de-ess Icon



De-essing software to reduce sibilance in speech using TSP

Add a Review
0 Downloads (This Week)
Last Update:
Download de-ess-20131104.tgz
Browse All Files
BSD Linux



This de-esser uses a novel approach called Temporal Sibilance Processing. The idea is to distinguish between fricatives and voiced sections of the speech signal by the number of zero crossings in time. Most of the speech file is left untouched (the samples are directly copied from source to destination). Only fricatives that are long enough and loud enough are filtered. The advantage of this approach over traditional approaches is that the clarity of the remaining speech is completely unaffected.

de-ess Web Site


  • Reduce sibilance in speech without affecting the quality of the rest of the audio.
  • Sibilance can be classified according to harshness (RMS amplitude) and duration and custom filters can be applied to each class.


Other Useful Business Software

The Sight of Sound Icon

­ Improve VoIP Visibility from SIP to RTP

The Sight of Sound Icon
Cloudbased voice solutions are common in enterprise networks and frustrating for operations teams to manage. Simplify VoIP monitoring by having a proactive analysis of on-prem, hybrid and UCaaS voice services. Try the ThousandEyes VoIP monitoring solution today, free.
Write a Review

User Reviews

Be the first to post a review of de-ess!

Additional Project Details

User Interface


Programming Language




Thanks for helping keep SourceForge clean.

Screenshot instructions:
Red Hat Linux   Ubuntu

Click URL instructions:
Right-click on ad, choose "Copy Link", then paste here →
(This may not be possible with some types of ads)

More information about our ad policies

Briefly describe the problem (required):

Upload screenshot of ad (required):
Select a file, or drag & drop file here.

Please provide the ad click URL, if possible:

Get latest updates about Open Source Projects, Conferences and News.

No, thanks