Acoustic Testing Facilities

In house anechoic room for microphone carachterization

 

EQUIPMENT:

SENSOR = BRÜEL & KJÆR  4138 

PREAMPLI= BRÜEL & KJÆR 2669 

AMPLI= BRÜEL & KJÆR NEXUS 2690; software version Boot: 1.10, application 2.50.

WH3219 = BRÜEL & KJÆR frequency extension (140kHz -1dB; 200kHz -3 dB).

Calibrator = Temna 72-2680 94dB / 114dB 

Sampler ADC: Ultramic384K 384kHz sampling rate 16 bit

Software = Multi-Instrument Pro 3.7

 

Waveform generator:

Owon AG2052F Bandwidth 50Mhz 300 MS/s Resolution 14 bit

Ultrasonic emitter: 

– US-4112 Sobreton

– Ribbon loudspeaker

10 band ultrasonic equalizer Dodotronic

 

MULTIMETER

Fluke True RMS 289