全数字耳廓助听器

Proceedings of IEEE Workshop on Applications of Signal Processing to Audio and Acoustics Pub Date : 1993-10-17 DOI:10.1109/ASPAA.1993.379990

J. Svean, A. Krokstad, S. Sorsdal

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引用次数: 4

摘要

介绍了一种全数字式耳廓助听器。这款助听器概念的主要特点是大通风口、声反馈消除、编程的极大灵活性、多功能均衡器和先进的压缩机。A/D和D/A转换器具有对数/入特性，信号处理采用浮点运算，保证了大的动态范围和几乎与信号电平无关的信量化噪声比。该助听器包含高速双向数字接口，能够实时传输测量信号。这一特点为装配过程提供了很大的优势。助听器的主体部分是一个采用0.8 /spl μ m CMOS技术的VLSI芯片，尺寸为44 mm/sup / 2/。

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An all digital concha hearing aid

The paper describes an all digital concha hearing aid. The main features of this hearing aid concept are a large vent, acoustic feed-back cancellation, great flexibility by programming, a versatile equalizer, and an advanced compressor. The A/D and D/A converters have log/in characteristics and the signal processing is performed by floating point arithmetic, ensuring a large dynamic range and a signal to quantization noise ratio which is almost independent of signal level. The hearing aid contains a high speed two-way digital interface which is able to transmit measurement signals in real time. This feature provides great advantages to the fitting procedure. The main part of the hearing aid is a VLSI chip in 0.8 /spl mu/m CMOS technology, measuring 44 mm/sup 2/.<>

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Proceedings of IEEE Workshop on Applications of Signal Processing to Audio and Acoustics

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