How a 30-Line Heuristic Fixes Beat-Tracking Algorithms Getting BPM Wrong

·1 views

Popular beat-tracking tools like Essentia and Librosa frequently misidentify the tempo of modern pop and trap-influenced tracks, reporting half or double the actual BPM due to ambiguity in the metric hierarchy. The Weeknd's Blinding Lights, for example, is widely accepted at 171 BPM but is routinely returned as 85 BPM by these algorithms. The error occurs because beat trackers analyse onset envelopes and tempograms, and for tracks with halftime drum patterns, both the true tempo and its half-value appear as valid mathematical peaks. Spotify's now-deprecated audio_features endpoint suffered the same flaw, causing entire genres to be catalogued at incorrect tempos. A developer has published a 30-line heuristic that cross-checks reported BPM against onset rate, energy, and danceability signals to detect and correct these half-time and double-time errors.

Read the full story at DEV Community

This is an AI-generated summary. ShortSingh links to the original source for the complete article.

Discussion (0)

Developer builds browser page displaying opening lines of classic literary works

A developer has launched a personal project called 'Opening Lines of Famous Literary Works', showcasing the first lines of well-known books as a browser start page. The idea had been in development for several years, stemming from the creator's habit of collecting notable literary opening lines. After experimenting with various visual styles, the developer settled on a minimalist design that lets the text take center stage. The collection has grown to nearly 60 opening lines, allowing users to refresh the page for a new quote each visit. The project was shared on Hacker News, where it received modest early attention.

0 comments Read more at Hacker News

ProgrammingHacker News ·

Debate grows over whether AI tools are eroding human critical thinking

A discussion is emerging around whether people are increasingly delegating their cognitive tasks to artificial intelligence tools. The concern centers on the potential long-term effects of relying on AI for thinking, reasoning, and decision-making. Critics suggest that outsourcing mental effort to AI could weaken independent thought and problem-solving skills over time. The topic has gained traction in tech and intellectual communities, prompting reflection on how humans should balance AI assistance with maintaining their own cognitive abilities.

0 comments Read more at Hacker News

ProgrammingDEV Community ·

Microsoft Shuts Down Fox Tempest Malware-Signing Service Tied to Ransomware Gangs

Microsoft announced on May 19, 2026, the dismantling of Fox Tempest, a criminal operation that exploited the company's own Artifact Signing system to issue fraudulent code-signing certificates to malware. The service generated over 1,000 fake certificates and charged cybercriminals between $5,000 and $9,000 per signing, earning millions in revenue. Fox Tempest provided ongoing signing infrastructure to ransomware groups behind families including Qilin, Akira, and INC, enabling their malware to bypass security defenses by appearing as trusted software. Microsoft seized associated websites and shut down hundreds of virtual machines running the service, though previously issued certificates may remain valid until revoked or expired. The operation compromised thousands of systems globally, including at least 12 machines belonging to Microsoft itself, with victims spanning healthcare, critical infrastructure, and enterprise sectors.

0 comments Read more at DEV Community

ProgrammingDEV Community ·

Step-by-Step Guide: Build a JavaScript UI Framework From Scratch

A tutorial published on DEV Community walks developers through building a working JavaScript UI framework from first principles. The guide explains that a UI framework is fundamentally about representing interface elements as plain JavaScript data objects rather than HTML. It introduces a simple three-field object structure — tag, attributes, and children — to describe DOM elements in memory. A core function called construct() is then built to convert these descriptions into real browser DOM nodes. The tutorial aims to demystify framework concepts like virtual DOM and rendering by showing that the underlying logic requires no special magic.

0 comments Read more at DEV Community