
1) Hissing quality
Found on
https://www.crosswordclues.com/clue/sibilance

1) Sibilation
Found on
https://www.crosswordclues.com/clue/sibilance

• (n.) Alt. of Sibilancy
Found on
http://thinkexist.com/dictionary/meaning/sibilance/

Energy from a voice centred around 7 kHz caused by pronouncing 's', 'sh' or 'ch' sounds.
Found on
http://www.encyclo.co.uk/local/20447

High frequency whistling or lisping sound that affects vocal recordings, due either to poor microphone technique or excessive equalization
Found on
http://www.encyclo.co.uk/local/20532

An exaggerated hissing in voice patterns. (Post Production)
Found on
http://www.filmland.com/glossary/Dictionary.html#A

Distortion of sounds caused by a person being too close to a microphone when saying words with strong 's', 'z', 'sh', 'ch' or 'zh' sounds.
Found on
http://www.thenewsmanual.net/Resources/glossary.html

High frequency whistling or lisping sound that affects vocal recordings, due either to poor mic technique or excessive equalisation.
Found on
http://www.traditionalmusic.co.uk/music%20tech%20glossary/Music%20Tech%20Gl

alliterated s, z, or sh sounds.
Found on
https://www.cliffsnotes.com/literature/a/american-poets-of-the-20th-century

A hissing sound produced when pronouncing S and Z.
Found on
https://www.encyclo.co.uk/local/20687

High frequency complex sounds in speech, such as 'S', 'F' & 'T'.
Found on
https://www.encyclo.co.uk/local/22369
No exact match found.