Audio (MP3)
32 kbit/s — MW (AM) quality
96 kbit/s — FM quality
128 - 160 kbit - Ok quality, difference can be heard by a sharp ear
192 kbit/s — Good quality, difference can only be heard by a few
224 - 320 kbit/s — High quality, nearly lossless quality

Other audio
4 kbit/s — minimum necessary for recognizable speech (using special-purpose speech codecs)
8 kbit/s — telephone quality (using speech codecs)
500 kbit/s - 1 Mbit/s — lossless audio as used in formats such as FLAC, WavPack or Monkey's Audio
1411 kbit/s - PCM (WAV) sound format of Compact Disk Digital Audio

Video (MPEG2)
16 kbit/s — videophone quality (minimum necessary for a consumer-acceptable "talking head" picture)
128 – 384 kbit/s — business-oriented videoconferencing system quality
1 Mbit/s — VHS quality
5 Mbit/s — DVD quality
15 Mbit/s — HDTV quality