How it works
Uncompressed size = sample rate × bit depth × channels × seconds ÷ 8 bytes. One hour of 48 kHz/24-bit stereo is about 1 GB; the same hour as a 320 kbps MP3 is 144 MB.
Field recordists often record 24-bit (or 32-bit float) for headroom and keep WAV masters, then share compressed copies.
Frequently asked questions
What sample rate should I use for field recording?
48 kHz is standard for video and plenty for most nature sound; 96 kHz or higher helps if you will slow recordings down or capture bat and insect ultrasound.