SPX to TXW Converter

Convert Speex recordings to Yamaha TX-16W sampler format

Drop files here. 1 GB maximum file size or Sign Up
to
Facebook Amazon Microsoft Tesla Nestle Walmart L'Oreal

Vintage Sampler Ready

Convert Speex recordings to the Yamaha TX-16W format — load voice samples into this classic hardware sampler.

No Hardware Needed

Generate TXW files from SPX without the physical sampler. Our cloud handles the format conversion.

Secure Files

SPX uploads are removed after processing. TXW files are deleted within 24 hours.

How to convert SPX to TXW

1

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

2

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

3

Let the file convert and you can download your txw 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
TXW is the native audio sample format of the Yamaha TX16W, a rack-mounted digital sampler released by Yamaha in 1988. Each TXW file stores a single audio sample captured by the TX16W's 12-bit analog-to-digital converters, with selectable sampling rates of 16.7 kHz, 33.3 kHz, and 50 kHz in mono. The format was engineered to work within the sampler's architecture — 1.5 MB of onboard RAM expandable via memory cards — so files are compact and structured for quick loading from 3.5-inch floppy disks. Despite its 12-bit resolution, the TX16W earned a loyal following among electronic musicians who prized its distinctive warm, slightly gritty character that imparted a recognizable sonic texture to sampled material. The format preserves loop point data and tuning metadata, enabling seamless playback of sustain loops within the hardware. While TXW files are not directly playable in most modern software, conversion utilities and the SoX audio toolkit can transform them into contemporary formats like WAV or AIFF. For vintage synth enthusiasts and sample library curators, TXW remains an important archival format.
Developer: Yamaha Corporation
Initial release: 1988

Frequently Asked Questions

Why convert SPX to TXW?

TXW is the native sample format for the Yamaha TX-16W hardware sampler — a classic instrument prized by electronic musicians.

What is the Yamaha TX-16W?

The TX-16W is a vintage rackmount sampler from Yamaha, popular in the late 1980s for its warm sound character and sampling capabilities.

What uses TXW files?

The Yamaha TX-16W sampler directly and emulators or sample conversion tools that support the TX-16W format.

Is TXW relevant today?

TXW is niche but valued by vintage synth collectors and lo-fi producers who seek the TX-16W characteristic sound.

Is it free?

Yes — SPX to TXW is free on convertio.co.