# How to improve the sound.. Clattering and whistling peaks

**URL:** <https://forum.audacityteam.org/t/how-to-improve-the-sound-clattering-and-whistling-peaks/65912>\
**Category:** Windows\
**Created:** [October 29, 2022, 11:02am UTC](https://forum.audacityteam.org/t/how-to-improve-the-sound-clattering-and-whistling-peaks/65912 "2022-10-29T11:02:15Z")\
**Posts on this page:** 1\
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**Author:** ![Trebor](https://forum.audacityteam.org/user_avatar/forum.audacityteam.org/trebor/32/45854_2.png) [@Trebor](https://forum.audacityteam.org/u/Trebor)\
**Post date:** [October 29, 2022, 11:28am UTC](https://forum.audacityteam.org/t/how-to-improve-the-sound-clattering-and-whistling-peaks/65912/2 "2022-10-29T11:28:29Z")

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> [@](#):
>
> … on the hissing sounds there are loud whistling noises hitting the ears.  
> What tool can be used to smooth out this defect?

A de-esser. There is an Audacity-specific de-esser plugin called [desibilator](https://forum.audacityteam.org/t/updated-de-clicker-and-new-de-esser-for-speech/34283/199).  
[Other free de-esser plugins are available, but which work in real-time, e.g. … ['T-De-Esser Plus' free VST](https://forum.audacityteam.org/t/t-de-esser-plus-free-vst/62979/1) ]

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