SPX to FAP Converter

Decode Speex audio into PARIS FAP audio format online

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PARIS DAW Format

Bring your Speex recordings into the FAP format used by Ensoniq PARIS professional digital audio workstations.

No DAW Required

Generate FAP files from SPX without installing PARIS software — our cloud service handles the conversion.

Private Files

SPX uploads are deleted immediately. FAP outputs are removed from servers within 24 hours.

How to convert SPX to FAP

1

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

2

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

3

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

About formats

Speex is an open-source audio codec purpose-built for speech compression, developed by Jean-Marc Valin under the Xiph.Org Foundation. First released in October 2002, it targets voice-over-IP, conferencing, and any scenario where spoken word needs to travel efficiently over a network. SPX files wrap Speex-encoded audio inside an Ogg container, pairing the codec's speech optimization with Ogg's streaming capabilities. Three sampling rates are supported — narrowband at 8 kHz, wideband at 16 kHz, and ultra-wideband at 32 kHz — along with variable bitrate encoding that adapts in real time to speech complexity. A standout advantage is its patent-free, BSD-licensed nature, which allowed developers to embed it freely in both commercial and open-source products. Speex also bundles acoustic echo cancellation, noise suppression, and automatic gain control, features that rival codecs typically delegate to external libraries. Although its creators officially recommend Opus as a successor since 2012, Speex remains deployed in legacy VoIP systems, archived recordings, and embedded devices where its lightweight decoder footprint is still valued.
Initial release: October 15, 2002
FAP is a byte-swapped variant of the PAF (Paris Audio File) format associated with the Ensoniq PARIS digital audio workstation, a recording environment popular among project-studio engineers in the late 1990s. Where standard PAF stores sample data in big-endian order, FAP reverses the byte layout for little-endian architectures, enabling direct memory mapping on Intel-based processors without a runtime byte-swap penalty. The underlying payload is uncompressed linear PCM at up to 24-bit depth and 96 kHz sampling, preserving full studio-grade fidelity. Because there is no lossy coding stage, recordings survive unlimited edit cycles with zero generational loss — a critical property during tracking and mixing. The SoX command-line utility maintains read/write support for FAP, making it the most accessible tool for converting legacy PARIS sessions to modern formats. Despite its niche origins, FAP demonstrates solid engineering: the header is minimal and deterministic, eliminating ambiguity that sometimes plagues chunk-based containers. Advantages include bit-perfect audio preservation, fast I/O on x86 hardware due to native byte order, and straightforward interoperability with raw PCM tools.
Developer: Ensoniq
Initial release: 1998

Frequently Asked Questions

Why convert SPX to FAP?

FAP is the PARIS Audio format used with Ensoniq PARIS digital audio workstations — converting from SPX enables use in this environment.

What is the PARIS DAW?

PARIS was a professional digital audio workstation by Ensoniq that used its own audio file format for recording and editing.

What opens FAP files?

PARIS DAW software and SOX can handle FAP files. Converting to WAV enables use in modern DAWs.

Is FAP compressed?

No — FAP stores uncompressed PCM audio, so files will be larger than compressed SPX sources.

Is it free?

Yes — SPX to FAP conversion is free on convertio.tools.