Convert AAC to AMR

Convert AAC files to AMR format online for free. No upload required, 100% private.

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AACAMRRe-encoding

Converting between two lossy formats (AAC → AMR) involves re-encoding, which may cause additional quality loss. For best results, convert from the original source file when possible.

About AAC

AAC

Advanced Audio Coding

AAC is a lossy audio codec designed as the successor to MP3. It provides better sound quality at similar bitrates and is widely used in streaming services.

Extension
.aac
Developed By
ISO/IEC
Released
1997
Compression
Lossy

Typical Use Cases

YouTubeStreaming servicesDigital broadcastingMobile devices

Pros

  • • Better quality than MP3
  • • Efficient compression
  • • Wide platform support

Cons

  • • Patent encumbered
  • • Less universal than MP3
  • • Variable encoder quality

About AMR

AMR

Adaptive Multi-Rate Audio Codec

AMR is a speech audio codec optimized for voice recording. It is commonly used in mobile phones for voice memos and MMS messages.

Extension
.amr
Developed By
ETSI
Released
1999
Compression
Lossy

Typical Use Cases

Voice recordingMobile phone audioMMS messagesVoIP

Pros

  • • Very small file size
  • • Optimized for speech
  • • Mobile device support

Cons

  • • Poor music quality
  • • Speech only
  • • Limited compatibility