PAF to GSRT Converter

Transform PAF recordings into GSRT quickly online

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Better Compatibility

Moving from PAF to GSRT transitions your audio from an obscure encoding to native Grandstream IP phone format — a significant practical improvement.

No Installation

The converter is entirely web-based. Convert PAF to GSRT without downloading or installing any application on your device.

Multiple at Once

Got a collection of PAF recordings? Upload them in one batch and convert the entire set to GSRT in a single session.

How to convert PAF to GSRT

1

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

2

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

3

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

About formats

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
GSRT is a purpose-built ringtone format developed by Grandstream Networks for its line of IP phones and VoIP endpoint devices. Each file begins with a fixed-size header identifying sample rate (typically 8 kHz or 16 kHz), bit depth, and payload length, followed by PCM or mu-law encoded audio data optimized for the small speakers found in desk phones. The design prioritizes minimal decode complexity — Grandstream handsets run on embedded processors with limited memory, so the format avoids transform stages or complex bitstream parsing. Ringtones are usually provisioned through a web management interface or a centralized configuration server, letting IT administrators push branded audio to an entire fleet of phones at once. Although GSRT occupies a narrow niche within enterprise VoIP telephony, its straightforward binary layout means conversion tools can map the payload directly to WAV with minimal effort. Key advantages include rock-solid playback reliability on Grandstream hardware, negligible latency from file read to speaker output, and seamless integration with the provisioning ecosystem for company-wide ringtone deployment.
Initial release: 2002

Frequently Asked Questions

What is the benefit of converting PAF to GSRT?

Since PAF has legacy production format from the Ensoniq PARIS era, switching to GSRT provides compact ringtone storage.

What programs can play GSRT?

You can open GSRT with Grandstream IP phones and SoX.

Will I lose audio quality converting PAF to GSRT?

PAF stores voice at very low quality. Moving to GSRT makes the audio playable everywhere — quality stays consistent with the source.

Does this converter work on mobile devices?

Absolutely. Since conversion happens in the browser, any device with internet access and a modern browser will work.

How long does PAF to GSRT conversion take?

Most conversions finish within seconds. Processing time depends on recording length, but the cloud-based engine handles it quickly.

What if my PAF recording is very long?

The converter handles recordings of various lengths. For very large or numerous files, premium plans provide extended capacity.