POLAR PATTERNS
Omnidirectional
Omni means "all" or "every," hence the name for a mic that picks up sound evenly from all directions. Since they are equally sensitive to
sounds originating from all angles, omnidirectional microphones are very useful for capturing ambient noise. They are recommended
for situations where the mic must remain fixed while the sound source is moving, such as a lapel mic that captures a speaker's voice as
he moves about. The disadvantage is that an omni mic cannot be aimed away from undesired sources, such as PA speakers, which may
cause feedback.
Specifications:
Element: Condenser
Polar pattern: Omni / cardioid / super cardioid
Frequency response: 30Hz-18 kHz
Sensitivity: -38dB ± 3dB (0dB=1V/Pa at 1 kHz)
Output impedance: 100
Ω
± 30% (at 1 kHz)
Self noise: 24dB A
Max. input SPL: 135db (at 1 kHz ≤1% THD)
SNR: 70dB
Power requirement: 9 – 52V phantom power
Customer Service:
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866-849-3049
Cardioid
Cardioid microphones are most sensitive to sound coming from in front of the microphone, and also to a lesser extent from the sides.
Sound coming from behind the microphone will be greatly attenuated. This makes the cardioid polar pattern most suitable for
recording individual instruments or vocals within a group, and essential for miking a live performance.
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Omnidirectional
(at 1 kHz)
Cardioid
(at 1 kHz)
Super cardioid
Super cardioid microphones have a narrower area of sensitivity than cardioid mics, offering more side rejection and less rear rejection.
Because they pick up a small amount of sound from directly behind, it's important to place monitor speakers to the side facing the
"dead spots." Super cardioids are highly suited to very loud stage environments as they are very directional with high gain before
feedback. They're great for zeroing in on that perfect sweet spot for instruments, and are commonly used to mic drums and pianos.
For live recording sessions where isolation is important, super cardioid mics minimize signal bleed between a vocalist and his
own instrument.
Cardioid
(at 1 kHz)
