GSM to PAF Converter

Re-encode GSM speech into PARIS Audio Format online

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Ensoniq PARIS Format

Move GSM telephony recordings into the PAF format — designed for the Ensoniq PARIS digital recording ecosystem.

Browser Conversion

No PARIS software or Ensoniq tools needed. Convert GSM to PAF directly in your web browser via our cloud.

Automatic Cleanup

All GSM uploads are erased after processing. PAF outputs are automatically removed within 24 hours.

How to convert GSM to PAF

1

Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.

2

Choose paf or any other format you need as a result (more than 200 formats supported)

3

Let the file convert and you can download your paf file right afterwards

About formats

GSM 06.10 (Full Rate) is the foundational speech codec of the Global System for Mobile Communications standard, ratified by ETSI in 1991 and deployed across hundreds of cellular networks worldwide. Operating at a fixed 13 kbit/s, the algorithm applies Regular Pulse Excitation with Long-Term Prediction (RPE-LTP) to compress 20 ms frames of 8 kHz mono speech into just 33 bytes each. This approach models the vocal tract as a linear predictive filter, encodes the excitation signal, and leverages pitch periodicity for further reduction — tuned to deliver intelligible voice under the bandwidth constraints of early digital mobile channels. The codec powers not only GSM telephony but also many VoIP applications, voicemail systems, and IVR platforms that benefit from its low bitrate. Three concrete advantages stand out. First, extraordinary compression: one minute of speech fits in roughly 100 KB, enabling efficient storage and transmission. Second, universal tooling — libraries such as libgsm and SoX handle encoding and decoding on every major platform. Third, a royalty-free patent landscape that has encouraged adoption across open-source telephony projects like Asterisk and FreeSWITCH.
Initial release: 1991
PAF (Paris Audio File) is the native audio format of the Ensoniq PARIS (Professional Audio Recording Integrated System) digital audio workstation, developed by Ensoniq in the late 1990s. PARIS was a hardware/software DAW that earned a loyal following among recording engineers for its warm analog-like sound and reliable operation, with PAF serving as its primary working file container. The format stores uncompressed PCM audio at 16-bit or 24-bit resolution and standard professional sample rates (44.1, 48, and 96 kHz), preserving full fidelity without lossy compression. PAF uses a straightforward binary layout — a compact header followed by interleaved sample data — enabling efficient real-time read and write during recording sessions. One notable advantage is support for both big-endian and little-endian byte ordering, reflecting the PARIS system's cross-platform roots on Mac and PC. After Ensoniq's acquisition by E-mu Systems and then Creative Technology, the PARIS DAW was discontinued, but PAF files remain important for studios with archived projects in this format. Tools like SoX and libsndfile can read and convert PAF files, ensuring long-term accessibility.
Developer: Ensoniq
Initial release: 1998

Frequently Asked Questions

What is PAF?

PAF is the PARIS Audio Format from Ensoniq, used with PARIS digital recording hardware and software for music production.

Is PAF the same as FAP?

Both are associated with the Ensoniq PARIS system. PAF and FAP refer to closely related PARIS audio file variants.

Why convert GSM to PAF?

PAF conversion lets you import GSM speech recordings into PARIS-compatible workflows and Ensoniq digital audio environments.

What tools support PAF?

PARIS workstation software and SoX are the primary tools for working with PAF files. Consumer media players do not support it.

Is my data kept private?

GSM uploads are deleted after conversion. PAF results are purged from our servers within 24 hours.