That metallic sound is annoying
The metallic, tin-like sound you may hear in your audio is an unwelcome annoyance. All audio editing platforms like Audacity, Adobe Audition, and AVID have tools to help, but it’s not a sure fix.
In Audacity, which is a free open source audio recording and editing application, you can use their “equalization” effects tool. Most times you can significantly remove or completely eliminate the unwanted sound by reducing the frequency range where you hear the metallic sound. Typically you hear metallic, tinny sounds in the range of 7 kilohertz to 9 kilohertz.
Open Audacity, click “File” and “Open” and locate the file you want to fix.
Click “Play” and locate the section with the metallic, tin-like sound. Once you have located the section, click “Stop”
Drag the cursor over the part with the metallic sound to highlight
Click “Edit” and select “Equalization”
In the Equalization dialogue box, double-click around 8 kilohertz on the equalization line to insert a plot mark
Double-click on 7 kilohertz and 9 kilohertz to create two more plot marks
Click and hold the 8 kilohertz plot mark and drag the mark down do the -24 dB level. The equalization line should look like a flat line with a dip near the end
Click “Preview” to review how much you’ve reduced the sound
Drag the bottom plot mark to the left if you can still hear a “high-pitched” metallic sound. Drag this mark to the right if you can still hear a “low-pitched sound.
You can further narrow the field of equalization by dragging the top-left plot mark a little to the right and the top-right plot mark a little to left.
Once you are happy click “OK” to save
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