--- title: How do I reduce harsh “s” sounds in dialogue? description: Use the De-Esser to target excessive sibilance while preserving clear speech. --- Try the **De-Esser** (`de_esser`) in invideo Editor, in **Effects**, under **Audio**. De-essing targets excessive sibilance: the sharp “s” and similar sounds that can stand out in speech. The De-Esser effect with the Voiceover Natural preset and Threshold, Frequency and Max reduction sliders The Advanced section of the De-Esser with Ratio, Knee, Attack, Hold and Release sliders and Stereo link Listen to a passage containing both sibilant words and ordinary dialogue while adjusting the treatment. Reduce the harshness without making speech dull or altering the speaker’s articulation. Check the result at a comparable listening level and in the full mix. The useful amount depends on the voice and recording.