What Is The Blumlein Pair Technique?

Over the past few decades, there has been a great evolution in different types of recording methods. Although some might not realize it, good microphone placement and techniques are crucial for high-quality audio recordings and have significantly altered how music is listened to. It’s vital to be aware of various miking procedures that can elevate your work regardless of the kind of recording you’re performing, such as audio for a movie or music. This article takes a closer look at the Blumlein pair technique, one of the finest methods that engineers still use today. 

Origin of the Blumlein Technique

The Blumlein pair technique originates in Alan Blumlein’s initial stereo recording attempt. In 1931, Blumlein was an engineer for EMI and created a sonic reproduction of an abbey road soundstage. The stereo recording became a reality at this point. Blumlein called his initial attempts a “binaural” sound. He used omnidirectional microphones to capture the stereo effect because “figure 8” configuration microphones were unavailable. However, he presented a theoretical and crude use of the Blumlein pair employing directional microphones in his 1931 patent application filed in the UK. As a result, Blumlein also created the mid-side recording method, another stereo recording method that studio pros frequently employ. 

Types of Microphones for the Blumlein Pair Technique

Stereo ribbon microphones have been produced by many companies, especially for Blumlein pair applications. These include AES, Royer, and B&O. That being said, you may use almost any high-end ribbon or condenser microphone for this application. Manufacturers have advised using Blumlein array configuration of stereo condenser microphones, including AKG and Neumann. Additionally, you may employ microphones with adjustable pattern settings.

How Is the Blumlein Pair Created?

Most diagrams do not show that the Blumlein pair is oriented perpendicularly to the sound source on a vertical axis. If you were using this method to record a band performing, the mics would be arranged one on top of the other. Additionally, the front ends of both microphones must be positioned to form a 90-degree angle and as close to one another as possible. When this is accomplished, the intersection of these two lines should be in the direction of your sound source. Similar to the human ear, this method produces a wide feeling of space and a direct center image. Your audience will genuinely experience the performance as though they were present in the same room as you. 

Are There Any Disadvantages to This Technique

The Blumlein pair will not work well for any purpose other than as a “room microphone.” Too much ambient noise and a loss of low-frequency tones might also arise from placing your pair too far away from your music source, giving you subpar sound quality. Finding the ideal location or spot for the Blumlein pair is the most challenging aspect of the setup; try different positions and heights until you discover it. 

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At lmnl studios, we have the ideal recording studios accessible 24/7, whether your goal is to further your hobby or provide a new base of operations for your clientele. Our studios are open around the clock and fitted with top-tier equipment to ensure you receive the optimal sound possible. 

Book a recording session today and create your next masterpiece.