Boys Town National Research Hospital, 555 North 30th Street, Omaha, Nebraska 68131, USA.
J Acoust Soc Am. 2011 Oct;130(4):EL238-43. doi: 10.1121/1.3632047.
Recently, investigators of otoacoustic emissions (OAEs) have shown interest in measuring OAEs to frequencies higher than 10 kHz. Most commercial instruments used to measure OAEs do not specify the microphone frequency response at higher frequencies, nor does their typically integrated design make it convenient to measure it. OAE probes manufactured by Etymotic Research have reasonably constant microphone sensitivity up to about 10 kHz and allow direct access to both the sound sources and microphone preamplifier output. A detailed procedure for calibrating the Etymotic Research OAE probe microphone to extend its usable frequency range to frequencies up to 20 kHz is described.
最近，耳声发射（OAE）的研究人员对测量高于 10 kHz 的 OAE 频率表现出了兴趣。大多数用于测量 OAE 的商用仪器都没有指定在更高频率下的麦克风频率响应，其典型的集成设计也不便于进行测量。Etymotic Research 制造的 OAE 探头在大约 10 kHz 之前具有相当稳定的麦克风灵敏度，并允许直接访问声源和麦克风前置放大器输出。本文详细介绍了一种校准 Etymotic Research OAE 探头麦克风的方法，以将其可用频率范围扩展到高达 20 kHz 的频率。
