AIFF to SOU Converter

Convert AIFF audio to SOU format — fast and simple

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Direct AIFF-to-SOU Path

Go from AIFF to SOU without intermediate steps. The converter handles the codec transformation automatically.

Any Device, Any OS

Convert audio from your laptop, tablet, or phone. The browser-based tool works on every operating system.

Optimal Quality

Audio content is preserved to the maximum extent the output format supports — clean, faithful conversion.

How to convert AIFF to SOU

1

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

2

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

3

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

About formats

AIFF (Audio Interchange File Format) was developed by Apple in 1988, drawing its structural design from Electronic Arts' IFF standard. As an uncompressed audio container, AIFF stores linear PCM data at full CD quality — typically 16-bit at 44.1 kHz — preserving every detail of the original recording without lossy encoding. The format organizes content into chunks that can also carry metadata such as markers, instrument definitions, and comments. Professional audio engineers on macOS frequently rely on AIFF because it guarantees bit-perfect fidelity through every stage of editing and mastering. One significant advantage is zero generational loss: unlike MP3 or AAC, repeated saves never degrade the signal. Another strength is seamless integration with Apple's professional tools, including Logic Pro and GarageBand, where AIFF serves as a native working format. The container supports multiple sample rates and bit depths up to 32-bit, accommodating high-resolution workflows that exceed CD-quality specifications. For anyone prioritizing lossless integrity over storage efficiency, AIFF remains a dependable choice across the recording industry.
Developer: Apple Inc.
Initial release: 1988
SOU is a raw audio format designation that functions as an alias for unsigned 8-bit PCM data (u8) in the SoX audio processing framework. Files with the .sou extension contain headerless, uncompressed audio samples stored as unsigned 8-bit integers — each byte represents a single amplitude value from 0 to 255, with 128 as the silence midpoint. Because there is no header, playback parameters such as sample rate and channel count must be specified externally. The default assumption is typically mono at 8000 Hz, though the data can represent any rate the recording hardware supported. The u8 encoding that SOU aliases is one of the simplest possible digital audio representations, predating structured audio containers like WAV and AIFF. Raw unsigned PCM was commonly produced by early sound cards and digitizers in the late 1980s and early 1990s, when storage constraints and limited processing power made headerless formats a practical choice. One advantage is absolute simplicity: SOU files can be read by any program capable of basic file I/O, with no parsing of container structures or metadata decoding required — useful for embedded systems, hardware diagnostics, and educational contexts where audio fundamentals are being explored. The format's minimal overhead also means that conversion to any modern container is lossless and instantaneous, since the raw PCM samples can be wrapped in a WAV or AIFF header without any transcoding.
Developer: SoX Contributors
Initial release: 1991

Frequently Asked Questions

Why convert AIFF to SOU?

SOU provides raw 8-bit audio data. Convert AIFF when your application requires minimal-overhead PCM input.

What programs can open SOU files?

SoX and raw audio editors can open SOU files. It is a simple format for basic audio data.

Can I convert AIFF to SOU on my phone?

Yes — the converter runs in any mobile browser. Works on both iOS and Android without installing an app.

Are there customization options for the SOU output?

The converter lets you tweak audio settings such as bitrate, sample rate, and channels before processing.

Does converting AIFF to SOU cost anything?

Basic conversions are available at no charge. Premium plans unlock faster processing and higher file size limits.