Why does my exported audio sound quieter than it did in the editor?

Start by making the comparison fair rather than adjusting track levels. Use the same playback device and a controlled listening level for both versions: play the project, note the listening level, then play the exported file through the same device at that level. [S1]

In current Audacity, the Playback Meter’s volume control affects how loudly the project is heard through your playback system. It does not alter the project audio and is not applied to exports. [S1] So if that control was turned up while editing, the project could sound louder than the exported file even when the export itself is not quieter. Avoid treating the meter’s peak reading as a direct measure of perceived loudness; its RMS display corresponds more closely to perceived loudness. [S1]

For a useful first pass, don’t change the mix yet. Check the listening comparison, what material was exported, and how the file is being played.

Check the export selection. Audacity’s export dialog can export the full project mix, selected audio, or a loop region. [S2] If you intended to export the whole piece but selected only one section, the file may not represent the project you were listening to. Confirm the intended range before exporting again.

For example, suppose your project has a quiet opening and a louder chorus. If you auditioned the chorus but exported a selected range containing only the opening, the file may seem quieter without the export having reduced the volume. That’s an illustrative possibility, not a claim about your project.

A simple note can prevent confusion: “Compare project range: [start–end]. Export range: [full mix / selected audio / loop region].” Make sure the two entries describe the same material.

Review the export dialog for the intended material, format, mono or stereo choice, sample rate, and—when exporting a format such as MP3—bit rate. [S2] Check these against the requirements of the place or app where the file will be used, if it provides any. The Audacity manual recommends following the destination’s stated format, file-size, or loudness requirements when available. [S2]

These checks help establish that you exported the intended material with the chosen settings; they do not prove that every export or playback system handles loudness the same way. [S2] If you listen in an app that may normalize playback, look up that app’s documentation and its relevant playback setting. Don’t assume normalization happened—or that it affects the file itself—without evidence from that app’s documentation.

Try this sequence:

1. Play the project and exported file on the same device, at a controlled listening level. [S1]
2. Check whether Audacity’s Playback Meter volume control made the project louder during editing; it does not carry into the export. [S1]
3. Confirm that the exported range matches the project section you compared. [S2]
4. Note the format, mono or stereo setting, sample rate, and any applicable bit rate; compare them with the destination’s stated requirements. [S2]
5. Check the playback app’s documentation for any loudness-normalization behavior before changing the mix.

Copyable comparison note (fill in the brackets): “Project range: [range]. Export range: [full mix / selected audio / loop region]. Playback device and level: [details]. Export format and settings: [details]. Playback app and normalization setting: [details or not checked]. Difference heard: [brief description].”

If the difference remains, these notes give you a clearer basis for deciding what to investigate next. The Audacity manual explains the playback control and export choices, but it does not establish how every other app or playback system handles loudness. [S1] [S2]