...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Microprocessors and microsystems >Accurate estimation of decay coefficients for dynamic range compressors in hearing aids and a hardware level comparison of different architectures
【24h】

Accurate estimation of decay coefficients for dynamic range compressors in hearing aids and a hardware level comparison of different architectures

机译：准确估计助听器中动态范围压缩机的衰减系数和不同架构的硬件级别比较

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Dynamic Range Compression (DRC) algorithm helps to protect the residual hearing ability of hearing aid users by compressing the signal levels which go above a particular threshold. This paper addresses two different aspects of DRC for hearing aid applications. In the first part, methods to estimate the decay coefficients corresponding to the required time constants for a feed-forward DRC architecture accurately, to meet the hearing aid specifications are proposed. The effect of compression on the attack and release time parameters are compensated with the new formula. The hardware implementation of four different DRC architectures is explained in the second part of the paper. The estimated decay coefficients for a test signal were used for the corresponding hardware implementations and verified the validity of proposed algorithmic modifications. The architectures were implemented using UMC 65 nm standard cell libraries and the power and error results were compared. The proposed methods to estimate the decay coefficients for both attack and release phases show close to 0 dB error from expected output values, while conventional methods are not meeting the specifications. Hardware implementation shows that there is not much improvement in power performance, between a lower resolution Look-Up Table (LUT) based logarithm implementation and a higher resolution one. From the results, we propose using the absolute level detector based DRC with higher resolution logarithm without a gain smoothing stage at the output for lowest power consumption and better approximation error performance. (C) 2020 Elsevier B.V. All rights reserved.
机译：动态范围压缩（DRC）算法有助于通过压缩超出特定阈值的信号电平来保护助听器用户的剩余听力能力。本文涉及DRC的两个不同方面，用于助听器应用。在第一部分中，提出了准确地估计与前馈DRC架构的所需时间常数对应的衰减系数，以满足助听器规范。压缩对攻击和释放时间参数的影响是用新公式补偿的。纸张的第二部分解释了四种不同的DRC架构的硬件实现。测试信号的估计衰减系数用于相应的硬件实现，并验证了所提出的算法修改的有效性。使用UMC 65 NM标准单元库来实现架构，并比较电源和错误结果。估计攻击和释放阶段的衰减系数的所提出的方法显示了从预期输出值的0 dB误差接近0 dB误差，而传统方法不符合规范。硬件实现表明，基于分辨率查找表（LUT）的对数实现和更高分辨率的电力性能之间的功率性能没有太大提高。从结果中，我们建议使用基于绝对级检测器的DRC，在输出中没有增益平滑级，以获得最低功耗和更好的近似误差性能。 （c）2020 Elsevier B.v.保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号