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Audio spectrum and spectrogram

Hann FFT1024/2048/4096; selected channel and time range; Hz/dBFS and logarithmic frequency option.

  • Runs in your browser
  • No upload
  • Check before download

Audio stays on this device. No upload or microphone recording. Hann FFT1024/2048/4096; selected channel and time range; Hz/dBFS and logarithmic frequency option. Up to128time slices; strongest-bin spectrogram cells, not musical transcription. Files up to 16 MiB, mono or stereo at 32, 44.1 or 48 kHz, up to 60 seconds and 24 MiB of PCM; the 20-second deadline includes reading and native decoding. DSP exports 16-bit WAV, drops source metadata and warns before clipping. The original bytes stay available. MP3 ID3 edits: up to 120 seconds, ID3v2.3 or 2.4, tags up to 2 MiB, PNG or JPEG cover up to 1 MiB and 4 MP; the audio frames are unchanged. Unsupported, encrypted or signed data is rejected. Supported formats: WAV (PCM 16, 24 or 32 bit, or float32 with |x| up to 16), MP3 (MPEG-III, ID3v2.3 or 2.4) and M4A (AAC-LC).

Supported model and limits

How to use this tool

  1. Choose audio

    Audio stays on this device. No upload or microphone recording. Files up to 16 MiB, mono or stereo at 32, 44.1 or 48 kHz, up to 60 seconds and 24 MiB of PCM; the 20-second deadline includes reading and native decoding. DSP exports 16-bit WAV, drops source metadata and warns before clipping. The original bytes stay available. MP3 ID3 edits: up to 120 seconds, ID3v2.3 or 2.4, tags up to 2 MiB, PNG or JPEG cover up to 1 MiB and 4 MP; the audio frames are unchanged. Unsupported, encrypted or signed data is rejected.

  2. Supported model and limits

    Hann FFT1024/2048/4096; selected channel and time range; Hz/dBFS and logarithmic frequency option. Up to128time slices; strongest-bin spectrogram cells, not musical transcription.

  3. Analyze

    Original file · Hann FFT1024/2048/4096; selected channel and time range; Hz/dBFS and logarithmic frequency option. Up to128time slices; strongest-bin spectrogram cells, not musical transcription.

Supported model and limits

Original file

Files up to 16 MiB, mono or stereo at 32, 44.1 or 48 kHz, up to 60 seconds and 24 MiB of PCM; the 20-second deadline includes reading and native decoding. DSP exports 16-bit WAV, drops source metadata and warns before clipping. The original bytes stay available. MP3 ID3 edits: up to 120 seconds, ID3v2.3 or 2.4, tags up to 2 MiB, PNG or JPEG cover up to 1 MiB and 4 MP; the audio frames are unchanged. Unsupported, encrypted or signed data is rejected.

Supported model and limits

Hann FFT1024/2048/4096; selected channel and time range; Hz/dBFS and logarithmic frequency option. Up to128time slices; strongest-bin spectrogram cells, not musical transcription.

How can I check this result?

Compare the channel, time range and FFT size you selected with the Hz/dBFS columns in the CSV. The strongest-bin cells are not a transcription of notes.

Some audio workflows use Mediabunny1.60.0 (MPL-2.0). Copyright notices and original license · Download preferred TypeScript source1.60.0