--- title: Panako 2.0 - Updates for an acoustic fingerprinting system canonical: https://0110.be/posts/Panako_2.0_-_Updates_for_an_acoustic_fingerprinting_system markdown_url: https://0110.be/posts/Panako_2.0_-_Updates_for_an_acoustic_fingerprinting_system.md id: 498 published_at: '2021-11-07T00:00:00Z' updated_at: '2025-11-29T14:26:10Z' author: Joren tags: - name: ISMIR markdown_url: https://0110.be/tags/ISMIR.md - name: Panako markdown_url: https://0110.be/tags/Panako.md - name: UGent markdown_url: https://0110.be/tags/UGent.md --- # Panako 2.0 - Updates for an acoustic fingerprinting system At the online [ISMIR 2021 conference](https://ismir2021.ismir.net/lbd/) I have presented [updates to Panako](https://0110.be/files/attachments/498/2021.ismir-lbd-panako-updates.pdf), an audio fingerprinting system: > *This work presents updates to Panako, an acoustic fingerprinting system that was introduced at ISMIR 2014. The notable feature of Panako is that it matches queries even after a speedup, time-stretch or pitch-shift. It is freely available and has no problems indexing and querying 100k sea shanties. The updates presented here improve query performance significantly and allow a wider range of time-stretch, pitch-shift and speed-up factors: e.g. the top 1 true positive rate for 20s query that were sped up by 10 percent increased from 18% to 83% from the 2014 version of Panako to the new version. The aim of this short write-up is to reintroduce Panako, evaluate the improvements and highlight two techniques with wider applicability. The first of the two techniques is the use of a constant-Q non-stationary Gabor transform: a fast, reversible, fine-grained spectral transform which can be used as a front-end for many MIR tasks. The second is how near-exact hashing is used in combination with a persistent B-Tree to allow some margin of error while maintaining reasonable query speeds.* Together with the paper there is also a [poster](https://0110.be/files/attachments/498/panako_updates_poster.pdf) and a short video presentation which explains the work:
- [2021.ismir-lbd-panako-updates.pdf](https://0110.be/files/attachments/498/2021.ismir-lbd-panako-updates.pdf) - [panako\_updates\_poster.pdf](https://0110.be/files/attachments/498/panako_updates_poster.pdf) - [poster-movie.mp4](https://0110.be/files/attachments/498/poster-movie.mp4)