Magotra N, Livingston F, Rajagopalan S, Stewart J, Bricker K
Department of Electrical and Computer Engineering, University of New Mexico, Albuquerque, USA.
Ann Otol Rhinol Laryngol Suppl. 1995 Sep;166:154-6.
This paper presents the development of a digital binaural hearing aid using Texas Instruments' floating point TMS320C3X digital signal-processing chip. The device is referred to as the Customized Universal Digital Listening System (CUDLS). CUDLS uses a wide bandwidth (up to 16 kHz) and incorporates speech enhancement (noise reduction) as an integral part of the device. It is capable of sampling up to two input speech channels at a variable sampling rate. We are currently using a sampling rate of 20 kHz for each channel. We have developed our own customized hardware and software to implement CUDLS in real time with zero processing delay. The system has been designed to make it easy for the therapist to modify its features.
本文介绍了一款使用德州仪器浮点型TMS320C3X数字信号处理芯片开发的数字双耳助听器。该设备被称为定制通用数字听力系统（CUDLS）。CUDLS采用宽带宽（高达16kHz），并将语音增强（降噪）作为设备的一个组成部分。它能够以可变采样率对多达两个输入语音通道进行采样。我们目前每个通道使用的采样率为20kHz。我们已经开发了自己定制的硬件和软件，以实时实现CUDLS且处理延迟为零。该系统的设计便于治疗师修改其功能。
