SPX files are built around lossy compression. Designed for voip telephony, voice chat, speech compression, they use the audio/speex MIME type and typically range from varies by content.
Audio Interchange File Format (AIFF) is Apple's uncompressed audio format, offering CD-quality sound for professional audio production.
Reach for SPX when your priority is voip telephony, voice chat, speech compression — its efficient compression makes sharing fast and storage minimal.
Reach for AIFF when your priority is professional audio production, music recording — its uncompromising quality ensures every detail is preserved.
Learn more about SPX and AIFF formats in our detailed guide.
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SPX (SPX) - Speex, open-source speech codec for VoIP and voice. Best for voip telephony, voice chat, speech compression.
AIFF (AIFF audio) - Audio Interchange File Format, professional uncompressed audio. Ideal for professional audio production, music recording.
Yes, GoConvertFile offers free conversion of SPX to AIFF for files up to 100MB. No registration required.
Most SPX to AIFF conversions complete within seconds for standard-sized files. Larger files may take longer depending on the conversion complexity.
AIFF is ideal for professional audio production, music recording. Audio Interchange File Format, professional uncompressed audio
No, converting SPX to AIFF does not cause additional quality loss — AIFF uses lossless compression. However, any artifacts already present in the original SPX file will persist in the AIFF output.
AIFF files are typically 2-5x larger than equivalent SPX files because AIFF preserves all pixel data. This is expected and necessary for lossless quality.