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Audio Spectrum Analyzer

Visualize audio frequencies with real-time spectrum analyzer and zoomable spectrogram. Analyze frequency content, harmonics, and time-frequency characteristics.

Upload Audio File

Privacy: All processing happens in your browser. No files are uploaded to any server.

How to Use

  1. Upload an audio file (MP3, WAV, OGG, etc.)
  2. Play the audio to see the real-time frequency spectrum
  3. View the spectrogram to see how frequencies change over time
  4. Adjust FFT size for frequency resolution
  5. Change color schemes for better visualization
  6. Zoom in/out on the spectrogram to examine specific frequencies or time ranges
  7. Download the spectrogram as an image

Understanding the Visualizations:

  • Spectrum: Shows current frequency content (vertical bars = amplitude at each frequency)
  • Spectrogram: Time on X-axis, Frequency on Y-axis, Color = Amplitude
  • Bright colors: Strong frequency components
  • Dark colors: Weak or absent frequency components

About Spectrum Analysis

Spectrum analysis reveals the frequency content of audio signals. The spectrum analyzer shows real-time frequency distribution, while the spectrogram provides a time-frequency view showing how the frequency content evolves over time.

Common Uses:
  • Music Analysis: Identify harmonics, overtones, and frequency patterns
  • Audio Quality: Detect frequency cutoffs, noise, and artifacts
  • Voice Analysis: Examine formants and pitch variations
  • Sound Design: Understand frequency distribution for mixing and EQ

Other Audio Utilities

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