Equalization Effects    

 

 

       There are several effects that combine equalization to generate a completely different effect . They include wah-wah pedals, de-essers, multi-band compression/expansion, and triggered filters.

       The most familiar of the above is probably the wah-wah pedal, which was popularized by Jimi Hendrix and others in the late Sixties. Unfortunately, its overuse in porno soundtracks has marginalized its use in recent times. The wah-wah pedal is just a frequency boost that is controlled by the motion of the pedal. On some pedals, you can adjust the range of the boost and the amount of the boost. The first one I ever had included distortion as well. Please check out this article for more info on the history and evolution of the wah-wah.

       De-essers, as discussed in last month’s member question, utilize the side-chain operation of a compressor along with equalization to control sibilance in vocal tracks and annoying cymbal noises.

       Multi-band compression is mostly used in the mastering portion of music production. It divides the frequency spectrum into several bands and allows compression or expansion of the individual frequency bands. If a mix doesn’t have enough bass, for instance, you can use the multi-band to compress just the frequency range you desire and raise the output. This has a different effect than just boosting the frequency using an equalizer. Compression will bring out harmonic content that an equalizer can’t. You can also use a multi-band compressor to tame transients that are pushing the mix over 0db in order to increase the overall headroom of the mix.

       Triggered filters, voltage controlled filters (VCF) or envelope filters are sweep-able filters that are triggered by playing dynamics. An auto wah is an example of just such an effect. It determines the depth of the sweep by how loud the note is.  Controls can include center frequency, rate, depth and mix. Synthesizers use  triggered filters to change the character of the sound depending on how hard a note is struck. Please consult this article for more information.

 

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dbx 1231 Dual 31-Band Graphic Equalizer
dbx 1231 Dual 31-Band Graphic Equalizer

IK Multimedia T-RackS Plug-In Mastering Software
IK Multimedia T-RackS Plug-In Mastering Software

Dunlop Original Crybaby Wah Pedal
Dunlop Original Crybaby Wah Pedal