Free AU to SPX Converter

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AU

Audio Interchange File Format

Audio Interchange File Format (AIFF) is an audio file format developed by Apple Inc. for storing sound data. It is a container format that stores audio data as well as metadata.

Main usage

AIFF is commonly used for storing uncompressed audio data on Mac OS and iOS devices. It is also used for storing audio data in professional audio production and editing applications.

Main features

High-quality audio
Supports up to 32-bit audio
Supports up to 8 channels of audio

SPX

Ogg Speex

Ogg Speex is an audio compression format designed for speech and is based on the open source Speex codec.

Main usage

Ogg Speex is mainly used for voice over IP (VoIP) applications, such as Skype, and for audio streaming applications, such as online radio.

Main features

Low bitrate
High quality speech compression
Supports variable bitrate