Audio Compression Explained

Understanding Bitrate
Bitrate determines how much audio data is preserved. Higher bitrates = better quality but larger files.

Bitrate Guidelines

• **64 kbps**: Acceptable for speech, podcasts

• **128 kbps**: Good for most listening on mobile

• **192 kbps**: High quality, noticeable improvement

• **320 kbps**: Highest quality, CD-like sound

Lossless vs Lossy
**Lossless Compression (WAV, FLAC):**

• No data loss

• Perfect sound quality

• Larger file sizes

• Best for archival

**Lossy Compression (MP3, AAC):**

• Data loss for smaller size

• Good enough for most listeners

• Smaller file sizes

• Better for distribution

Format Recommendations

• **MP3**: Universal compatibility, good quality

• **AAC**: Better quality at same bitrate as MP3

• **FLAC**: Lossless, archival quality

• **WAV**: Uncompressed, professional audio

Best Practices
1. Start with original audio quality
2. Choose bitrate based on use case
3. Test different bitrates with target audience
4. Keep original files for re-encoding
5. Document conversion settings