Poor quality mics, sound cards or analogue recording mediums can introduce background noise (hiss or hum). The recommended noise floor is below -60dB.
Whilst you’re here…
Audio Audit is an automatic benchmarking and proofing tool which checks the quality of your podcast MP3 files, giving you peace of mind before you publish.
It checks things like loudness, silences, restarted sentences, encoding, swearing and metadata.
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Creating an account only takes a couple of minutes. You’ll soon be able to start uploading your own audio files and improving your shows.