SMP vs AU — Comparison & Free Converter
Fast, instant SMP to AU conversion. No signup required. Just drop your .smp file and get .au in seconds.
Batch Settings
还在为音频格式转换犯愁吗？无论是老式游戏机的SMP音效，还是专业音序器导出的SMP文件，想要在手机上随时播放，或者集成到现代多媒体应用中，常常会遇到兼容性问题。别担心，我们的SMP转AU工具就是专为解决这些烦恼而生。AU（Audio File Format）作为一种历史悠久且兼容性良好的音频格式，尤其在早期Macintosh系统和专业音频领域应用广泛，能够确保您的宝贵音源在新设备上焕发新生。操作简便，转换迅速，让您的音频文件轻松跨越平台限制，随时随地分享与聆听。
- 旧游戏音效转存与分享
- 专业音频工程兼容性处理
- 移动设备播放早期音源
在华语区，尤其是早期电脑和游戏爱好者群体中，偶尔会接触到SMP格式。将其转换为AU，有助于在Mac OS生态系统或更广泛的专业音频软件中无缝使用，满足特定专业需求或怀旧体验。
About SMP to AU Conversion
SMP or AU — which format should you use? The answer depends on your needs. Here's a quick breakdown.
SMP is a widely used file format. It has common platform support. AU is a widely used file format. It has common platform support.
So when should you convert SMP to AU? This conversion is ideal when you When you need a AU file. This conversion helps you convert between formats quickly.
Converting SMP to AU maintains high quality with CocoConvert's optimised encoder settings.
If you've decided AU is the right choice, CocoConvert makes the conversion effortless. Upload your .smp file, pick AU, and click Convert — done in seconds. The converter runs on secure servers in Germany, powered by FFmpeg, Sharp, and qpdf. Files are encrypted via TLS and erased within 24 hours.
Free tier: 5 files/hour, 250 MB each. Pro: 100 files/hour, 5 GB each. Works in every modern browser on desktop and mobile.
How to Convert SMP to AU
- 1
Choose your SMP file
Upload your .smp file using drag-and-drop or the file browser. Batch mode lets you add multiple files.
- 2
Set format to AU
Select .au from the output options. The converter applies optimal quality settings automatically.
- 3
Run the conversion
Click Convert. Server-side processing means your device stays fast — even for large audio files.
- 4
Get your AU file
Download your converted file instantly. Batch downloads are available as a zip archive.
What Happens When You Convert SMP to AU
Your SMP file is decoded and re-encoded as AU.
Your SMP file is uploaded and validated
The file is decoded (parsed into its raw data)
The data is re-encoded in AU format
The converted file is ready for download
Format Comparison
SMP
.smp file
| Extension | .smp |
| MIME Type | audio/x-smp |
| Category | Audio |
AU
.au file
| Extension | .au |
| MIME Type | audio/basic |
| Category | Audio |
Should You Convert SMP to AU?
When to Convert
- ✓When you need a AU file
Frequently Asked Questions
Should I use SMP or AU?
It depends on your goal. SMP preserves full quality. AU preserves full quality. Choose based on whether file size or quality matters more for your use case.
Is AU higher quality than SMP?
Not necessarily. Converting SMP to AU maintains high quality with CocoConvert's optimised encoder settings. Quality depends on the compression type and settings, not just the format name.
Can I convert SMP to AU on Mac and Windows?
Yes. CocoConvert is a web-based tool that works in all modern browsers — Chrome, Safari, Firefox, Edge — on any operating system including macOS, Windows, Linux, iOS, and Android.
Is CocoConvert free for SMP to AU?
Yes. Free users get 5 conversions per hour (250 MB each). Pro subscribers unlock 100 files per hour, 5 GB per file, and priority processing.
What tools does CocoConvert use for SMP to AU?
CocoConvert uses FFmpeg for audio/video, Sharp for images, and qpdf for documents — the same open-source libraries used by Netflix, YouTube, and major enterprise platforms.
Versions are pinned in our worker Dockerfile and re-built via CI on every change.