Using Peaq - OPTICOM OPERA - V 3.5 User Manual

C H A P T E R 5 :
In comparison to the FFT based "Basic" approach, the temporal resolution is
improved, thus allowing for a better simulation of temporal effects, at the cost of
frequency resolution and computational complexity.
The MOVs used by the "Advanced" version are listed in Table 5.2. It should
be noted that due to the combination of parameters derived from both of the ear
models, the number of MOVs required to derive the final quality measure could
be reduced to five, while simultaneously the accuracy of the algorithm was
slightly improved compared to the "Basic" version. For more detailed
information about the Advanced Version, see the paper of the ITU-R
recommendation BS.1387 located in the appendix.
Figure 5.4: Perceptual model, PEAQ "Advanced" version
Model Output Variable (MOV)
RmsNoiseLoudAsym
RmsModDiff
A
AvgLinDist
A
Segmental NMR
EHS
B
Table 5.2: MOVs used by the PEAQ "Advanced" version, and their interpretation

5.5 Using PEAQ

This chapter will introduce the PEAQ measurement algorithm in general as well
as the usage and application of PEAQ as implemented in OPERA™.
W I D E B A N D A U D I O
Loudness of the distortion
A
Changes in modulation
Linear distortions
Noise-to-mask ratio
B
Harmonic structure of the error
90
Q U A L I T Y T E S T I N G
Interpretation
(related to roughness)
(frequency response etc.)