# wavesurfer.js 7.12.11

- Product: wavesurfer.js (https://whatsnew.fyi/product/wavesurfer-js)
- Vendor: katspaugh
- Date: 2026-07-17
- Version: 7.12.11
- Original notes: https://github.com/katspaugh/wavesurfer.js/releases/tag/7.12.11
- Permalink: https://whatsnew.fyi/product/wavesurfer-js/releases/7.12.11

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

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- **fixed** — Avoid closing a closed AudioContext in Decoder
- **fixed** — Prune per-region subscriptions from plugin array on remove in regions
- **fixed** — Prevent TypeError when Spectrogram plugin is destroyed during active render
- **fixed** — Prevent dB-to-color mapping wraparound in Spectrogram high-energy regions
- **changed** — Make the main-thread FFT fallback opt-out and re-create failed workers in Spectrogram
- **added** — Add Praat-style display pre-emphasis and automatic gain to Spectrogram

* 7.12.11
* fix(Decoder): avoid closing a closed AudioContext (#4336) by @mjlbach
* fix(regions): prune per-region subscriptions from plugin array on remove (#4339) by @jens-lilt
* fix(Spectrogram): prevent TypeError when plugin is destroyed during active render (#4335) by @Copilot
* docs: clarify left/right default plotting for stereo audio (#4338) by @Copilot
* fix(Spectrogram): prevent dB-to-color mapping wraparound in high-energy regions (#4333) by @Copilot
* fix(Spectrogram): make the main-thread FFT fallback opt-out and re-create failed workers (#4331) by @koyukan 
* feat(Spectrogram): Praat-style display pre-emphasis and automatic gain (#4330) by @koyukan 

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[![npm](https://img.shields.io/npm/v/wavesurfer.js)](https://www.npmjs.com/package/wavesurfer.js/v/7.12.11)