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Normalize Audio

Even out a quiet or inconsistent recording — peak-normalize or apply a fixed gain.

Select an audio file

Even out a quiet or inconsistent recording — peak-normalize to −1 dBFS, or apply a fixed gain. Runs in your browser.

點擊選擇，或將檔案拖曳至此

如何 Normalize Audio

  1. 1

    Add your audio

    Drop in the recording you want to even out.

  2. 2

    Choose peak or gain

    Peak-normalize to −1 dBFS, or apply a fixed gain in dB.

  3. 3

    Normalize and download

    Click Normalize audio and save the result.

Related PDF tools

Trim AudionewCut an audio file to just the part you want, with a visual waveform.Merge AudionewJoin multiple audio files into one, in the order you set, with an optional gap.Audio ConverternewConvert MP3, WAV, M4A, AAC, FLAC or OGG to MP3 or WAV — entirely in your browser.WAV to MP3newCompress a WAV to MP3 at the bitrate you choose, in your browser.

Normalize Audio — 常見問題

What does peak normalize do?+

It finds the single loudest sample and scales the whole file so that peak sits at −1 dBFS — as loud as possible without clipping.

Peak normalize vs. adjust gain?+

Peak normalize is automatic and based on the file's own level. Adjust gain applies a fixed dB change you choose, up or down.

Is this loudness (LUFS) normalization?+

No — it's peak-based, which is simpler and safe. True LUFS loudness matching needs a heavier analysis pass.

Is my file uploaded?+

No. Analysis and processing run entirely in your browser.

你們會把我的檔案上傳到伺服器嗎？+

不會——這裡的每個工具都完全在你的裝置上處理檔案，不會向伺服器上傳任何內容。唯一的例外是 AI 工具，它們會把擷取的文字（而非檔案本身）傳送給 Claude 來完成工作。

有檔案大小限制嗎？+

我們沒有人為設下限制，但由於處理過程在你的瀏覽器中進行，非常大的檔案（超過 500MB 或 1000 頁）會受你裝置記憶體的限制，而非我們的限制。