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Discover the industry secrets to recording crisp, rich instrument tracks and vocals in any type of recording environment. Join renowned audio engineer Bobby Owsinski as he walks through the process of miking and tracking a complete song by Underground Sun recording artist Iyeoka and A-list session musicians in a top-of-the-line studio—in a way that is applicable to any recording space and musical genre. Learn how to select the correct microphone and polar pattern for each instrument, with hundreds of revealing listening examples for drums, acoustic and electric guitar, piano, keyboards, and more. These professional techniques offer critical insights for those just getting started in the recording process, and a trustworthy reference guide for more seasoned engineers. Bobby also demonstrates how to monitor and sculpt EQ settings, why and when to process your input signal, and how to choose the right outboard gear for the track. This course employs 360-degree, 3D visualizations that provide an unprecedented perspective of the equipment, players, and microphone placements discussed. Plus, with the raw audio files provided, you can critically listen to every recorded example at home with your DAW of choice at full 24-bit resolution.
The directional response of a microphone is the way the microphone responds to the sounds coming from different directions around it. This is determined by the way the case of the mic is designed, in a Condenser mic, the number of diaphragms it contains. In order to be able to effectively work with different types of mics in different situations, it's important to understand the differences between the typical directional responses. The directional response of a microphone is recorded on what's known as a polar diagram, and it's sometimes described as the polar pattern.
This polar diagram shows the signal pickup level, sometimes shown in decibels, from all angles and at different frequency ranges. To make matters a bit more confusing, all mics have different polar patterns at different frequencies. While a mic can be very directional at one frequency--usually one of the higher frequencies--it can be virtually non directional, or omni-directional, at another. The reason why the polar response is important is it determines how the mic can be used, which can make a big difference in multi-microphone settings where leakage from different sound sources can be a problem.
There are four typical patterns commonly found in microphone design. omni-directional microphone picks up sound equally from all directions. That doesn't mean that the frequency response is equal in all directions though. So, it's still best to point an omni directly at the sounds source for the most accurate pickup. The Cardioid microphone picks up best from the front of the microphone, but still picks up a bit to the side and to the back. This provides a more or less heart-shaped pattern, hence the name cardioid.
A Hypercardioid mic is just a more directional version of a Cardioid mic. That means it's even less sensitive to the sounds coming from the sides, but does pickup a bit from the rear. Figure 8 eight or Bi-directional microphones pick up almost equally in the front and the back, but nearly nothing to each side. The frequency response is usually slightly better on the front side of the microphone, so it sounds a bit brighter from that direction. A Figure 8 mic can be very useful when a high degree of sound rejection is required. Let's review these four polar patterns.
An omni-directional mic picks up sound at 360 degrees around it, although the frequency response is best from the front. Cardioid mic picks up in a heart-shaped pattern. While a Hypercardioid pattern is even less sensitive to sounds coming from the side. And finally, a Figure 8 or Bi-directional pattern picks up equally from the front and back, but almost nothing on the sides.
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