative, referred to as 'cuts.'
Here’s an overview of the most common filter types in equalizers:
- High and Low Pass Filters These are among the most frequently used filters. A high-pass filter, sometimes called a low-cut filter, reduces sound below a selected cutoff frequency. On the other hand, the low-pass filter, also known as a high-cut filter, decreases sound levels above the user’s chosen cutoff frequency.
- Shelving Filter This filter applies the same adjustment to all frequency sounds above a specific selected frequency.
- Peaking Filters Typically used for specialized tasks, peaking filters enable detailed adjustments of tone when aiming to hit a particular frequency [source: White, Senior].
Here’s a list of some common types of equalizers:
- Shelving Filter Equalizer This is the most straightforward and widely used equalizer, featuring one control for adjusting the bass and another for tuning the treble.
- Parametric Equalizer A parametric equalizer lets you adjust both the cut and boost levels, as well as specify which frequency range is most impacted.
- Graphic Equalizer The graphic equalizer removes the uncertainty from equalizing. It displays a graph (as indicated by the name) that shows all the available frequencies. With this visual aid, you can fine-tune your adjustments rather than relying solely on your hearing, enabling you to modify the sound based on the graph's information [source: Sound Institute].
