首页> 外文OA文献 >Contribution of envelope periodicity to release from speech-on-speech masking
【2h】

Contribution of envelope periodicity to release from speech-on-speech masking

机译:包络周期性对语音语音掩蔽释放的贡献

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务,本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文,但由于OA文献来源多样且变更频繁,仍可能出现获取不到、文献不完整或与标题不符等情况,如果获取不到我们将提供退款服务。请知悉。

摘要

Masking release (MR) is the improvement in speech intelligibility for a fluctuating interferer compared to stationary noise. Reduction in MR due to vocoder processing is usually linked to distortions in the temporal fine structure of the stimuli and a corresponding reduction in the fundamental frequency (F0) cues. However, it is unclear if envelope periodicity related to F0, produced by the interaction between unresolved harmonics, contributes to MR. In the present study, MR was determined from speech reception thresholds measured in the presence of stationary speech-shaped noise and a competing talker. Two types of processing were applied to the stimuli: (1) An amplitude- and frequency-modulated vocoder attenuated the envelope periodicity and (2) high-pass (HP) filtering (cutoff¼500 Hz) reduced the influence of F0-related information from low-order resolved harmonics. When applied individually, MR was unaffected by HP filtering, but slightly reduced when envelope periodicity was attenuated. When both were applied, MR was strongly reduced. Thus, the results indicate that F0-related information is crucial for MR, but that it is less important whether the F0-related information is conveyed by low-order resolved harmonics or by envelope periodicity as a result of unresolved harmonics. Further, envelope periodicity contributes substantially to MR.
机译:与平稳噪声相比,掩蔽释放(MR)是对波动干扰源的语音清晰度的改进。通常,由于声码器处理导致的MR降低与刺激的时间精细结构的失真以及基频(F0)提示的相应降低有关。但是,尚不清楚由未解决的谐波之间的相互作用所产生的与F0相关的包络周期性是否对MR有贡献。在本研究中,MR是根据在存在固定语音形状噪声和竞争性讲话者的情况下测得的语音接收阈值确定的。对刺激进行了两种类型的处理:(1)调幅和调频的声码器减弱了包络周期,并且(2)高通(HP)滤波(截止¼500 Hz)将与F0相关的信息的影响降低了。阶谐波。单独使用时,MR不受HP过滤的影响,但是当包络周期减小时,MR会稍微降低。两者同时使用时,MR大大降低。因此,结果表明,与F0相关的信息对于MR至关重要,但是与F0相关的信息是通过低阶已分解谐波还是由于未解析谐波导致的包络周期来传递,都显得不那么重要。此外,包络周期性对MR有很大贡献。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利

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