3 Ways to Increase Microphone Sensitivity for LedFX [2024]

Key Takeaways
  • By increasing microphone sensitivity, the LEDs react more accurately to music, capturing beats and subtle sounds for a dynamic light display.
  • You can directly adjust microphone sensitivity in LedFX or indirectly modify it using gain settings in WLED, catering to different setup needs and preferences.
  • Adjusting microphone sensitivity allows for the customization of light patterns based on sound levels, enabling real-time changes for an enhanced visual experience.

Imagine setting up a mesmerizing LED light show synced perfectly with your favorite music, only to find out that the microphone sensitivity isn’t picking up the beats as you’d hoped. Frustrating, right?

In such scenarios, increasing the microphone sensitivity becomes crucial to ensure your LedFX experience matches your expectations. In this post, let’s delve deep into customizing the Microphone sensitivity for LedFX.

Increase Mic Sensitivity LedFX
How to Increase Mic Sensitivity LedFX

Why Increase Microphone Sensitivity for LedFX?

Here are a few reasons why you might want to boost your microphone sensitivity for LedFX:

  • Enhanced Synchronization between LED lights and Music Beats: When you increase the microphone sensitivity, the LED lights become more reactive to the rhythm and tempo of the music. This heightened sensitivity allows the lights to react more quickly and accurately to each beat.
  • Better Responsiveness to Subtle Audio Nuances: Every song contains a mixture of subtle audio nuances, from soft whispers to gentle instrumentals. By boosting the microphone sensitivity, LedFX becomes more adept at capturing these delicate sounds, ensuring that even the smallest audio variations are translated into captivating light patterns.
  • Customization of Light Patterns based on Varying Sound Levels: One of the key advantages of increasing microphone sensitivity is the ability to customize light patterns based on the intensity of the music. With higher sensitivity levels, LedFX can detect changes in sound levels more accurately, allowing you to create dynamic light shows.

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How to Increase Microphone Sensitivity for LedFX:

There are a couple of ways, both direct and indirect, through which you can increase the microphone’s sensitivity for LedFX.

Method 1: Use the Built-in Sensitivity Option in LedFX

Stereo Mix captures audio in high fidelity directly from the source, ensuring that the LED lights receive the highest quality audio input for synchronization.

Using Stereo Mix helps to filter out unnecessary background noises that may be picked up by the microphone, such as ambient sounds or microphone feedback. By focusing solely on the audio output from the device’s applications, LedFX can better distinguish between music beats and extraneous noise, resulting in a cleaner and more refined light show performance.

  1. Open LedFX’s Dashboard and navigate to Settings.
  2. Choose the desired Audio Input Device, preferably a Stereo Mix for optimal output.
    Choose Audio Input Source LedFX
    Choose Audio Input Source LedFX
  3. Head to the Devices section and select the device you wish to modify.
  4. Click on the edit button and choose an effect from the list.
    Edit Device Settings LedFX
    Edit Device Settings LedFX
  5. On the next screen, Adjust the Sensitivity slider to your preference and click Set Effect.
    Adjust Sensitivity LedFX
    Adjust Sensitivity LedFX

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Method 2: Modify Sensitivity Indirectly using Gain in WLED:

Gain refers to the amplification or adjustment of the audio signal’s volume level. In the context of LEDFX and WLED setups, gain controls the sensitivity of the microphone or audio input device. Increasing gain amplifies the input signal, making the microphone more sensitive to sound and resulting in a stronger response from the LED lights.

  1. Set up WLED on your ESP board.
  2. Open WLED’s application and add a new device by choosing the + icon
    Add New Device WLED
    Add New Device WLED

  3. Discover available lights and select your device.
    Discover Devices WLED
    Discover Devices WLED
  4. Navigate to the Config tab > LED Preferences.
  5. Choose LED output type and GPIO pin numbers, based on your available devices.
    Configure Settings WLED
    Configure Settings WLED
  6. Go to Sound Settings and adjust Gain on a scale of 0 to 100.
    Adjust Gain WLED
    Adjust Gain WLED
  7. Modify microphone type and pin numbers as needed.
  8. Reboot the device for changes to take effect.

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Method 3: Modify Sensitivity using WLED:

Sensitivity, in the context of LEDFX and WLED setups, refers to the level of responsiveness of the microphone or audio input device to incoming sound signals.

  1. Open WLED and go to the Sync tab.
  2. Locate the Sensitivity slider.
    Adjust Sensitivity WLED
    Adjust Sensitivity WLED
  3. Adjust the slider to your desired sensitivity level.
  4. Reboot the device for the changes to apply.

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Increasing microphone sensitivity for LedFX can significantly enhance your LED light show experience, ensuring better synchronization and responsiveness to the music beats. With the abovementioned methods, you can easily customize sensitivity settings to match your preferences and create a stunning visual.


What is microphone sensitivity?

Microphone sensitivity refers to the level at which a microphone captures sound. Increasing sensitivity amplifies the microphone’s ability to pick up softer sounds.

Will increasing sensitivity affect sound quality?

Increasing sensitivity may lead to higher sensitivity to background noise, but it generally does not affect sound quality if adjusted appropriately.

Can I adjust sensitivity in real-time while the LED lights are running?

Yes, you can adjust sensitivity settings in real-time using LedFX or WLED applications without interrupting the light show.


Kamil Anwar

Kamil is a certified MCITP, CCNA (W), CCNA (S) and a former British Computer Society Member with over 9 years of experience Configuring, Deploying and Managing Switches, Firewalls and Domain Controllers also an old-school still active on FreeNode.