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The result is a realistic stereo field that has reasonable compatibility with mono playback. Since the cardioid polar pattern rejects off-axis sound, less of the ambient room characteristics are picked up. This means the mics can be placed further away from the sound sources, resulting in a blend that may be more appealing.
Zoom H2n sound recording test. The device can record in MS (mid-side), XY, MS+XY (two-channel) and MS+XY (four-channel) modes. If the 2.00 firmware update has been applied, it can also record in the 360-degree ambisonic format, along a horizontal plane.
There are some complications with the playback of binaural recordings through headphones. The sound that is picked up by a microphone placed in or at the entrance of the ear channel has a frequency spectrum that is very different from the one that would be picked up by a free-standing microphone.
Frequencies coming in sideways can reach only one microphone and will not interfere. Therefore, Jecklin disk works reasonably well when converted to mono. Jecklin disk also gives phase shifts and amplitude differences matching well with what a real pair of ears would hear at this position and therefore is well suited for headphone playback.
A new type of laser microphone is a device that uses a laser beam and smoke or vapor to detect sound vibrations in free air. On August 25, 2009, U.S. patent 7,580,533 issued for a Particulate Flow Detection Microphone based on a laser-photocell pair with a moving stream of smoke or vapor in the laser beam's path.
The Soundfield microphone used to make Ambisonic recordings can be adjusted to mimic two microphones of any pattern at any angle to each other, including a Blumlein pair. In his early experiments at EMI with what he called " binaural " sound, Blumlein did not use this actual technique because he did not have access to figure-eight microphones.
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Free field reciprocity calibration (to give the free-field response, as opposed to the pressure response of the microphone) follows the same principles and roughly the same method as pressure reciprocity calibration, but in practice is much more difficult to implement. As such it is more usual to perform reciprocity calibration in an acoustical ...