Operating environment noise  | ≤50 dbSPL  | 
Test Method  | TEOAE,DPOAE  | 
TEOAE performance:  | |
Assessment Method  | Noise - weighted average ,effective signal peak calculation  | 
sound stimulation  | Click(Nonlinear)  | 
sampling rate  | 48KHz  | 
Stimulus frequency  | 0.8kHZ~5kHZ  | 
Stimulation level  | 60,70,83dBspl  | 
Display Content  | Statistical waveform, measurement progress, signal to noise ratio, total reaction energy, Similarity degree,  | 
DPOAE performance:  | |
Assessment Method  | Phase statistics,Noise - weighted average ,effective signal peak calculation  | 
sound stimulation  | pure tone  | 
sampling rate  | 48KHz  | 
Test frequency  | f1:1kHZ~6kHZ f2: 1.5kHz,2.01kHz, 3.98kHz,6kHz  | 
Display Content  | Listening graph, measurement progress, DPOAE detection level, signal to noise ratio  | 
Probe performance:  | |
Probe cable  | ø3.8mm,8 core round wire  | 
Probe body  | 37* 20 *12.6 mm  | 









                    







  
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