Hi , I have encountered some extreme screeching in some of my recently recorded game-play.
The screeching only happens when I am speaking either loud or pronounce a high pitched word/leter/vowel…
Here are two samples, the first (001) some minor screeching when I speak and the second (002) extreme screeching when I speak very loudly… (from my Google Drive) https://drive.google.com/file/d/0B7eo2-Df-VOpaWJ4ZGtBUEJ6dGM/view?usp=sharing
I have searched and skimmed trough many videos and google results in vain… I beg for your help please ! (I learn fast)
Your recording level is too high. Turn down the recording level so that the maximum peaks do not touch the top/bottom of the track. Allow a bit of “headroom” and aim for a peak level of about -6 dB (half the track height) - that’s about the middle of the yellow section of the recording meter. http://manual.audacityteam.org/o/man/meter_toolbar.html#recording
If you are hitting the red like this (below) then your recording level is too high and permanent, irreparable damage will be caused:
You could try the “Clip Fix” effect. That effect tries to reconstruct the peaks that have been clipped off the waveform. Clip Fix can work reasonably well if there is only a small amount of clipping, but I’d guess that your badly clipped sample is too badly damaged to repair.
See: http://manual.audacityteam.org/o/man/clip_fix.html
It is much better to avoid clipping by keeping the recording levels low enough to cope. Restoring badly clipped audio is an impossible job - it’s like tearing the top and bottom off a photograph, throwing away the torn off strips, and then asking Photoshop to fix it.
We recommend that voice recordings bounce around the -6 region. Around there. Nobody will come out with a stick if you go a little under or over. You may not go all the way up into the extreme red zone. We can’t fix that.
We recommend -6 even though delivery for AudioBooks is -3. You can make -3 in post production. You can make anything else you want including sound much louder by using the limiter or compressor tools.
Once you permanently damage the sound by recording too high, you’re dead.
Number Two.
The Four Horsemen of Audio Recording (reliable, time-tested ways to kill your show)
– 1. Echoes and room reverberation (Don’t record the show in your mum’s kitchen.)
– 2. Overload and Clipping (Sound that’s recorded too loud is permanently trashed.)
– 3. Compression Damage (Never do production in MP3.)
– 4. Background Sound (Don’t leave the TV on in the next room.)
, I have encountered some extreme screeching in some of my recently recorded game-play. 
I’ll check my mics volume boost. Thx