Serving audio to users in regions with expensive data or slow internet connections.
how to optimize audio settings for better quality at low bitrates.
UI sound effects (like a long notification chime) in mobile apps. 4. Technical Comparison 48kbps AAC (.m4a) 128kbps MP3 (Standard) File Size ~0.35 MB per minute ~0.95 MB per minute Efficiency Audio Detail Optimized for voice/mids General purpose Compatibility Universal (iOS/Android/Web) If you'd like, I can help you: Convert a larger file to this specific size/quality.
WhatsApp or Telegram often use similar bitrates for voice notes to ensure instant sending even on 2G/3G networks.