Department of Otorhinolaryngology, University Medical Centre, St. Radboud, Nijmegen, The Netherlands.
Int J Audiol. 2009;48(6):346-52. doi: 10.1080/14992020802662956.
Audiometric characteristics of a recently introduced more powerful, behind-the-ear, BAHA sound processor, the BAHA Intenso, were evaluated in 23 patients with contra-indications for using conventional hearing aids. All patients had mixed hearing loss with boneconduction thresholds ranging between 30 and 50 dB HL. Boneconduction gain, defined as the difference in aided free-field detection thresholds and unaided boneconduction thresholds, was calculated at the octave frequencies between 500 Hz and 4 kHz. Median boneconduction gain of the Intenso ranges from 0 dB at 500 ;Hz to 12 ;dB at 2 kHz with substantial interindividual variability. The upper limit of the BAHA Intenso's fitting range was established by requiring aided speech reception thresholds with CVC-monosyllables of at most 60 dB SPL. The fitting range of the BAHA Intenso appeared to be limited to 42, 44, 58, and 48 dB HL for boneconduction thresholds at 0.5, 1, 2, and 4 ;kHz, respectively. Loudness growth functions at 0.5 and 3 kHz as obtained with 7-point categorical scaling showed an adequate aided dynamic range.
对一种新推出的功率更大的、耳后式的 BAHA 声音处理器——BAHA Intenso 的听力特征进行了评估，该处理器适用于不适合使用传统助听器的 23 名患者。所有患者均有混合性听力损失，骨导阈值在 30 至 50dBHL 之间。骨导增益定义为助听自由场检测阈值与未助听骨导阈值之间的差值，在 500Hz 至 4kHz 的倍频程频率下进行计算。Intenso 的骨导增益中位数范围从 500Hz 的 0dB 到 2kHz 的 12dB，个体间差异较大。Intenso 的最大助听听阈设定为 CVC 单音节词不超过 60dB SPL，以此确定了其适配范围的上限。Intenso 的适配范围似乎分别限制在骨导阈值为 0.5、1、2 和 4kHz 时的 42、44、58 和 48dBHL。使用 7 级类别标度获得的 0.5 和 3kHz 的响度增长函数显示出足够的助听动态范围。
