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Master Pink Noise with the QU-24: A Step-by-Step Guide

Jan 30, 2024

When it comes to achieving the perfect audio mix, pink noise can be an invaluable tool for sound technicians and audio enthusiasts alike. In this article, we'll explore how to use this audio phenomenon with the popular QU-24 digital mixer.

What is Pink Noise?

Before diving into the practical application, it's important to understand the basics of pink noise. Sometimes referred to as 1/f noise, pink noise refers to a signal that possesses equal energy per octave. In other words, it's a type of sound that maintains a consistent frequency distribution, making it incredibly useful for audio calibration and testing.

Using the QU-24 with Pink Noise

Now that we're familiar with the concept of pink noise, let's dive into how to use it with the QU-24 digital mixer. The QU-24, part of Allen & Heath's popular QU series, offers an on-board signal generator that comes equipped with pink noise functionality.

Step 1: Navigate to the QU-24's signal generator

Power on your QU-24 digital mixer and press the 'SETUP' button on the top-right corner of the console. This will take you to the main setup screen. From there, press the 'Sig Gen' (Signal Generator) tab, located on the bottom-right corner of the touchscreen.

Step 2: Select the Pink Noise option

Once you're in the signal generator menu, you'll see several options in the 'Type' section. Select 'Pink Noise' from the list of options, and you'll immediately hear the pink noise emitting from the mixer.

Step 3: Route the Pink Noise

Now that you have the pink noise activated on your QU-24, you'll need to route it to various outputs to analyze the frequency response of your speakers or identify any issues in your audio system. To do this, simply use the on-screen touchscreen to route the pink noise to the desired outputs, such as the Main LR, Matrix, or individual Mix outputs.

Step 4: Analyze and adjust

As you send pink noise to each output, use headphones or a Real Time Analyzer (RTA) to analyze and identify any frequency imbalances in your system. You can then use the QU-24's built-in EQ, compressor, and other processing tools to make the necessary adjustments to achieve the desired audio balance.

By following these steps, your QU-24 will now allow you to optimize your audio system using the powerful calibration tool that is pink noise. As you continue to familiarize yourself with the QU-24's numerous functionalities, pink noise is sure to become an indispensable part of your audio toolbox.

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