I've built a spectrogram analyzer web app
I've built a spectrogram analyzer web app launched on May 2, 2023 with 244 votes, #124 of 4,910 launches that month and more than 95% of that year's launches. The site was not reachable when checked in September 2026.
In plain words
This is a web-based spectrogram analyzer that converts audio into visual frequency representations. Built for anyone interested in sound analysis, music production, or audio visualization, it runs directly in a browser without requiring installation. The tool lets users examine the frequency content of audio files in real time, making it useful for hobbyists, musicians, and those curious about how sound breaks down into its component frequencies.
written from the facts on this page · September 2026
Does a similar job
all alternatives →- ASA spectrogram app in less than 100 lines of HTML and JavaScript2019 · simplespectrogram.app · ▲21
- RTReal-time bandpass filter bank audio spectogram2020 · grz0zrg.github.io · ▲14
Web Audio Studio – A Visual Debugger for Web Audio API GraphsMar 2026 · webaudio.studio · ▲64Hi HN, I’ve been working on a browser-based tool for exploring and debugging Web Audio API graphs. Web Audio Studio lets you write real Web Audio API code, run it, and see the runtime graph it produces as an interactive visual representation. Instead of mentally tracking connect() calls, you can inspect the actual structure of the graph, follow signal flow, and tweak parameters while the audio is playing. It includes built-in visualizations for common node types — waveforms, filter responses, analyser time and frequency views, compressor transfer curves, waveshaper distortion, spatial…
YouTube Musical Spectrum – visualizer for YouTube with musical notes2021 · github.com · ▲72Dear, This is an update from first submission [1]. New features: - add Hz scale - add YT Music support - add microphone recording - add scale (x and y) options to reduce CPU usage [1] https://news.ycombinator.com/item?id=28135562
Online Spectrum AnalyzerAug 2026 · onlinespectrumanalyzer.com · ▲2sound spectrum analyzer, spectrogram, tone generator
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