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HomeWAV vs AU
.wav
.au

WAV vs AU

Compare Waveform Audio and Sun Audio formats — understand the key differences and when to use each

Format Overview

WAV

Waveform Audio

WAV (Waveform Audio File Format) is an uncompressed audio format developed by Microsoft and IBM, based on the RIFF container format. WAV stores audio as raw PCM (Pulse Code Modulation) data, providing perfect, bit-for-bit audio reproduction with zero quality loss. Standard CD-quality WAV uses 16-bit depth at 44,100 Hz sample rate (1,411 kbps), while professional recordings use 24-bit at 96 kHz or higher. WAV is the industry standard for professional music production, film scoring, sound design, voice-over recording, and audio mastering. It's supported by virtually all audio software and hardware. The main disadvantage is large file size — approximately 10 MB per minute at CD quality. WAV also supports metadata, cue points, and embedded loop information. For archival purposes, WAV provides the most reliable long-term audio preservation.

.wavaudio

AU

Sun Audio

Sun Audio (.au) is a audio file format.

.auaudio

WAV vs AU: Feature Comparison

FeatureWAVAU
Full NameWaveform AudioSun Audio
File Extension.wav.au
Categoryaudioaudio
Free to Convert✓ Yes✓ Yes
Browser Support✓ All Browsers✓ All Browsers
Convert to Each Other✓ Yes✓ Yes

When to Use WAV vs AU

Use WAV when you need:

  • •Files in Waveform Audio format for maximum compatibility
  • •Industry-standard audio format support
  • •Wide software and platform compatibility

Use AU when you need:

  • •Files in Sun Audio format for specific workflows
  • •Optimized audio format features
  • •Modern format advantages and smaller file sizes

Convert Between Them

WAV AUAU WAV
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Learn More About These Formats

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Frequently Asked Questions

What is the difference between WAV and AU?
WAV (Waveform Audio) and AU (Sun Audio) are both audio file formats. WAV files use the .wav extension while AU uses .au. They differ in compression, quality, compatibility, and intended use cases.
Can I convert WAV to AU for free?
Yes! Convert999 lets you convert WAV to AU completely free, directly in your browser. No file upload to any server, no registration needed — your files stay private on your device.
Which is better, WAV or AU?
It depends on your use case. WAV (Waveform Audio) may be better for certain workflows, while AU (Sun Audio) excels in others. Consider factors like file size, quality, software compatibility, and your specific needs.
Is it safe to convert files on Convert999?
Absolutely. Convert999 processes all files 100% locally in your browser. Your files are never uploaded to any server, ensuring complete privacy and security.

WAV Converter

Convert from WAV

AU Converter

Convert from AU

File Tools

Compress, resize, merge

Convert to WAV

All sources → WAV

Convert to AU

All sources → AU

Format Statistics

Trends & data 2025

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