De-Essing is a way to control the vocals in a song . It is a very unique tool. It gives you the opportunity to change the impact of vocals that peak past the 2-kHz frequency range. However, it does’t change any other part of the vocals, which is extremely important to how a vocal clip can end up sounding after a full compression.
Below is a picture of a Stock De-Esser from Logic Pro X
De-Essing is mainly used to control the sibilant sounds a person may use during the recording of a song. Sibilant is characterized by someone or something making a hissing sound. This sentence simply changes Zebra’s stripes. Now that’s way too many sibilant sounding words in one sentence.