在短时间里埃变换域中的个人声音区域,具有放松的反响
Jun Tang1,2, Wenye Zhu1,3, Xiaofei Li1,2
1School of Engineering, Westlake University, Hangzhou 310030, China.
The Journal of the Acoustical Society of America
|February 5, 2025
概括
本研究引入了个人声音区 (PSZ) 的新方法,可以减少计算负载和系统延迟. 该技术可以改善声学对比度,而不会对听觉体验产生负面影响.
科学领域:
- 声学 声学 在声学方面
- 信号处理 信号处理
- 音频工程 音频工程
背景情况:
- 个人音响区 (PSZ) 系统旨在为同一空间中的多个用户提供独特的音频体验.
- 传统的PSZ预过设计方法 (时间域,频域) 面临着高计算复杂性或系统延迟的挑战.
- 现有的子带方法也存在计算或延迟限制.
研究的目的:
- 提出一种新的,计算效率高,低延迟的子带方法,用于设计PSZ系统中的预过器.
- 引入轻松的反响框架,以增强声学对比度,同时保持感知质量.
- 评估拟议方法的性能与既有技术相比.
主要方法:
- 建议在短时间里埃变换域中使用一个称为CTF-PM的子频段压力匹配方法.
- 该方法使用卷积转移函数近似来减少复杂性.
- 通过加权复制错误,将放松的反响框架纳入,以专注于反响衰减率.
主要成果:
- 与时间域和现有的子带方法相比,CTF-PM显著降低了计算复杂性.
- 拟议的方法实现了与基线方法相比可比的声学对比度和正常化的平均平方误差.
- 放松的反响框架提高了宽带声学对比度 (0-2 kHz) 超过3dB,而不会降低感知质量.
结论:
- 对于PSZ预过器设计,CTF-PM提供了一个计算效率高和低延迟的解决方案.
- 集成的放松反响框架有效地提高了PSZ系统中的声学对比度.
- 拟议的方法平衡了改进的音频性能与保留的感知听力体验.
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