EVOKED OTOACOUSTIC DISTORTION SCREENING DEVICE

该研究的目的是发展该技术 需要生产一种便携式设备，用于快速筛选听觉 功能，基于诱发耳声发射的测量。 的 所施加的刺激将是在频率上紧密间隔的双音对。 筛选将基于诱发失真产物的评估 2fl-f2。 系统设计将基于极高的 高速数字信号处理，用于从 背景噪声和频谱分析，使用新的，低功耗 装置. 该仪器将在两种模式下运行，一种是 最小的、定性的但高度可靠的筛查指征是 提供了一个可选的模式，允许在广泛的定量测试， 频率范围 可以选择存储、储存和转移 的数据.

The aim of the proposed research is development of the technology required to produce a portable device for rapid screening of auditory function, based on measurement of evoked otoacoustic emission. The applied stimuli will be two-tone pairs closely spaced in frequency. Screening will be based on assessment of the evoked distortion product 2fl-f2. System design will be based on application of ectremely high speed digital signal processing for extraction of low-level signals from background noise and for spectral analysis, using new, lower-power devices. The instrument will operate in two modes, one in which a minimal, qualitative but highly reliable screening indication is provided, and an optional mode permitting quantitative tests over a wide frequency range. There is to be optional printout, storage and transfer of data.