Monday, June 8, 2015

How to Reduce a 60 Cycle Hum

Removing a hum below 60 cycles-per-second will help you improve the quality of your music and reduce unwanted noise. Audio filters make it possible to completely remove frequencies under a specified frequency range. You must use an audio editing program to accomplish the task of removing the hum. By applying a carefully constructed audio filter, you can isolate and remove the hum with ease. To effectively reduce the hum, you must use a high-pass filter that removes frequencies below the specified frequency which are measured in hertz, or cycles-per-second.

Step 1

Open your audio editing program and drag your audio file into the main window to import your audio for editing.

Step 2

Find the "Effects" menu at the top of the screen. All audio editing programs have an effects menu. Sometimes it is labeled as "Audio Effects."

Step 3

Select the "High Pass Filter" from the list of options in the "Effects" drop-down menu.

Step 4

Type the number 65 into the "cutoff frequency" or "hertz" box. Press "OK" and the hum will be reduced and in some cases completely removed.


Hertz is abbreviated as "Hz." If you have trouble finding hertz in your high pass filter, look for the abbreviation.

If the hum remains, try changing the cutoff frequency to 70.