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CASCADED ALL-PASS FILTERS WITH RANDOMIZED CENTER FREQUENCIES AND PHASE POLARITY FOR ACOUSTIC AND SPEECH MEASUREMENT AND DATA AUGMENTATION
![](https://sigport.org/sites/default/files/styles/home/public/ICASSP_2021_0.jpg?itok=5O5H7jAd)
- Citation Author(s):
- Submitted by:
- Hideki Kawahara
- Last updated:
- 23 June 2021 - 11:35am
- Document Type:
- Presentation Slides
- Document Year:
- 2021
- Event:
- Presenters:
- HIdeki Kawahara
- Paper Code:
- 5206
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A new Time-Stretched-Pulse provides a solid foundation of acoustic measurements
Motivation: Measure and record speech data acquisition and presentation conditions
Issues: The target (real-world) systems consist of not only linear time-invariant but also non-linear time-invariant, random, and time-varying responses
Solution: We invented a simultaneous measurement of multiple paths by combining extended TSP signals with binary orthogonal weight sequences
Solid foundation: Cascading all-pass filters with randomized center frequencies and phase polarity yields an extended TSP, called CAPRICEP
Example application: We open-sourced an interactive and real-time tool