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ComfyUI Node: Stem Mixer

Class Name

PlenioStemMixer

Category
Plenio/Audio
Author
jplenio (Account age: 2247days)
Extension
Plenio-Music-Production-System
Latest Updated
2026-10-11
Github Stars
0.04K

How to Install Plenio-Music-Production-System

Install this extension via the ComfyUI Manager by searching for Plenio-Music-Production-System
  • 1. Click the Manager button in the main menu
  • 2. Select Custom Nodes Manager button
  • 3. Enter Plenio-Music-Production-System in the search bar
After installation, click the Restart button to restart ComfyUI. Then, manually refresh your browser to clear the cache and access the updated list of nodes.

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Stem Mixer Description

Sophisticated audio stem integration node for precise mixing control and professional-grade audio production.

Stem Mixer:

The PlenioStemMixer is a sophisticated audio processing node designed to seamlessly integrate multiple audio stems into a cohesive final track. This node is particularly beneficial for audio engineers and music producers who need to manage and manipulate individual audio components, such as vocals, instruments, and effects, before finalizing a mix. The PlenioStemMixer allows you to adjust gain, apply mute or solo settings, and manage compression and muted time ranges for each stem, including a residual component known as the "rest." This ensures that all elements are balanced and harmonized according to your artistic vision. The node is experimental and provides intermediate outputs, allowing for iterative adjustments and refinements. It also supports exporting individual stems marked for saving, facilitating organized project management and efficient workflow. The PlenioStemMixer is a powerful tool for achieving professional-grade audio mixes, offering flexibility and precision in audio production.

Stem Mixer Input Parameters:

stems

This parameter accepts the audio stems and the residual "rest" component from the Separate Stems process. It is crucial for providing the individual audio tracks that will be mixed together. The stems input allows you to work with multiple audio components, ensuring that each element can be individually adjusted and then combined into a final mix. There are no specific minimum or maximum values, but the input should be a valid set of audio stems.

mix

The mix parameter is a JSON-formatted string that specifies the mixer settings. It includes configurations such as gain levels, mute and solo states, compression amounts, and muted time ranges for each stem. If left empty, the mix will be neutral, meaning no adjustments will be made to the input stems. This parameter allows for detailed customization of the audio mix, enabling you to achieve the desired sound balance and effects. The default value is an empty string, indicating a neutral mix.

Stem Mixer Output Parameters:

audio

The audio output parameter provides the final mixed audio track, which is the result of combining the input stems according to the specified mix settings. This output is crucial as it represents the completed audio project, ready for mastering or further processing. The audio output reflects all the adjustments made during the mixing process, including gain changes, effects, and any muted or soloed sections.

report

The report output parameter contains metadata and information about the mixing process, including details about the stems that were marked for saving. This output is important for documentation and project management, as it provides insights into the mixing decisions and settings applied. The report can be used to track changes, ensure consistency, and facilitate collaboration with other audio professionals.

Stem Mixer Usage Tips:

  • To achieve a balanced mix, start with a neutral mix setting and gradually adjust the gain and effects for each stem based on your artistic goals.
  • Utilize the mute and solo features to focus on specific stems during the mixing process, allowing you to fine-tune individual elements without distraction.
  • Regularly export and save stems marked for saving to maintain an organized project structure and ensure that important components are not lost.

Stem Mixer Common Errors and Solutions:

"Stem name is not usable"

  • Explanation: This error occurs when a stem name is not unique, is empty, or uses the reserved name "rest."
  • Solution: Ensure that each stem has a unique, non-empty name that does not conflict with reserved names.

"Stem has the shape; the input has"

  • Explanation: This error indicates a mismatch in the shape of the stem compared to the input audio data.
  • Solution: Verify that all stems have the same shape and dimensions as the input audio to ensure compatibility.

"A separation gives 1 to MAX_STEMS stems, got"

  • Explanation: This error arises when the number of separated stems exceeds the allowed maximum.
  • Solution: Adjust the separation process to ensure the number of stems is within the permissible range.

Stem Mixer Related Nodes

Go back to the extension to check out more related nodes.
Plenio-Music-Production-System
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Stem Mixer