What is TTA?

True Audio (TTA) is a free, real-time lossless audio codec that provides efficient compression without compromising audio quality.

What is AAX?

AAX files are built around lossy compression. Designed for audible audiobooks, digital spoken word, they use the audio/x-aax MIME type and typically range from varies by content.

When Should You Use TTA vs AAX?

TTA vs AAX: Key Differences

• •TTA uses lossless compression while AAX uses lossy compression — this is the fundamental technical difference between the two formats.
• •Moving from TTA (lossy) to AAX (lossy) means the output file will be significantly smaller — but at the cost of some visual fidelity.
• •Alpha channel support: AAX handles transparency, so semi-transparent pixels from the source will be lost.
• •AAX files tend to be differently sized than TTA
• •Use case fit: TTA targets lossless audio compression, archival and AAX targets audible audiobooks, digital spoken word — your choice depends on which workflow stage you are serving.

Advantages of TTA

• ✓TTA uses lossless compression tailored for Lossless audio compression, archival.
• ✓TTA is supported natively on virtually every device, browser, and operating system.
• ✓TTA files are bit-for-bit perfect, preserving every pixel and sample for professional work.
• ✓TTA integrates seamlessly with all major creative tools and workflows.

Advantages of AAX

• ✓AAX uses lossy compression tailored for Audible audiobooks, digital spoken word.
• ✓AAX is supported natively on virtually every device, browser, and operating system.
• ✓AAX files are compact and quick to transfer, even over slow connections.
• ✓AAX integrates seamlessly with all major creative tools and workflows.

Common Use Cases for TTA to AAX Conversion

• Audio books
• Sound design
• Language learning
• Professional broadcasting
• Video game audio assets
• Film soundtracks

Industry Applications

Best Practices for TTA to AAX Conversion

• →For TTA to AAX: match the sample rate and bit depth to your delivery platform — 44.1 kHz / 16-bit is the standard for music
• →Apply loudness normalization (LUFS) before conversion to ensure consistent volume across your audio library
• →AAX prioritizes quality — ensure your storage can accommodate the resulting file sizes
• →Check that metadata tags (artist, album, track number) survive the conversion
• →Convert a short segment first to verify quality at your chosen bitrate
• →Keep a lossless master copy in case you need to re-encode for a different platform

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Troubleshooting TTA to AAX Conversion

• !AAX audio quality degraded vs TTA → use a higher bitrate (at least 256 kbps for music)
• !AAX file won't play on your device → check format compatibility with your player or platform
• !Metadata (artist, album, title) lost after TTA to AAX conversion → some formats like AAX may not support ID3 tags
• !Volume changed after converting TTA to AAX → normalize audio levels before conversion for consistent playback

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