Welcome!
In 2000, the Signal Processing and Speech Communication Laboratory (SPSC Lab) of Graz University of Technology (TU Graz) was founded as a research and education center in nonlinear signal processing and computational intelligence, algorithm engineering, as well as circuits & systems modeling and design. It covers applications in wireless communications, speech/audio communication, and telecommunications.
If you want to learn more about Signal Processing, click: What is Signal Processing?
The Research of SPSC Lab addresses fundamental and applied research problems in five scientific areas:
- Audio and Acoustics
- Intelligent Systems
- Nonlinear Signal Processing
- Speech Communication
- Wireless Communications
Profiles
Result of the Month
Evaluating State-of-the-Art Voice Conversion Models for Dysphonic and Electro-Larynx Speech
Voice disorders, such as dysphonia or speech produced using an electro-larynx, often result in reduced intelligibility and unnatural prosody and speech quality. This paper investigates the potential of modern voice conversion (VC) technologies to restore healthy-sounding speech from pathological inputs. Four state-of-the-art VC models (FreeVC, QuickVC, LLVC, and XVC) were fine-tuned on Austrian-German datasets and evaluated using both objective and subjective measures. Results show substantial improvements in perceived naturalness, intelligibility, and vocal health, with listener preference scores exceeding those of the original pathological speech by up to 200 %.
Read the full article.Contact: Benedikt Mayrhofer, Martin Hagmüller