User's Manual Part 2

Nomad User’s Manual Appendix D – PESQ Tools GUI Case Study

The issue of speech clipping is visible when comparing the Reference Surface to the Degraded

Surface:

Figure D-3 - Reference Surface

Figure D-4 - Degraded Surface

Speech clipping is also apparent on the Error Surface graph. The Error Surface represents the

Reference Surface minus the Degraded Surface. Therefore, errors that represent missing signal

(i.e. clipping) will have positive values on this chart. Errors that add to the signal (i.e. noise) will

have negative values here.

Figure D-5 - Error Surface