Engineering: Baseline experiment
Engineering: Baseline experiment
Reproduce Mermelstein's original detector
- Broadband energy measure (500 to 4000 Hz)
- Convex hull peak picking
- Hard limits
- Peak-to-dip > 2 dB
- Duration > 80 ms
- Peak level > 25 dB below overall peak
- Post process to remove fricatives
Mermelstein's original test results
- Two male talkers
- Eleven sentences
- 9.5% error (6.9% delete, 2.6% insert)
Test on TIMIT with RVLMs
- 26.2% TER, much worse than Mermelstein reported
- Optimize energy band for F1, 13.4% TER
- eliminate post processing with no penalty