Audio Fix: Removing Siren and Cellphone Noises

THE PROBLEM

During a podcast recording, a police siren and cell phone ring can be heard noticeably in the background.  The particular sound issue is often described as “baked” into the audio, as the guest kept talking through out, making removal of these artifacts especially problematic.

 

THE FIX (Using iZotope RX7) 

Here’s are visual and audio A/B comparisons.

LISTEN HERE

AUDIO ENGINEERING – SOUND REMOVAL SIREN & CELLPHONE

 

 

 


HOW IT’S DONE

 

Find the noticeable sound artifact and mark it with one of the selection tools.

Avoid taking out too much of the content by using the narrowest tool possible, such as the lasso. 

 

 

 


Use the harmonics selection tool to locate up to 10 instances of harmonics.

Note how the upper frequency harmonics are not visible in the spectrogram. 

 

 


Remove or dampen the selected artifacts using Spectral Repair tool.

Adjust the attenuation settings as necessary.  As a rule, less is often better.

Multiple passes may be necessary.

Trust your ears as to what is good enough.

 

 

 


MORE AUDIO ENGINEERING & EDITING TOPICS