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Convert AC3 to SPX
Convert AC3 to SPX 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
AC3
Dolby Digital (AC-3)Multi-channel audio codec by Dolby. Standard surround sound format used in DVDs, Blu-rays, and digital television.
Best for
Surround soundDVD/Blu-ray audioHome theaterBroadcasting
Advantages
- + 5.1 surround
- + Industry standard
- + Good compression
Limitations
- − Lossy
- − Licensing costs
- − Surpassed by newer codecs
Target
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- − Superseded by Opus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