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What is DTS?

DTS (Digital Theater Systems) is a multi-channel surround sound format used in Blu-ray, DVDs, and movie theaters.

What is AU?

Sun AU is the native audio format for Sun Microsystems workstations, using simple mu-law encoding or uncompressed PCM.

When Should You Use DTS vs AU?

Use DTS When...

DTS is built for movie theater audio, blu-ray surround, home theater. Think of it as the practical workhorse — small files, big compatibility, no fuss.

Use AU When...

For legacy unix audio, sun workstation sound, nothing beats AU. It sets the standard for quality, trusted by professionals who cannot afford compromises.

DTS vs AU: Key Differences

  • •DTS uses lossy compression while AU uses lossless compression — this is the fundamental technical difference between the two formats.
  • •The switch from lossy compression to lossless compression means you preserve full quality at the expense of larger file sizes.
  • •How transparency is handled: AU supports transparency, so alpha information is preserved during conversion.
  • •File sizes: DTS files typically range Large for multi-channel audio and AU files Small to medium, similar to WAV.
  • •Primary audience: DTS is built for movie theater audio, blu-ray surround, home theater scenarios, while AU focuses on legacy unix audio, sun workstation sound — pick the format that matches your output requirement.

Advantages of DTS

  • ✓DTS compresses data using lossy methods, keeping file sizes manageable for Movie theater audio, Blu-ray surround, home theater.
  • ✓Industry-wide support means DTS files open anywhere — from legacy systems to the latest devices.
  • ✓Small file sizes make DTS ideal for email, web uploads, and cloud storage.
  • ✓From professional software to open-source alternatives, DTS works out of the box.

Advantages of AU

  • ✓The lossless nature of AU means file sizes stay reasonable while handling Legacy Unix audio, Sun workstation sound efficiently.
  • ✓From mobile devices to enterprise servers, AU is recognized and supported everywhere.
  • ✓The trade-off for AU's perfection is larger files — but for archival work, it is worth every megabyte.
  • ✓AU is a first-class citizen in all major software ecosystems, from creative suites to development environments.

Common Use Cases for DTS to AU Conversion

  • Voice recordings
  • Streaming services
  • Audio books
  • Sound design
  • Language learning
  • Professional broadcasting

Industry Applications

BroadcastingAudio EngineeringLanguage LearningAccessibilityVoice-overAudio Archiving

Best Practices for DTS to AU Conversion

  • →For DTS to AU: 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
  • →AU 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

Related Article

Video Compression Guide: Reduce File Size Without Losing Quality

Learn more about DTS and AU formats in our detailed guide.

Troubleshooting DTS to AU Conversion

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

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About DTS and AU

DTS

DTS (DTS audio) - DTS, digital surround sound format for theaters and home audio. Best for movie theater audio, blu-ray surround, home theater.

AU

AU (AU audio) - Sun AU, legacy Unix audio format for Sun workstations. Ideal for legacy unix audio, sun workstation sound.

Format Comparison

CompressionLossy → Lossless
TransparencySupported
Use CaseConvert from movie theater audio, blu-ray surround, home theater to legacy unix audio, sun workstation sound
File Size~Small to medium, similar to WAV after conversion

FAQs

Is converting DTS to AU free?

Yes, GoConvertFile offers free conversion of DTS to AU for files up to 100MB. No registration required.

How long does it take to convert DTS to AU?

Most DTS to AU conversions complete within seconds for standard-sized files. Larger files may take longer depending on the conversion complexity.

What is AU best used for?

AU is ideal for legacy unix audio, sun workstation sound. Sun AU, legacy Unix audio format for Sun workstations

Does converting DTS to AU lose quality?

No, converting DTS to AU does not cause additional quality loss — AU uses lossless compression. However, any artifacts already present in the original DTS file will persist in the AU output.

What file size should I expect after converting DTS to AU?

AU files are typically 2-5x larger than equivalent DTS files because AU preserves all pixel data. This is expected and necessary for lossless quality.

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