Online Spectrum Analyzer

Visualize audio frequency spectrum in real-time with this online analyzer. Upload files or use microphone input.

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About This Tool

This online spectrum analyzer tool provides professional-grade audio frequency analysis capabilities directly in your browser. Upload audio files (WAV, MP3, OGG) or use real-time microphone input to visualize the frequency spectrum using Fast Fourier Transform (FFT) algorithms. The tool displays detailed frequency distribution graphs, identifies dominant frequencies, and provides numerical analysis of audio signals. Perfect for audio engineers, musicians, and sound designers who need to analyze audio frequency content without specialized software.

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How to Use

Choose input method: upload an audio file or use microphone input
Adjust analysis parameters like FFT size, window function, and frequency range
Click 'Analyze Spectrum' to process the audio
View the interactive spectrum visualization with frequency peaks highlighted
Download the analysis results as PNG image or CSV data

Frequently Asked Questions

Find Quick Answers

What audio formats are supported?

The tool supports WAV, MP3, and OGG audio formats for file uploads. For real-time analysis, it uses your device's microphone input.

How accurate is the frequency analysis?

The tool uses professional-grade FFT algorithms with configurable parameters (up to 8192-point FFT) for precise frequency resolution. Accuracy depends on audio quality and selected analysis settings.

Can I analyze live audio from my microphone?

Yes, the tool supports real-time microphone input for live spectrum analysis. You'll need to grant microphone permissions when prompted.

What is the maximum file size for upload?

The tool can process audio files up to 50MB. For larger files, consider using audio editing software to extract shorter segments for analysis.

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