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Convert SPX to CAF
Convert SPX to CAF format — 100% browser-based, no upload required.
2 cores · low tier
Drop a file here or click to select
Format will be auto-detected
About these formats
Source
SPX
Speex AudioOpen-source speech codec designed for voice over IP. Provides good speech compression at very low bitrates.
Best for
VoIPVoice chatSpeech compressionPodcasts
Advantages
- + Optimized for speech
- + Open source
- + Very low bitrate
Limitations
- − Superseded by Opus
- − Speech only
- − Declining usage
Target
CAF
Core Audio FormatApple's flexible audio container supporting any codec. Designed to overcome limitations of older formats like AIFF and WAV.
Best for
macOS/iOS audioProfessional audioApple development
Advantages
- + Any codec
- + No size limits
- + 64-bit offsets
- + Apple native
Limitations
- − Apple-only
- − Limited third-party support
- − Niche format