MP3
For music, podcasts, voice notes, and everyday sharing.
Local browser analysis
Audio Waveform & Spectrum Analyzer
Inspect waveforms, a spectrogram, peak, RMS, dynamic range, and dominant frequency online. Your file is decoded and analyzed locally in the browser.
No file uploadWaveformSpectrogram
Step 1
Add an audio file
Drop one file here or browse your device. No upload or account needed.
Audio analysis guide
Supported audio formats
Read common compressed, lossless, and recording formats. Whether a file can be decoded ultimately depends on its internal codec and your browser.
WAV
Uncompressed PCM audio for editing, mixing, and recording checks.
M4A / AAC
Efficient audio commonly used on mobile and Apple devices.
FLAC / OGG / Opus
For lossless libraries, open audio, and efficient voice files.
How to analyze audio online
No installation, account, or file upload is required.
- 01
Add your audio
Drop in a file or choose one from your device.
- 02
Review waveform and levels
Use peak, RMS, dynamic range, and dominant frequency to understand the recording quickly.
- 03
Find a moment to inspect
Click the waveform to seek; the position line stays in sync with the spectrogram while playing.
- 04
Export a metrics report
Download a JSON report without the source audio for notes or sharing.
Common audio analysis use cases
Podcast and interview checks
Spot clipping, inconsistent levels, steady noise, or problematic takes before publishing.
Music and mix references
Inspect dominant energy, harmonics, and dynamics to inform EQ and mastering decisions.
Video voice-over and courses
Find silence, pops, and noisy sections before moving into the edit timeline.
Teaching and acoustics demos
Show how sound changes over time and frequency with clear visual aids.
Privacy first: your audio is not uploaded
MediaBunny and a Web Worker decode and analyze audio in the current browser. Source files are never sent to MediaKit servers; clearing the file or closing the page releases local object URLs and Worker resources.
FAQ
Audio analyzer FAQ
Are my audio files uploaded?
No. Processing stays in the browser on this device.
Why cannot I open some audio files?
An extension does not guarantee the codec inside a file. Use a current browser, or convert the file to MP3, WAV, or M4A first.
What do the spectrogram colors mean?
Brighter color means more energy at that time and frequency. Low frequencies are at the bottom and high frequencies are at the top.
Which FFT size should I choose?
1024 is faster, 2048 is a good default, and 4096 reveals finer frequency detail at the cost of more analysis time.
Does the exported report include my audio?
No. It contains only the file name, basic properties, and calculated level metrics.
Related tools and tutorials
Normalize audio volume
Bring music or recordings closer to a consistent average level.
Open toolAudio equalizer
Shape brightness and low-end balance by frequency band.
Open toolTrim audio
Remove mistakes, unwanted passages, or long silence.
Open toolAudio volume normalization guide
Learn about peak, loudness, and safe headroom.
Open tool