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PCM to GSM - Online Audio Converter
Convert PCM to GSM online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.
Convert PCM to GSM
Drop PCM audio here or click to select
PCM
GSM (GSM)
About PCM to GSM
Convert PCM to GSM. PCM is raw pulse-code samples with no container or headers. GSM 06.10 encodes European mobile speech at 13 kbps. Carrier framing can offset timing; verify duration..
Why convert PCM to GSM?
- Smaller files with GSM lossy compression.
- Keep quality where supported.
- Private, no upload - runs in your browser.
PCM vs GSM
| Codec | PCM 16-bit | GSM |
|---|---|---|
| Compression | uncompressed | lossy |
| Sample behavior | Full quality kept | Quality set by bitrate |
| Typical use | PCM is raw pulse-code samples with no container or headers. | GSM 06.10 encodes European mobile speech at 13 kbps. |
When not to convert PCM to GSM
- Skip GSM for archival masters: lossy compression discards detail, so keep the PCM original.
- Keep a master copy: repeated exports stack small losses, so archive PCM before batch GSM shares.
Limits
Starting point: PCM - PCM is raw pulse-code samples with no container or headers. Sample rate and width must be set by hand since headers carry none. Carrier framing can offset timing; verify duration. Encode GSM (GSM) from PCM 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.
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FAQ
How do I convert PCM to GSM?
Drop your PCM file onto this page, choose quality and codec settings, then click Convert. The result downloads as GSM instantly. All processing runs in your browser.
What codec is used for GSM?
The default codec for GSM is GSM. You can change audio parameters in Advanced mode.
How do you store my files?
We do not store any processed audio. All conversion happens entirely in your browser using FFmpeg WASM.