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10 kHz array microphone Type 4957
TYPE 4957
Array Microphone (10 kHz)
Prepolarized Array Microphone for use in systems requiring a large number of microphones, for example, beamforming arrays, STSF measurements, and non-stationary STSF measurements.
Angebot anfordernArray MicrophoneType 4957 is used in combination with other array microphones, and is designed with specified and stable phase-matching over wide ranges of temperature and humidity.
A rugged protection grid provides an integrated heat shield. The microphone is front-vented for pressure equalization.
USE SCENARIOS
- Measurements using:
- Spatial Transformation of Sound Fields (STSF) Type 7688
- Non-stationary STSF Type 7712
- Beamforming Type 7768
- Hand-held array measurements
- Simultaneous recording of time signals in medium to large microphone arrays, for example, simulated pass-by measurements
- Cost-effective in-car measurements
The preamplifier in the array microphone is of the industry-standard CCLD type allowing the use of only one cheap coaxial cable for signal, power supply, and TEDS.
The array microphone is supplied in a hard box with up to six microphones delivered in a standard microphone box. Seven or more microphones are delivered in a multi-microphone suitcase.
- Capacitance
- pF
- Diameter
- ¼
- Dyn. range
- 32 – 134 dB
- Freq. range
- 50 – 10000 Hz
- Inherent noise
- 32 dB A
- Lower limiting frequency -3dB
- Hz
- Optimised
- Array
- Polarization
- Prepolarized
- Polarization voltages
- 0 V
- Pressure coefficient
- dB/kPa
- Sensitivity
- 11.2 mV/Pa
- TEDS UTID
- 127-0-0-0U
- Temperature coefficient
- dB/ºC
- Temperature range
- -10 – 55 ℃
- Venting
- Front
- Weight
- 3.8 gram
- Sound field
- Special
- Input type
- CCLD IEPE
- Microphone type
- Array