1. Speech Level Measures
Dr. Herman J.M. Steeneken

2. Speech level measurement
Requirements:
Male female comparable
Wide band and telephone band comparable
Insensitive for pauses and silent periods
Fixed relation with STI test signal levels

3. Relevant level measures
Peak levels (overload indicator)
RMS level (root mean square, related to SNR)
Indicator deflections (not reliable)

4. Mean speech spectra

5. Level measurement

6. Amplitude distribution direct sampling

7. Amplitude distribution envelope sampling

8. Relation between some speech levels
Notice the level differences
between speech utterances
spoken with and without silent
periods in between