南京大学学报(自然科学版) ›› 2019, Vol. 55 ›› Issue (5): 796803.doi: 10.13232/j.cnki.jnju.2019.05.012
摘要:
由于受平板电视扬声器物理尺寸的限制,嵌入其中的扬声器低频重放能力有限,难以回放令人满意的音效.虚拟低音算法通过诱使人脑从高次谐波中感知基频,使扬声器低频性能的主观感受得到提升.对虚拟低音音质的主观评价耗时耗力,基于ITU?R BS.1387建议书(Perceptual Evaluation of Audio Quality)的模型输出参量(Model Output Variables)、客观等级差异(Objective Difference Grade,ODG)、失真指数(Distortion Index)以及MPEG?7标准中的底层描述符音频频谱重心(Audio Spectrum Centroid,ASC),利用多元线性回归分析方法,提出一种适用于虚拟低音音质的客观评价方法.与单独使用ODG或ASC的客观评价方法相比,多参数优选混合模型的客观评价方法显著提升了主客观相关系数.论文通过实验验证了模型的有效性.
中图分类号:
1 | 孟子厚 . 音质主观评价的实验心理学方法. 北京:国防工业出版社,2008,227. |
2 | Schroeder M R , Atal B S , Hall J L . Optimizing digital speech coders by exploiting masking properties of the human ear. The Journal of the Acoustical Society of America,1979,66(6):1647-1652. |
3 | Karjalainen M . A new auditory model for the evaluation of sound quality of audio systems∥1985 IEEE International Conference on Acoustics,Speech,and Signal Processing. Tampa,FL,USA:IEEE,1985,10:608-611. |
4 | Brandenburg K . Evaluation of quality for audio encoding at low bit rates∥Audio Engineering Society Convention 82. London,UK:Audio Engineering Society Press,1987. |
5 | Beerends J G , Stemerdink J A . A perceptual audio quality measure based on a psychoacoustic sound representation. Journal of the Audio Engineering Society,1992,40(12):963-974. |
6 | Paillard B , Mabilleau P , Morisette S ,et al . Perceval: Perceptual evaluation of the quality audio signals. Journal of the Audio Engineering Society,1992,40(1-2):21-31. |
7 | Colomes C , Lever M , Rault J B ,et al . A perceptual model applied to audio bit?rate reduction. Journal of the Audio Engineering Society,1995,43(4):233-240. |
8 | Sporer T . Objective audio signal evaluation?applied psychoacoustics for modeling the perceived quality of digital audio∥Audio Engineering Society Convention 103. New York,NY,USA:Audio Engineering Society Press,1997. |
9 | Thiede T , Kabot E . A new perceptual quality measure for bit rate reduced audio∥Audio Engineering Society Convention 100. Copenhagen,Denmark:Audio Engineering Society Press,1996. |
10 | ITU?R Recommendation BS .1387-1. Method for objective measurements of perceived audio quality. 2001. |
11 | Creusere C D , Kallakuri K D , Vanam R . An objective metric of human subjective audio quality optimized for a wide range of audio fidelities. IEEE Transactions on Audio,Speech,and Language Processing ,2008,16(1):129-136. |
12 | Creusere C D , Hardin J C . Assessing the quality of audio containing temporally varying distortions. IEEE Transactions on Audio,Speech,and Language Processing ,2011,19(4):711-720. |
13 | Oo N , Gan W S . Harmonic analysis of nonlinear devices for virtual bass system. In: 2008 IEEE International Conference on Audio,Language and Image Processing. Shanghai,China:IEEE,2008:279-284. |
14 | Mu H , Gan W S , Tan E L . A timbre matching approach to enhance audio quality of psychoacoustic bass enhancement system∥2013 IEEE International Conference on Acoustics,Speech and Signal Processing. Vancouver,Canada:IEEE,2013:36-40. |
15 | Mu H , Gan W S , Tan E L . An objective analysis method for perceptual quality of a virtual bass system. IEEE/ACM Transactions on Audio,Speech and Language Processing,2015,23(5):840-850. |
16 | Lim W T , Oo N , Gan W S . Synthesis of polynomial?based nonlinear device and harmonic shifting technique for virtual bass system∥2009 IEEE International Symposium on Circuits and Systems. Taipei,China:IEEE,2009. |
17 | Arora M , Jang S , Moon H . Low complexity virtual bass enhancement algorithm for portable multimedia device∥Audio Engineering Society Conference: 29th International Conference: Audio for Mobile and Handheld Devices. Seoul,Korea:Audio Engineering Society Press,2006. |
18 | Bai M R , Lin C . Synthesis and implementation of virtual bass system with a phase?vocoder approach. Journal of the Audio Engineering Society,2006,54(11):1077-1091. |
19 | Oo N , Gan W S . Harmonic and intermodulation analysis of nonlinear devices used in virtual bass systems∥Audio Engineering Society Convention 124. Amsterdam,Netherlands:Audio Engineering Society Press,2008. |
20 | Mu H , Gan W S . Perceptual quality improvement and assessment for virtual bass systems. Journal of the Audio Engineering Society,2015,63(11):900-913. |
21 | 秦伶娟,包紫薇 . 影响音质主观感觉的因素. 电声技术,1990(5):1-11. |
Qin L J , Bao Z W . Factors of affecting the subjective perception of sound quality. Audio Engineering,1990(5):1-11. | |
22 | 国家技术监督局 . 声学·语言清晰度测试方法 GB/T 15508?1995. (State Bureau of Technical Supervision . Acoustics?Speech articulation testing method GB/T 15508?1995. |
23 | Kim H G , Moreau N , Sikora T . MPEG?7 audio and beyond:audio content indexing and retrieval. New York:John Wiley & Sons Press,2006. |
24 | Kabal P . An examination and interpretation of ITU?R BS.1387:Perceptual evaluation of audio quality Technical Report Lab TSP ,Electrical & Computer Engineering Department, University McGill ,Montreal,Canada ,2002. |
25 | 盛骤,解式千,潘承毅 . 概率论与数理统计. 第 4版. 高等教育出版社,2008,428. |
26 | Pallant J . SPSS survival manual: a step by step guide to data analysis using SPSS for windows (version 15). Maidenhead: Open University Press,2007,334. |
[1] | 高红霞, 汤剑平** . 我国未来温度变化的统计降尺度预估* [J]. 南京大学学报(自然科学版), 2010, 46(6): 631-642. |
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