Audio Interchange File Format (AIFF) is Apple's uncompressed audio format, offering CD-quality sound for professional audio production.
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.
Reach for AIFF when your priority is professional audio production, music recording — its uncompromising quality ensures every detail is preserved.
Reach for SPX when your priority is voip telephony, voice chat, speech compression — its efficient compression makes sharing fast and storage minimal.
Learn more about AIFF and SPX formats in our detailed guide.
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AIFF (AIFF audio) - Audio Interchange File Format, professional uncompressed audio. Best for professional audio production, music recording.
SPX (SPX) - Speex, open-source speech codec for VoIP and voice. Ideal for voip telephony, voice chat, speech compression.
Yes, GoConvertFile offers free conversion of AIFF to SPX for files up to 100MB. No registration required.
Most AIFF to SPX conversions complete within seconds for standard-sized files. Larger files may take longer depending on the conversion complexity.
SPX is ideal for voip telephony, voice chat, speech compression. Speex, open-source speech codec for VoIP and voice
Yes, converting AIFF to SPX uses lossy compression, which reduces file size by discarding some visual data. Set quality to 85-95% for a good balance of quality and file size.
SPX files are typically 50-80% smaller than AIFF files because SPX uses efficient lossy compression. The exact reduction depends on quality settings.