Abstract
Modulations across time and frequency are known from previous studies to play a significant role
for speech intelligibility. Hence, well-chosen manipulations of modulations via an accurate tool to
systematically modify the modulation content of a signal might be useful for the improvement of
speech intelligibility. This study investigates modulation filtering in a time-frequency representation
of the signal (e.g., a spectrogram), using a novel approach for reconstructing a signal from its modified
representation. It is suggested that this synthesis is regarded as an optimization problem, where
the variables are the time samples of the output signal and where the cost function to minimize
is the difference between the target spectrogram and the current spectrogram. This approach is
made feasible, with regard to the large number of variables involved, by use of a limited-memory
optimization algorithm. This study presents basic results regarding temporal modulation filtering
and discusses the novel method and its possibilities of improvement.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of Forum Acusticum 2011 |
| Publisher | European Acoustics Association |
| Publication date | 2011 |
| ISBN (Print) | 978-84-694-1520-7 |
| Publication status | Published - 2011 |
| Event | Forum Acusticum 2011 - Aalborg, Denmark Duration: 26 Jun 2011 → 1 Jul 2011 http://www.fa2011.org/ |
Conference
| Conference | Forum Acusticum 2011 |
|---|---|
| Country/Territory | Denmark |
| City | Aalborg |
| Period | 26/06/2011 → 01/07/2011 |
| Internet address |