There is "hiss" or noise in my stems.

Introduction: At times, Logic Pro users have reported encountering white noise (hiss) in their stems, which becomes more noticeable when all stems are played back together. This issue doesn't occur when running stems manually when the solo button is used.  This is to be expected.

Understanding the Issue: Many Logic Pro users may not be aware that certain plugins and sample libraries intentionally introduce noise, such as hiss or white noise, to simulate the characteristics of analog devices. When you manually run stems, you typically will solo specific tracks, effectively isolating the individual elements of your project. However, when you use Auto-Bounce, it doesn't solo anything; instead, it uses the Track On/Off buttons to determine what to bounce. As a result, the noise signal from a single track or AUX channel can persist in the signal chain, leading to a more prominent white noise issue when all stems are played together.

It's essential to note that you will encounter the same issue if you bounce stems manually without utilizing the solo button and instead use the Track On/Off buttons to make your selections. This is precisely what Auto-Bounce is doing.

Common Culprits: The most likely sources of white noise in your stems are plugins that mimic analog hardware characteristics. These plugins often include settings that generate noise to emulate the real-world imperfections of devices like Delays, Tape Emulators, Reverbs, or Amp emulations. To fix this issue, you'll need to identify the parameter causing noise in the offending plugin and disable it.

Solving the Issue: To eliminate white noise in your stems, follow these steps:

1. Identify the Culprit: 

2. First, identify the plugin causing the white noise. Pay close attention to plugins like Delays, Tape Emulators, Reverbs, and Amp emulations.

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4. Disable Noise Generation: Locate the specific setting responsible for generating noise and disable it. This may involve adjusting parameters like "Noise" or "Analog Character."

Alternatively, you can insert a noise gate in the insert slot under the noise-generating plug-in and adjust the threshold only to open when a signal passes through it and remain closed the rest of the time.

1. Test and Fine-Tune: After disabling noise generation, bounce your stems again and play them together. You may need to fine-tune the plugin settings to achieve the desired sound while eliminating unwanted white noise.

Examples of Plugins that Generate Noise:

Here are a few examples of plugin types commonly known to generate noise:

• Reverb Plugins: Many reverb plugins include settings for emulating the warmth and character of physical spaces, which can introduce noise.
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• Tape Emulation Plugins: These often simulate the characteristics of analog tape machines, including the inherent noise associated with them.
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• Amp Emulation Plugins: Amp emulators aim to replicate the sound of vintage amplifiers, which may include noise generation settings.
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• Delay Plugins: Certain delay plugins introduce noise to mimic the imperfections of vintage delay units.

  Kontakt Instruments: Some Kontakt instruments have settings to create noise.

If you encounter any difficulties during this process, don't hesitate to contact our customer support for more help.