TYPE 4144

1" Pressure-field Microphone, Ext. Polarized

Pressure-field microphone exceptionally suited for coupler and other laboratory type measurements over a frequency range of 2.6 Hz To 8 kHz.

Solicitar oferta

Type 4144 is a 1" pressure-field microphone, that is, a microphone where the damping of the diaphragm is such that the pressure frequency response is flat over a wide frequency range. Hence no correction is needed to the pressure response below 8 kHz. 

The use of pressure-field microphones is recommended where measurement of the local pressure is of interest, for instance for coupler measurements or measurements at walls or surfaces. The excellent stability of Type 4144 combined with its low inherent noise and high sensitivity makes it the perfect choice for coupler measurements and other laboratory type measurements.

USE SCENARIOS

  • Coupler measurements
  • Audiometer calibration
  • Low-frequency, low-level measurements
  • Laboratory standard microphone

CALIBRATION

The sensitivity of Type 4144 can be calibrated at frequencies: 

Insert voltage calibration can be performed using Microphone Preamplifier Type 2673 Adaptor UA 0786

It is possible to measure the pressure field response withElectrostatic Actuator UA 0023

Capacitance
pF
Diameter
1
Dynamic range
11 – 146 dB
Frequency range
– Hz
Inherent noise
9.5 dB A
Lower limiting frequency -3dB
Hz
Polarization voltages
V
Pressure coefficient
dB/kPa
Sensitivity
mV/Pa
Temperature coefficient
db/ºC
Temperature range
– C
Weight
gram