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Vocal / Instrumental Balance

· Last updated：2026-08-02

Measure and adjust vocal level relative to an instrumental bed, with a transparent loudness report.

Details

What this tool helps you do

Use two already-separated files for the most predictable result, or provide a full mix and let the local HT-Demucs vocal separator derive vocal and accompaniment stems. The default target is vocals 3 dB above the instrumental LUFS. Gain is capped at ±12 dB, clipping is guarded, and optional final LUFS normalization is reported separately.

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Written by the Elysia Tools team

Tool usage guide

Learn when to use this tool, what it supports, and how real users apply it.

Key facts

Category
Media
Input types
file, select, number, checkbox
Output type
file
Sample coverage
4
API ready
Yes

Overview

Vocal / Instrumental Balance measures vocal and instrumental LUFS, adjusts the vocal level toward a chosen offset, and exports a balanced audio file with a transparent loudness report.

When to use

  • Balance a vocal stem against an instrumental track before publishing or mixing.
  • Adjust a full mix when separate vocal and instrumental files are unavailable.
  • Create an MP3, WAV, FLAC, M4A, or OGG output with optional final LUFS normalization.

How it works

  1. 1Upload separate vocal and instrumental audio files, or choose Full mix mode with one complete mix.
  2. 2The tool measures the relative loudness of the vocal and instrumental material.
  3. 3Set the desired vocal offset, with a range from -6 dB to +12 dB; the default is +3 dB.
  4. 4Optionally normalize the final loudness to a target between -30 and -5 LUFS, then export the selected format.

Use cases

  • Prepare karaoke or backing-track mixes with a clearly audible vocal.
  • Correct inconsistent vocal levels in demos, song mixes, and rehearsal recordings.
  • Check vocal-to-instrumental loudness before delivering an audio file.

Examples

1. Balance two prepared stems

Music producer

Background

A producer has separate vocal and instrumental files but the vocal sits too low against the backing track.

Problem

Raise the vocal toward a consistent loudness gap without changing the instrumental reference level.

How to use

Upload the vocal and instrumental files, select Separate vocal + instrumental files, and keep the vocal offset at 3 dB.

sourceMode: stems; vocalOffsetDb: 3; normalizeFinalLoudness: false; outputFormat: mp3

Outcome

The tool adjusts the vocal toward 3 dB above the instrumental and exports a balanced MP3 with loudness measurements.

2. Estimate balance from a full mix

Singer-songwriter

Background

A singer-songwriter only has a finished stereo mix and wants to check whether the vocal is prominent enough.

Problem

Derive estimated vocal and accompaniment levels from the full mix and apply a moderate vocal lift.

How to use

Upload the complete mix, select Full mix (Demucs), set the vocal offset to 2 dB, and choose WAV output.

FAQ

What audio inputs can I use?

You can upload separate vocal and instrumental audio files, or provide one full mix in Full mix mode.

What is the default vocal balance?

The default target places the vocal 3 dB above the instrumental LUFS.

Can the tool separate vocals from a full mix?

Yes. In Full mix mode, local HT-Demucs derives estimated vocal and accompaniment stems.

Is final loudness normalization required?

No. It is optional and can target a LUFS value from -30 to -5.

Which output formats are available?

You can export MP3, WAV, FLAC, M4A (AAC), or OGG Vorbis.

Hub

Karaoke and Stem Separation Tools

Separate vocals and accompaniment, clean the resulting stems, set a controlled balance, and prepare a karaoke or remix-ready delivery.

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sourceMode: mix; vocalOffsetDb: 2; normalizeFinalLoudness: false; outputFormat: wav

Outcome

HT-Demucs estimates the vocal and accompaniment, applies the requested balance adjustment, and produces a WAV file with a loudness report.

3. Normalize a balanced export

Podcast editor

Background

An editor has a vocal-led music segment that needs a consistent final loudness for delivery.

Problem

Balance the vocal and then normalize the final output to a selected LUFS target.

How to use

Upload separate stems, set the vocal offset to 3 dB, enable final loudness normalization, and enter -16 LUFS.

sourceMode: stems; vocalOffsetDb: 3; normalizeFinalLoudness: true; targetLufs: -16; outputFormat: flac

Outcome

The vocal is balanced against the instrumental, and the final FLAC output is normalized toward -16 LUFS with the adjustment reported separately.