What is the difference between .m4b and .spx?
- Extension
- .m4b
- .spx
- Format
- Binary
- Binary
- Category
- Audio
- Audio
- Developer
- Apple
- Xiph.Org
- Description
- It is an audiobook file compressed using .AAC algorithm based on MPEG-4 container format. It is similar to .M4A file but its denoted as an audiobook and supporting audio players can bookmark it.
- Audio file compressed using Speex compression and saved in the Ogg Vorbis container format; designed as an audio compression format specifically for speech; compresses voice at 2 to 44 kbps and supports 8 kHz, 16 kHz, and 32 kHz compression in the same bitstream.
- MIME Type
- audio/x-m4a
- audio/ogg
- Sample
- sample.m4b
- Wikipedia
- .m4b on Wikipedia
- .spx on Wikipedia