# Softening Strident Sounds

I asked a question that was very well resolved by kjosborne

I have some audios that I am looking for better the quality.

Now I'm looking for a solution to soften the sound of "s", which we can find in space, station, square, ...

It seems very strident to me and I wish they were smoothed.

The link to the audio is this (If someone is having trouble accessing the file, let me know):

https://drive.google.com/file/d/1N3vQzsB1t222JXB2Sxze9yycEJdyHH2Y/view?usp=drivesdk

a = Audio@"https://drive.google.com/file/d/1N3vQzsB1t222JXB2Sxze9yycEJdyHH2Y/view?usp=drivesdk";
Column[{AudioPlot@a, AudioPlot@AudioTrim@a}]

• You could try a LowpassFilter and see if that corresponds to what you hear as strident. – bill s Nov 25 '17 at 4:39
• As soon as I can, I'll try. I also thought it might be an option. – LCarvalho Nov 25 '17 at 4:44
• A de-esser will do that for you. How difficult that is to implement that in Mathematica I don't know. – Simon Rochester Nov 25 '17 at 22:19