Voice Technologies

  1. Text-to-Speech Synthesis
    1. TTS System Architecture
      1. Frontend Processing
        1. Text Analysis
          1. Linguistic Processing
            1. Phonetic Conversion
            2. Backend Processing
              1. Prosody Generation
                1. Waveform Synthesis
                  1. Post-Processing
                2. Text Analysis and Preprocessing
                  1. Text Normalization
                    1. Number Expansion
                      1. Abbreviation Handling
                        1. Symbol Processing
                          1. Currency and Date Formats
                          2. Linguistic Analysis
                            1. Part-of-Speech Tagging
                              1. Syntactic Parsing
                                1. Semantic Analysis
                                  1. Discourse Analysis
                                  2. Phonetic Transcription
                                    1. Grapheme-to-Phoneme Conversion
                                      1. Dictionary Lookup
                                        1. Rule-Based Methods
                                          1. Statistical Methods
                                          2. Homograph Resolution
                                            1. Context Analysis
                                              1. Disambiguation Rules
                                                1. Machine Learning Approaches
                                              2. Prosody Modeling
                                                1. Prosodic Features
                                                  1. Fundamental Frequency
                                                    1. Duration Modeling
                                                      1. Intensity Patterns
                                                        1. Pause Insertion
                                                        2. Prosody Prediction
                                                          1. Rule-Based Approaches
                                                            1. Statistical Models
                                                              1. Neural Prosody Models
                                                              2. Emotional Prosody
                                                                1. Emotion Categories
                                                                  1. Prosodic Correlates
                                                                    1. Style Transfer
                                                                  2. Synthesis Techniques
                                                                    1. Concatenative Synthesis
                                                                      1. Unit Selection
                                                                        1. Database Design
                                                                          1. Unit Types
                                                                            1. Selection Criteria
                                                                              1. Concatenation Methods
                                                                              2. Diphone Synthesis
                                                                                1. Diphone Inventory
                                                                                  1. Smoothing Techniques
                                                                                    1. Prosody Modification
                                                                                  2. Parametric Synthesis
                                                                                    1. Source-Filter Models
                                                                                      1. Vocal Tract Modeling
                                                                                        1. Excitation Generation
                                                                                          1. Filter Design
                                                                                          2. HMM-Based Synthesis
                                                                                            1. Statistical Parameter Generation
                                                                                              1. Global Variance
                                                                                                1. Speaker Adaptation
                                                                                                2. Vocoder Technologies
                                                                                                  1. WORLD Vocoder
                                                                                                    1. STRAIGHT Vocoder
                                                                                                      1. Neural Vocoders
                                                                                                    2. Neural Synthesis
                                                                                                      1. Sequence-to-Sequence Models
                                                                                                        1. Tacotron Architecture
                                                                                                          1. Attention Mechanisms
                                                                                                            1. Decoder Design
                                                                                                            2. Autoregressive Models
                                                                                                              1. WaveNet Architecture
                                                                                                                1. Dilated Convolutions
                                                                                                                  1. Conditioning Mechanisms
                                                                                                                  2. Non-Autoregressive Models
                                                                                                                    1. FastSpeech Architecture
                                                                                                                      1. Duration Prediction
                                                                                                                        1. Parallel Generation
                                                                                                                        2. Flow-Based Models
                                                                                                                          1. WaveGlow Architecture
                                                                                                                            1. Normalizing Flows
                                                                                                                              1. Invertible Transformations
                                                                                                                          2. Voice Quality and Adaptation
                                                                                                                            1. Speaker Modeling
                                                                                                                              1. Speaker Embeddings
                                                                                                                                1. Voice Conversion
                                                                                                                                  1. Speaker Adaptation
                                                                                                                                  2. Multi-Speaker Systems
                                                                                                                                    1. Speaker Selection
                                                                                                                                      1. Voice Cloning
                                                                                                                                        1. Few-Shot Learning
                                                                                                                                        2. Style Control
                                                                                                                                          1. Speaking Style Transfer
                                                                                                                                            1. Emotion Control
                                                                                                                                              1. Prosodic Modification
                                                                                                                                            2. TTS Evaluation
                                                                                                                                              1. Subjective Evaluation
                                                                                                                                                1. Mean Opinion Score
                                                                                                                                                  1. Preference Tests
                                                                                                                                                    1. Listening Test Design
                                                                                                                                                    2. Objective Evaluation
                                                                                                                                                      1. Intelligibility Measures
                                                                                                                                                        1. Naturalness Metrics
                                                                                                                                                          1. Prosody Evaluation
                                                                                                                                                          2. Automatic Evaluation
                                                                                                                                                            1. Mel Cepstral Distortion
                                                                                                                                                              1. Fundamental Frequency Error
                                                                                                                                                                1. Duration Accuracy