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E-raamat: Neural Correlates of Quality Perception for Complex Speech Signals

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Neural Correlates of Quality Perception for Complex Speech SignalsSuurem pilt
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This book interconnects two essential disciplines to study the perception of speech: Neuroscience and Quality of Experience, which to date have rarely been used together for the purposes of research on speech quality perception. In five key experiments, the book demonstrates the application of standard clinical methods in neurophysiology on the one hand and of methods used in fields of research concerned with speech quality perception on the other.Using this combination, the book shows that speech stimuli with different lengths and different quality impairments are accompanied by physiological reactions related to quality variations, e.g., a positive peak in an event-related potential. Furthermore, it demonstrates that - in most cases - quality impairment intensity has an impact on the intensity of physiological reactions.

Introduction.- ERPs and Quality Ratings Evoked by Phoneme Stimuli Under Varying SNR Conditions.- ERPs and Quality Ratings Evoked by Word Stimuli and Varying Bit Rate Conditions.- ERPs and Quality Ratings Evoked by Sentence Stimuli at Different Reverberation Levels.- EEG Frequency Band Power Changes Evoked by Listening to Audiobooks at Different Quality Levels.- EEG Frequency Band Power Changes Evoked by Listening to Audiobooks with Varying Quality Profiles.- General Discussion.
1 Introduction
1(26)
1.1 Quality and Quality of Experience
4(3)
1.2 Quality Assessment Methods for Speech Stimuli
7(3)
1.3 Electrophysiology and Electroencephalogram
10(14)
1.3.1 EEG Frequency Band Power
11(2)
1.3.2 Working Memory, Vigilance, and Cognitive State
13(1)
1.3.3 EEG Experiment
14(2)
1.3.4 Event-Related Potentials
16(8)
1.4 Outline and Objective of this Work
24(3)
2 ERPs and Quality Ratings Evoked by Phoneme Stimuli Under Varying SNR Conditions
27(18)
2.1 Introduction
28(1)
2.2 Methods
29(3)
2.2.1 Participants
29(1)
2.2.2 Material
29(1)
2.2.3 Experimental Design and Procedure
30(1)
2.2.4 Electrophysiological Recordings
31(1)
2.3 Data Analysis
32(1)
2.3.1 Behavioral Data
32(1)
2.3.2 ERP Data
32(1)
2.3.3 Classification
32(1)
2.4 Statistical Analysis
33(2)
2.4.1 Behavioral Data
33(1)
2.4.2 ERP Data
33(1)
2.4.3 Classification
34(1)
2.5 Results
35(3)
2.5.1 Behavioral Data
35(1)
2.5.2 ERP Data
36(1)
2.5.3 Classification
37(1)
2.6 Discussion
38(1)
2.7 Length Influence Experiment
39(4)
2.7.1 Introduction
40(1)
2.7.2 Methods
40(1)
2.7.3 Statistical Analysis
41(1)
2.7.4 Results
41(2)
2.7.5 Discussion
43(1)
2.8
Chapter Summary
43(2)
3 ERPs and Quality Ratings Evoked by Word Stimuli and Varying Bit Rate Conditions
45(8)
3.1 Introduction
45(1)
3.2 Methods
46(2)
3.2.1 Participants
46(1)
3.2.2 Material
46(1)
3.2.3 Experimental Design and Procedure
47(1)
3.2.4 Electrophysiological Recordings
47(1)
3.2.5 Data Analysis
48(1)
3.3 Statistical Analysis
48(1)
3.4 Results
48(3)
3.4.1 Behavioral Data
48(1)
3.4.2 P300
49(1)
3.4.3 Classification
49(2)
3.5 Discussion
51(1)
3.6
Chapter Summary
52(1)
4 ERPs and Quality Ratings Evoked by Sentence Stimuli at Different Reverberation Levels
53(10)
4.1 Introduction
53(1)
4.2 Methods
53(3)
4.2.1 Participants
53(1)
4.2.2 Material
54(1)
4.2.3 Experimental Design
54(1)
4.2.4 Electrophysiological Recordings
55(1)
4.3 Results
56(5)
4.3.1 Behavioral and Subjective Data
56(3)
4.3.2 P300
59(2)
4.4 Discussion
61(1)
4.5
Chapter Summary
62(1)
5 EEG Frequency Band Power Changes Evoked by Listening to Audiobooks at Different Quality Levels
63(10)
5.1 Introduction
63(1)
5.2 Methods
64(4)
5.2.1 Participants
64(1)
5.2.2 Materials
65(1)
5.2.3 Experimental Design
66(1)
5.2.4 Electrophysiological Recordings
66(1)
5.2.5 Statistical Analysis
67(1)
5.3 Results
68(3)
5.3.1 Quality Ratings
68(1)
5.3.2 Frequency Band Power Analysis
68(3)
5.4 Discussion
71(1)
5.5
Chapter Summary
72(1)
6 EEG Frequency Band Power Changes Evoked by Listening to Audiobooks with Varying Quality Profiles
73(8)
6.1 Introduction
73(1)
6.2 Methods
74(4)
6.2.1 Participants
74(1)
6.2.2 Stimuli
74(1)
6.2.3 Experimental Design
75(1)
6.2.4 Electrophysiological Recordings
76(1)
6.2.5 Statistical Analysis
76(2)
6.3 Results
78(1)
6.3.1 Instrumental Quality Estimation
78(1)
6.3.2 Frequency Band Power Analysis
78(1)
6.4 Discussion
79(1)
6.5
Chapter Summary
80(1)
7 General Discussion and Future Work
81(10)
7.1 General Discussion
81(5)
7.1.1 Phoneme Experiment
82(1)
7.1.2 Word Experiment
83(1)
7.1.3 Sentence Experiment
83(1)
7.1.4 Audiobooks Experiment: Constant Quality
84(1)
7.1.5 Audiobooks Experiment: Quality Profiles
84(1)
7.1.6 Considerations on the Quality Formation Process
84(2)
7.2 Practical Guidelines
86(1)
7.3 Future Work
87(4)
References 91
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