The High Pass Filter is the go to tool to get rid of or reduce low frequency noise. Listen to learn how flexible this tools is. 

PRODUCTION NOTES

Recording Mic: Samson Q2U Dynamic with pop filter and foam windshield.

Recording device : Dell G7 Windows 10 Laptop via USB

Recording location: Sitting at dining table - no pillowfort but fairly non-reverberant location with soft furnishings and bookshelves.

Recording app: Audacity for Windows

Recording format: WAV (16 bit stereo)

Sample rate: 44100Hz

Editing app: Audacity

Sound Treatment: Auphonic Productions at Auphonic.com

Auphonic.com settings [to output as a 16bit mono WAV file]: Adaptive Leveler (on), Loudness Normalization (Loudness Target -19 LUFS ), Filtering (on), Noise and Hum Reduction (Reduction Amount: Auto), Sample rate: 44.1kHz

I uploaded the resulting WAV file to Anchor.fm to host the file and added the music from their free music stock.

Anchor automatically converts the WAV file into a 128kbps .m4a file