AU Audio to TTA conversion is the process of transforming audio files in the AU (Sun/NeXT audio) container into the TTA (True Tapeless Audio) lossless format. It involves decoding the original AU-encoded PCM or μ-law audio and re-encoding it into TTA to preserve audio fidelity while changing file structure and metadata.
Related guides
Practical guides to help you choose formats, preserve quality, and avoid common conversion problems.
A practical, stage-by-stage guide to choosing the right podcast audio format. Learn why you record and edit in lossless WAV, then publish in compressed MP3 or AAC for delivery. Discover the best format for podcast episodes, how to settle the WAV or MP3 for podcast debate, which podcast MP3 bitrate to pick, how to tag and normalize episodes, and how to batch convert an entire back catalog with confidence.
Read guide →Audio file formats shape how music, podcasts, voice notes, archives, and streaming files sound, store metadata, and move between devices. This guide explains MP3, WAV, FLAC, AAC, OGG, and WMA in practical terms, including compression, bitrate, sample rate, conversion workflows, and the tradeoffs behind choosing the best audio format for quality, size, compatibility, and long-term preservation.
Read guide →FLAC and MP3 solve different audio problems. FLAC preserves every sample for archiving, editing, and serious listening, while MP3 creates compact files for phones, cars, streaming libraries, and quick sharing. This guide explains how FLAC to MP3 conversion works, which bitrate settings are most transparent, how to protect tags and album art, and when you should avoid converting at all.
Drag your .AU file from your computer or use the browse function.
Confirm .tta as the selected destination format.
Click "Convert" and download your converted .TTA file once ready.
AU files typically use the MIME type audio/basic and are commonly encoded with PCM or μ-law codecs. TTA files use the MIME type audio/x-tta and feature lossless compression technology, making them ideal for archiving and high-fidelity playback. Both formats serve distinct purposes in audio storage and playback scenarios.
The TTA (.TTA) format is commonly used for audio. Understanding its characteristics can be helpful when converting to or from other formats like AU Audio.
While specific technical details aren't available here, TTA files generally serve the purpose of storing audio effectively within their domain.
Easily convert your AU Audio files to the TTA format with our reliable online AU to TTA converter. Designed for seamless file conversion, this tool supports high-quality output and is accessible from any device without installation.
AU Audio is an older audio file format primarily used on Unix systems, known for its simplicity but limited compression. In contrast, TTA is a lossless audio codec designed to provide high-quality sound with efficient compression. Converting AU to TTA offers better audio preservation and wider compatibility with current devices.
Keep original sample rate and bit depth to preserve quality; avoid upsampling which adds no real benefit.
Optimal file sizes: AU files are typically small for voice or system sounds; for music, expect multi-MB sizes—TTA will be larger than lossy formats but exact size depends on source complexity.
For best quality preservation, convert PCM AU directly to TTA lossless without intermediate lossy formats.
Use batch conversion tools for multiple files to save time; check that the converter preserves channel layout and metadata.
This converter preserved all the audio quality I needed.
James M.
Musician
Fast and reliable AU to TTA conversion with no hassle.
Emma L.
Audio Engineer
Easy to use and perfect for converting my AU files to modern formats.
Daniel K.
Podcaster
Start your free AU to TTA conversion now.
Drag your file here to to upload.
Up to 250MB
Limitations: AU is an older container and may contain μ-law/a-law compressed audio which is lossy—converting to TTA will preserve current quality but cannot restore lost detail.