請用此 Handle URI 來引用此文件：
http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/31224完整後設資料紀錄
| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 郭斯彥 | |
| dc.contributor.author | Meng-Chun Chen | en |
| dc.contributor.author | 陳孟群 | zh_TW |
| dc.date.accessioned | 2021-06-13T02:36:53Z | - |
| dc.date.available | 2007-02-02 | |
| dc.date.copyright | 2007-02-02 | |
| dc.date.issued | 2007 | |
| dc.date.submitted | 2007-01-17 | |
| dc.identifier.citation | [1] M. Bosi. et al, “ISO/IEC MPEG-2 Advanced Audio Coding,” Journal of the
Audio Engineering Society, Vol.45, NO.10, October 1997, pp. 789-813. [2] T. Y. Chang, “Research and Implementation of MP3 Encoding Algorithm,” Master’s thesis, National Chiao Tung University, Hsinchu, Taiwan, ROC, 2002. [3] C. Y. Lee, “Analysis and Investigation of MP3 Audio Encoder with Implementation,” National Taiwan University, Taipei, Taiwan, ROC, 2003. [4]S. R. Quackenbush and J. D. Johnston, “Noiseless Coding of Quantized SpectralComponents in MPEG-2 Advanced Audio Coding”, IEEE ASSP Workshop onApplications of Signal Processing to Audio and Acoustics, 1997. [5] V. Britanak and K. R. Rao, “A New Fast Algorithm for The Unified Forward and Inverse MDCT/MDST Computation,” Signal Processing, 2002, pp.443-459. [6] C. K. Yang, “Investigation and Simplified Design of MP3 Audio Encoder,” Master’s thesis, National Chiao Tung University, Hsinchu, Taiwan, ROC, 2002. [7] F. M. Chang, “A Study on the Fast Algorithm in MPEG-2/4 Advanced Audio Coding,” Master’s thesis, National Taipei University of Technology, Taipei, Taiwan, ROC, 2004. [8]ISO/IEC JTC 1/SC 29/WG 11, “MPEG audio codecs (history & tools),” ISO/IECJTC 1/SC 29/WG 11 N7154, April 2005. [9]H. Y. Huang, “Design and Implementation of AAC Audio Coder” Master’s thesis, National Taiwan University, Taipei, Taiwan, ROC, 2004. [10]M. Wolters, K. Kjörling, D. Homm, H. Purnhagen, “A closer look into MPEG-4High Efficiency AAC,” 115th AES Convention, New York, USA, October 2003,Preprint 5871. [11]C.M. Liu, L.W. Chen, H.W. Hsu, and W.C. Lee, “Bit Reservoir Design for HE-AAC,” at the 118th AES Convention, Barcelona, Spain, May 28~31, 2005. [12]E. Schuijers, J. Breebaart, H. Purnhagen, J. Engdegård: “Low complexity parametric stereo coding”, Proc. 116th AES convention, Berlin, Germany, 2004,Preprint 6073. [13]C. Faller and F. Baumgarte, “Binaural Cue Coding - Part II: Schemes and applications,” IEEE Trans. on Speech and Audio Proc., vol. 11, no. 6, Nov. 2003. [14]C.M. Liu, W.C. Lee, C.H. Yang, K.Y. Pang, T. Chiou, T.W. Chang, Y.H. Hsiao,H.W Hsu, C.T. Chien, “Design of MPEG-4 AAC Encoder,” 117th AES Convention, San Francisco, USA, October 2004, Preprint 6201. [15]K.C. Lee, C.H. Yang, H.W. Hsu, C.M. Liu, W.C. Lee, and T.W. Chang, “EfficientDesign of Time-Frequency Stereo Parameter Sets for Parametric HE-AAC,” 119thAES Convention, New York, USA, October 2005, Preprint 6600. [16]hydrogenaudio Forums: http://www.hydrogenaudio.org/forums/index.php [17]http://www.irisa.fr/texmex/people/dufouil/ffmpegdoxy/wmadec_8c.html [18]Windows Media Player multimedia file formats: http://support.microsoft.com/kb/316992 [19]Codec Listening Test: http://en.wikipedia.org/wiki/Codec_listening_test [20]Coding Technologies: http://www.codingtechnologies.com/products/AACPlus.htm [21]Vorbis: http://en.wikipedia.org/wiki/Vorbis [22]EAQUAL: http://wiki.hydrogenaudio.org/index.php?title=EAQUAL [23]Advanced Systems Format: http://en.wikipedia.org/wiki/Advanced_Systems_Format [24]ASF (Advanced Systems Format): http://www.digitalpreservation.gov/formats/fdd/fdd000067.shtml [25]Windows Media Audio: http://en.wikipedia.org/wiki/Windows_Media_Audio | |
| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/31224 | - |
| dc.description.abstract | Windows Media Audio是Microsoft專門為聲音所研究發展的轉碼器，而且通常他的封包都用Advanced Systems Format stream來儲存與表現。每一個Advanced Systems Format的檔案都包含一個或是數個數位影音序列串。Windows Media Video和Windows Media Audio總是包含在Advanced Systems Format的檔案裡一起播放。
Windows Media Audio system使用波形編碼和可變動性長度編碼來達到他的壓縮目標。除此之外，他還使用人類心理聲學模型建立模組來表現在低的取樣速率下也能展現高品質的聲音。 在此篇論文裡，我們扼要地討論關於Advanced Systems Format和Windows Media Audio的解壓縮程序與原理，並且和其他聲音轉碼器所產生的聲音來做音質上的比較，我們的實驗分為主觀測試和客觀測試來討論Windows Media Audio轉碼器和其他聲音轉碼器所分析出來的結果。 | zh_TW |
| dc.description.abstract | Windows Media Audio system is a CODEC designed especially for music and sound, in which packets are saved and showed in Advanced Systems Format stream. And each Advanced Systems Format file consists of one or more digital media streams. Windows Media Video and Windows Media Audio always play in and along with Advanced Systems Format file.
