Influence of in situ, sound-level calibration on distortion-product otoacoustic emission variability.
Influence of in situ, sound-level calibration on distortion-product otoacoustic emission variability.
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DOI：
10.1121/1.2931953
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发表时间：
2008-07
期刊：
影响因子：
--
通讯作者：
Gorga MP
中科院分区：
文献类型：
--
作者：
Scheperle RA;Neely ST;Kopun JG;Gorga MP
在声压级（SPL）的耳内校准过程中，驻波会引起误差，影响刺激幅度和畸变产物耳声发射（DPOAE）水平。声强级（SIL）和前向声压级（FPL）是理论上不受驻波影响的两种测量值。SPL、SIL和FPL的原位校准通过确定DPOAE水平对一系列刺激频率（1 - 8 kHz）和水平（20 - 60 dB）的探针插入深度（深、"浅"）的灵敏度进行比较。操纵探头插入深度，目的是在发射探头处用驻波最小值改变频率，从而在SPL校准期间引入可变性。在校正由耳道阻抗对从耳蜗传播的发射的影响引起的偶然变化后，评价插入之间的DPOAE水平的绝对差异。三因素方差分析（ANOVA）发现刺激水平，刺激频率和校准方法的显着的主效应，以及涉及校准方法的显着交互作用。所有的校准方法都表现出DPOAE水平的变化，由于插入深度，特别是超过4 kHz。然而，SPL表现出最大的变化，在所有的刺激水平的频率高于2 kHz，这表明SIL和FPL提供更一致的测量DPOAE的频率容易受到驻波校准误差。
Standing waves can cause errors during in-the-ear calibration of sound pressure level (SPL), affecting both stimulus magnitude and distortion-product otoacoustic emission (DPOAE) level. Sound intensity level (SIL) and forward pressure level (FPL) are two measurements theoretically unaffected by standing waves. SPL, SIL and FPL in-situ calibrations were compared by determining sensitivity of DPOAE level to probe-insertion depth (deep, “shallow”) for a range of stimulus frequencies (1−8 kHz) and levels (20−60 dB). Probe-insertion depth was manipulated with the intent to shift the frequencies with standing-wave minima at the emission probe, introducing variability during SPL calibration. The absolute difference in DPOAE level between insertions was evaluated after correcting for an incidental change caused by the effect of ear-canal impedance on the emission traveling from the cochlea. A three-way analysis of variance (ANOVA) found significant main effects for stimulus level, stimulus frequency and calibration method, as well as significant interactions involving calibration method. All calibration methods exhibited changes in DPOAE level due to insertion depth, especially above 4 kHz. However, SPL demonstrated the greatest changes across all stimulus levels for frequencies above 2 kHz, suggesting that SIL and FPL provide more consistent measurements of DPOAEs for frequencies susceptible to standing-wave calibration errors.
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影响因子：
2.4
作者：
Dreisbach, LE;Siegel, JH
通讯作者：
Siegel, JH
影响因子：
2.4
作者：
Kalluri, Radha;Shera, Christopher A.
通讯作者：
Shera, Christopher A.
DOI：
10.1044/jshr.3505.1142
发表时间：
1992-10-01
期刊：
JOURNAL OF SPEECH AND HEARING RESEARCH
影响因子：
--
作者：
NELSON, DA;KIMBERLEY, BP
通讯作者：
KIMBERLEY, BP
影响因子：
2.4
作者：
GORGA, MP;NEELY, ST;JESTEADT, W
通讯作者：
JESTEADT, W
影响因子：
3.7
作者：
DIRKS, DD;KINCAID, GE
通讯作者：
KINCAID, GE