Pitch continuity and speech source attribution.

Pitch Continuity and Speech Source Attribution

Two experiments showed that continuity of the pitch contour is an important perceptual indicator that a formant pattern comes from a single speech source. Subjects listened to repeatedly played formant patterns that changed smoothly between two vowels. When the pitch was a monotone, these patterns were heard as containing semivowels and liquid consonants; but when a discontinuous, steplike pitc...

Voice source analysis for pitch-scale modification of speech signals

Much research has shown that the voice source has strong influence on the quality of speech processing [4][5][6]. But in most of the existing speech modification algorithms, the effect of the voice source variation is neglected. This work explains why the existing modification scheme can’t truly reflect the voice source variation during pitch modification. We use synthesized voiced speech sound...

Source-Filter-Based Single-Channel Speech Separation Using Pitch Information

In this paper, we investigate the source–filter-based approach for single-channel speech separation. We incorporate source-driven aspects by multi-pitch estimation in the model-driven method. For multi-pitch estimation, the factorial HMM is utilized. For modeling the vocal tract filters either vector quantization (VQ) or non-negative matrix factorization are considered. For both methods, the fi...

Boosting in Textual Source Attribution

Poster: Source Code Authorship Attribution

As information becomes widely available and easily accessible through the Internet and other sources, the trend of plagiarism has been increasing. Plagiarism and copyright infringement are issues that come up in both academic and corporate environments. We need author classification techniques to inhibit such unethical violations. Source code is also intellectual property and reflects individua...