Moreover, Windows Media Audio system employs the waveform coding and variable-length coding to achieve its compression. And, applying the mode of human psychoacoustics, it manages to display the high quality of the sample, even at low data rates. In this thesis, an attempt is made to concisely discuss the decoding procedure of Advanced Systems Format and Windows Media Audio, and compare the sound quality with other popular audio CODECs. The experiment aims to employ both Objective and Subjective Quality Measurement, and eventually to arrive at a clarifying analysis on the result of coding quality of Windows Media Audio system. | en |
| dc.description.provenance | Made available in DSpace on 2021-06-13T02:36:53Z (GMT). No. of bitstreams: 1 ntu-96-J93921032-1.pdf: 1357296 bytes, checksum: 814145327eaad03cb21214a855a3d879 (MD5) Previous issue date: 2007 | en |
| dc.description.tableofcontents | 中文摘要 i
Abstract ii 1 Introduction 1 2 Advanced systems format 4 2.1 Systematic Function and Structure 6 2.2 High-level File Structure 7 2.3 ASF Top-level Header Object 8 2.4 ASF Top-level Data Object 16 2.5 ASF Top-level Index Object 20 3 Windows Media Audio 24 3.1 Windows Media Audio 9 26 3.2 Packet Layer Decoding 33 3.3 Frame Layer Decoding 35 3.3.1 Run-Level Decoder 36 3.3.2 Inverse Quantizer 40 3.3.3 Weighting Factors 40 3.3.4 Noise Generator 42 3.3.5 Multi-Channel Transformation 42 3.3.6 Inverse Modulated Lapped Transform 43 3.4 Parameter Restrictions on WMA 46 4 Audio Quality Testing Technology 47 4.1 Audio Quality Testing Experiments 48 4.1.1 Objective Quality Measurement 48 4.1.2 Subjective Quality Measurement 49 4.2 Discussion of Popular Audio Codec 50 4.2.1 HE-AAC 52 4.2.2 HE-AAC v2 53 4.2.3 OGG Vorbis 54 4.2.4 Mp3 55 5 Experiments 57 5.1 Experiment Environment 57 5.2 Objective Quality Measurement in Different Audio Codec 60 5.3 Subjective Quality Measurement 65 5.4 WMA Quality Measurement 66 5.4.1 Objective Quality Measurement of WMA 66 5.4.2 Waveform and Spectrum Comparison of WMA and Original Audio Files Chart 68 6 Conclusion 77 Reference 79 | |
| dc.language.iso | en | |
| dc.subject | 音質比較 | zh_TW |
| dc.subject | 聲音轉碼器 | zh_TW |
| dc.subject | 人類心理聲學模型 | zh_TW |
| dc.subject | sound quality measurement | en |
| dc.subject | human psychoacoustics | en |
| dc.subject | Audio CODEC | en |
| dc.title | 音訊編碼之聲音品質研究與分析 | zh_TW |
| dc.title | Study and Analysis on the Sound Quality of Media Audio Coding | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 95-1 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 顏嗣鈞,雷欽隆,呂學坤,陳英一 | |
| dc.subject.keyword | 聲音轉碼器,人類心理聲學模型,音質比較, | zh_TW |
| dc.subject.keyword | Audio CODEC,human psychoacoustics,sound quality measurement, | en |
| dc.relation.page | 81 | |
| dc.rights.note | 有償授權 | |
| dc.date.accepted | 2007-01-18 | |
| dc.contributor.author-college | 電機資訊學院 | zh_TW |
| dc.contributor.author-dept | 電機工程學研究所 | zh_TW |
| 顯示於系所單位： | 電機工程學系 | |
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| 檔案 | 大小 | 格式 | |
|---|---|---|---|
| ntu-96-1.pdf 未授權公開取用 | 1.33 MB | Adobe PDF |
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