TTA to AU Converter

Decode True Audio into Sun/NeXT AU format online

Drop files here. 1 GB maximum file size or Sign Up
to
Facebook Amazon Microsoft Tesla Nestle Walmart L'Oreal

Unix Audio

AU is native to Unix and Java — converting from TTA makes your audio compatible with these ecosystems.

Cross-System

While TTA is niche, AU works on Unix, Linux, and any Java-capable platform without additional software.

Online Tool

No command-line tools needed — convert TTA to AU entirely through your web browser.

How to convert TTA to AU

1

Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.

2

Choose au or any other format you need as a result (more than 200 formats supported)

3

Let the file convert and you can download your au file right afterwards

About formats

TTA (True Audio) is a real-time lossless audio compression codec developed by Aleksander Djourik, with its origins tracing back to the early 2000s. The format reconstructs the original PCM stream bit-for-bit upon decoding, guaranteeing that no sonic detail is lost during storage or transfer. TTA handles standard CD-quality audio as well as high-resolution content up to 32-bit integer samples, making it suitable for everyday listening and professional archiving alike. Processing speed is one of TTA's defining strengths — the codec achieves fast encoding and decoding without heavy CPU demands, keeping it lightweight even on older hardware. The file structure supports ID3v1, ID3v2, and APEv2 metadata tags, so track information and album art travel with the audio. Hardware support appeared in several portable players, giving TTA a practical edge over some competing lossless formats. The open-source reference implementation ships under the GNU GPL, encouraging community adoption and third-party integrations. While newer codecs like FLAC have captured a larger share of the lossless audio landscape, TTA continues to serve users who value its simplicity and transparent compression.
Developer: Aleksander Djourik
Initial release: 2003
AU is an audio file format introduced by Sun Microsystems for its Unix workstations and the NeXT platform. It features a minimal 24-byte header specifying data offset, size, encoding type, sample rate, and channel count, followed by the audio payload. AU supports numerous encodings, including uncompressed linear PCM at various bit depths, mu-law and A-law companding (logarithmic compression used in telephone systems), and several ADPCM variants. This versatility made AU a workhorse across early Unix environments, web audio (Java applets defaulted to AU), and telephony applications. One advantage is simplicity: the compact header and straightforward structure make it trivial to parse, generate, and stream programmatically. The built-in mu-law option provides another benefit, delivering reasonable voice quality at just 8 KB per second — half the rate of 16-bit uncompressed audio — invaluable when storage and bandwidth were scarce. Although modern formats have largely supplanted AU in consumer applications, it retains a foothold in scientific computing and audio processing pipelines where minimal overhead and reliable cross-platform behavior are valued.
Developer: Sun Microsystems
Initial release: 1992

Frequently Asked Questions

What is AU?

AU is a simple audio format by Sun Microsystems — widely used in Unix/Linux systems and Java javax.sound applications.

Why convert TTA to AU?

Unix audio tools and Java apps use AU natively. TTA has no Unix or Java support, making AU the practical choice.

What plays AU?

Unix/Linux audio utilities, Java applications, VLC, Audacity, and SoX handle AU playback and processing.

Does AU support good quality?

AU supports uncompressed PCM at various bit depths and sample rates — preserving lossless TTA quality.

Is the conversion secure?

TTA uploads are deleted immediately. AU results are removed within 24 hours.

TTA to AU Quality Rating

5.0 (1 votes)
You need to convert and download at least 1 file to provide feedback!