Microphone Hub

Coincident Pair Stereo Microphone: 7 Tips to Optimal Recording

Coincident Pair Stereo Microphone

Coincident pair stereo microphone is a type of stereo microphone setup in which two microphones are placed very close to each other, usually so close that their diaphragms touch or almost touch. Most of the time, the microphones are placed next to each other and pointed toward the sound source.

Coincident pair stereo microphone setups are often used to get a clearer or more accurate stereo image because the microphones can simultaneously pick up the same sound waves when they are close together. They are often used in recording studios and other places where a clear stereo image is needed.

There are a few different types of coincident pair stereo microphone configurations, such as the “ORTF” configuration, in which the microphones are placed at an angle of about 110 degrees and 17 cm (6.7 inches) apart, and the “NOS” configuration, in which the microphones are placed at an angle of about 90 degrees and 30 cm (12 inches) apart. Each configuration has its qualities and can be used differently, depending on the desired effect.

Feature of a Coincident pair stereo microphone

Here are some things that a coincident pair of stereo microphones might have:

Directional microphones: Many coincident pair stereo microphones use directional microphones, like cardioid or super-cardioid microphones, which are sensitive to sounds coming from a certain direction and can help cut down on background noise and ambiance in the recording.

Frequency response: The range of frequencies that a microphone can pick up is called its frequency response. A microphone with a wide frequency response can pick up both low and high sound frequencies.

Noise floor: A microphone’s noise floor is the amount of background noise or “self-noise” it makes when it’s not used to pick up a sound. When you record with a microphone that has a low-noise floor, there will be less background noise.

Dynamic range: A microphone’s dynamic range is between the loudest and softest sounds it can pick up without getting distorted. With a wide dynamic range, a microphone can record a wide range of sound levels without distorting.

Compatibility with audio recording devices: It’s important to ensure that the concordant pair of stereo microphones you choose works with your audio recording device or mixer. Some microphones may need extra parts, like a preamp or an interface, to work with some devices.

Adjustable microphone angles: Some coincident pair stereo microphones let you change the angle at which the microphones are pointed, which can change the stereo image and the sound of the recording.

High-quality materials and construction: Coincident pair stereo microphones are often made with high-quality materials and are built to last because they are often used in professional recording environments where reliability is important.

Pros of a Coincident Pair Stereo Microphone

  • The sound waves from the source are caught almost simultaneously for a clearer stereo image.
  • It can capture music or other audio sources with left and right channels, such as a live concert or podcast.
  • Possible mic angle modifications.
  • Stereo microphones may be less susceptible to background noise and ambiance.

Cons of a Coincident Pair Stereo Microphone

  • Better recording may require extra setup and location.
  • Single-channel microphones are cheaper.
  • If a mono recording is sufficient or required, it may need to be more adaptable.
  • It may not catch an event’s ambiance as well as other stereo microphones.

What is the ORTF stereo recording technique, and how does it work?

The ORTF stereo recording technique is a method for capturing stereo audio using a pair of cardioid microphones placed at a specific angle and distance from each other. The microphones are spaced 17 cm apart and angled at 110 degrees. This arrangement simulates the spacing and angle between human ears, resulting in a natural and immersive stereo image.

What are the advantages of using the ORTF stereo recording technique?

The ORTF technique offers several advantages, including a wider stereo image compared to other techniques like X/Y, excellent mono compatibility, and a realistic representation of sound sources in space. It’s widely used for capturing acoustic music, nature sounds, and live performances.

How do I set up microphones in the ORTF configuration?

To set up microphones in the ORTF configuration, position two cardioid microphones 17 cm apart (approximately the width of human ears) and angle them at 110 degrees. Ensure that the capsules of both microphones are at the same height and aligned horizontally.

Can I adjust the stereo width with the ORTF technique during post-production?

The ORTF technique captures audio with a fixed stereo width, typically producing a wide stereo image. While it’s not as adjustable as some other stereo recording methods like Mid-Side (M/S), you can still make minor adjustments to the stereo image during post-production using panning and EQ

What types of microphones are suitable for the ORTF technique?

Cardioid microphones are commonly used for the ORTF technique due to their directional pickup patterns and the ability to capture sound from the front while rejecting sound from the sides and rear. Condenser microphones with a flat frequency response are often preferred for accuracy.

Are there any specific applications where the ORTF technique excels?

The ORTF technique excels in capturing the spatial characteristics of sound in a variety of applications. It’s commonly used for recording acoustic instruments, choirs, live performances, and field recordings of nature sounds, providing a sense of depth and immersion in the recordings.

Leave a Comment

Your email address will not be published. Required fields are marked *

Scroll to Top