The vibrations often occur as a result of the speaker moving their feet when recording their voice overs, but they can be present for a whole host of reasons.

To learn more about these bassy rumbles, and other audio problems, check out our guide to 11 common problems when recording audio and how to fix them.

To remove them, simply load an EQ on your voice recording and add a high pass filter at around 60Hz. Depending on the voice you may be able to cut frequencies all the way up to 80Hsz, experiment and see what sounds best! Be careful though, if you set the high pass filter too high you may lose power in your voice recording.

Identify the fundamental frequencies of the voice you’re working with

The human voice, like all sounds other than a sine wave, consists of a fundamental frequency at the lowest end of its frequency range, and harmonic frequencies above this.

The fundamental frequency of the human voice (also known as f0) falls between 85 and 180 Hz for male voices and 165 to 255 Hz for female voices. Children’s voices tend to have a fundamental frequency at around 300 Hz.

On a visual EQ the fundamental frequencies of a voice can often be easily identified. Look for a peak in the fundamental frequency range – it will vary slightly with each syllable but will stay roughly at the same point in the frequency spectrum.

You can also use your ears to identify the fundamental frequency of a voice. Boost a bell band in the fundamental range and move it around until you find the frequency where the voice sounds most powerful.