S3M to HE-AAC - Online Audio Converter
Convert S3M to HE-AAC online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.
About S3M to HE-AAC
Convert S3M to HE-AAC. S3M (Scream Tracker 3) sequences 16 digital channels with effects. HE-AAC adds spectral band replication for efficient low-bitrate streaming. Needs an HE-AAC decoder; plain AAC players may play only half the bandwidth..
Why convert S3M to HE-AAC?
- Smaller files with HE-AAC lossy compression.
- Keep quality where supported.
- Private, no upload - runs in your browser.
S3M vs HE-AAC
| Codec | S3M | AAC (HE) |
|---|---|---|
| Compression | sequence | lossy |
| Sample behavior | Note events - no audio samples | Quality set by bitrate |
| Typical use | S3M (Scream Tracker 3) sequences 16 digital channels with effects. | HE-AAC adds spectral band replication for efficient low-bitrate streaming. |
When not to convert S3M to HE-AAC
- Skip HE-AAC for archival masters: lossy compression discards detail, so keep the S3M original.
- Keep a master copy: repeated exports stack small losses, so archive S3M before batch HE-AAC shares.
Limits
Starting point: S3M - S3M (Scream Tracker 3) sequences 16 digital channels with effects. Stereo panning quirks differ by player; check the mix. Needs an HE-AAC decoder; plain AAC players may play only half the bandwidth. Encode HE-AAC (AAC (HE)) from S3M at 256k for music or 128k for speech, starting from the master.
How conversion works
Conversion runs entirely in your browser with FFmpeg WASM. Files never leave your device.