Adaptive Multi-Rate Audio

Name: Adaptive Multi-Rate Audio


Description: The Adaptive Multi-Rate (AMR or AMR-NB or GSM-AMR) audio codec is an audio compression format optimized for speech coding. AMR speech codec consists of a multi-rate narrowband speech codec that encodes narrowband (200–3400 Hz) signals at variable bit rates ranging from 4.75 to 12.2 kbit/s with toll quality speech starting at 7.4 kbit/s.

Deprecated: false

MIMEType: audio/amr

PUID: fmt/356

sameAs : PRONOM:

Extension: amr

Magic: true

Container Magic: false

Binary Magic: true

Signature Priority Over:

See Also (e.g. Wikidata, Library of Congress):

Software that can read the format:

Alias: AMR-NB