Definition of Otoacoustic Emissions: Otoacoustic Emissions is an audio energy generated from the cochlea, released through the ossicular chain and the tympanic membrane and released into the external auditory canal (Kemp, 1986). It reflects that the cochlea can not only passively sense the sound signal, but also has the function of generating sound energy actively.
Otoacoustic emission is the product of the movement of hair cells in the cochlea, the modulation of the outer hair cell to the basement membrane, which amplifies the weak acoustic signal. Its clinical significance is that it provides us with a means of detecting cochlear amplification and functional integrity of outer hair cells.
Specification
Name
MSLHS01
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
Detailed images
Packing & Delivery
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