What is Equalizer? Types of equalizer in music

Filter & Equalizer

A filter is any device or circuit that changes the tone, or timbre of an audio signal. Equalization generally consists of filter stages. Every filter and EQ has a phase response which varies in some way relative to the frequency.

Here’s a list of the common types of filters found in equalizers: How they change the signal is also crucial.

Highpass Filter

When reduces low frequencies below a certain frequency, is called Highpass Filter. Also named as  low-cut filter. There’s no boost or cut control.

Low Pass Filters

The low-pass filter or a high-cut filter, just the reverse of above mentioned. It uses to remove high frequency sounds like hiss or excessive brightness. It lowers the sound level above any selected cutoff.

Shelving Filter

It is a great option for equalizing a signal. It applies the same gain change, or adjustment, to all frequency sounds.

Peaking Filters

Some advanced filter designs create a peak resonance at the cutoff point for extra boom or force, is called peaking filters.

Types of Equalizers

There are multiple variations of equalizers.

1. Parametric equalizer

These are the most commonly used and versatile type of equalizer in music production. It helps to select the center frequency we want to equalize, bandwidth and gain. It’s multiband equalizer. Analog parametric equalizers typically range from three to eight bands, while digital parametric equalizers more bands. Parametric equalizers come in two basic variants: semi-parametric and fully-parametric. It is fully configurable and adjustable frequency bands.

Semiparametric equalizer:

It’s different from Parametric equalizer, as it’s can’t change the allocated bandwidth. Similar in selecting the  frequency for equalizing and gain.

2. Graphic equalizer

It’s perfect for live performance. It comes in various sizes. Most used in professional recording in the 20th century. It can have up to 31 or more bands. With more bands it shows higher accuracy over the frequency spectrum. It has narrower bandwidths. There is no control over the filter shape and bandwidth of each band. The most common is the octave graphic equalizer.

3. Shelving equalizer

The most simple and inexpensive equalizer. Can treble and boost tone controls found in consumer electronics. It can be found in any common equipment such as a stereo or Hi-Fi equipment. It have predetermined filter curves with a wide Q. Majority shelving equalizers have high and low shelving filters.

4. Dynamic equalizer

It is combine the precision of parametric equalization with the dynamic control of compression or expansion. This versatile combination gives you more control over shaping and enhancing sounds. Work similarly to multi-band compressors. Dynamic equalizers are especially useful for evening out the occasional booming or strident word in an otherwise great vocal performance. It can be especially helpful when mixing dynamic instruments, like drum kits.

Conclusion

It is critical for creating a perfect mix and a professional sound. There is an equalizer optimized for every tone-shaping task , think of music don’t stop go out  try some different types of equalizers on every sound you come across.