Online Spectrum Analyzer
sound spectrum analyzer, spectrogram, tone generator
Online Spectrum Analyzer launched on August 25, 2026 with 2 votes, #5,788 of 23,274 launches that month.
What it does
Free online spectrum analyzer and spectrogram for audio files and microphone input. Measure frequency, dBFS, peaks, and export PNG or CSV locally in your browser.
Free online audio spectrum analyzer for files and microphone input. Measure peak frequency, harmonics, noise, hum, clipping, LUFS, and True Peak in your browser.
Analyze audio files or microphone input with a real-time spectrum and spectrogram. Check clipping, noise, hum, LUFS loudness, and True Peak. Load a reproducible fault recording into the analyzer above, then compare what you see with the PDF report it produces. This reproducible 48 kHz WAV deliberately contains clipping, broadband noise, and 50/60 Hz mains hum. Inspect it for free and compare the visible signal with the known input map—without buying first. The intervals below come from the sample generator, not from a claimed detection result. In Pro, selecting a detected timestamp pauses playback and places the blue playhead on the complete spectrogram. The report separates standards-based…from onlinespectrumanalyzer.com
Does a similar job
all alternatives →- IVI've built a spectrogram analyzer web app2023 · webfft.net · ▲244
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
A virtual oscilloscope using Web Audio and live microphone input2016 · academo.org · ▲42This online virtual oscilloscope allows you to visualise live sound input and get to grips with how to adjust the display. If you find this useful, our online spectrum analyser may also be of interest to you.
- ASA spectrogram app in less than 100 lines of HTML and JavaScript2019 · simplespectrogram.app · ▲21
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