Skip to content

Object Attributes Syntax Suffixes

Variant

@V#

When attributes have different values in different variants, the values can be adressed explicitely in the format ATTRIBUTE@V# (i.e. by adding @V# as a suffix), where # is the variant number from 1 to 16 (or 0 for adressing the „Master“ when „Object attributes per variant“ is used).

Examples:

  • LP2@V3: second evaluation parameter in variant 3
  • DTV@V16: DTV in variant 16

Note

Using the attribute without the suffix @V#, the value of the currently selected project variant is adressed. E.g. LP1 is the value of the evaluation parameter 1 in the currently selected project variant.

Spectra & Sum of Spectral values

@SOF#    @STF#    @SOI#    @STI#    @SS    @S0S    @STS

For spectra, the octave values can be adressed:

  • @SOF#, with # as frequency (e.g. LP1@SOF500 for the 500 Hz octave value of LP1)
  • @SOI#, with # as index number starting with 0 at 31.5 Hz (e.g. LP1@SOI3 for the 250 Hz octave value of LP1)

For spectra, the third-octave values can be adressed:

  • @STF#, with # as frequency (e.g. LP1@STF400 for the 400 Hz third-octave value of LP1)
  • @STI#, with # as index number starting with 0 at 25 Hz (e.g. LP1@STI4 for the 63 Hz third-octave value of LP1)

The spectral values can be summed up with:

  • @SS or @SOS for summing up the octave values (e.g. LP1@SS)
  • @STS for summing up the third-octave values (e.g. LP1@STS)

Note

The weighting (linear, A, ...) of the above values depends on the settings in Options|Miscellaneous. A specific weighting can be set by adding another suffix as shown below (e.g. LP1@SOF500@WA).

Note

When non-spektral sources contribute to LP1, LP1 is not equal to LP1@SS.

Weighting of spectral values

@WL    @WA    @WB    @WC    @WD

The weighting (lin, A, ...) of spectral values depends on the settings in Options|Miscellaneous. However, a suffix can be added to foce an explicit weighting:

  • @WL for linear weighting, e.g. LP1@SOF500@WL
  • @WA for A-weighting, e.g. LP1@SOF500@WA
  • @WB for B-weighting, e.g. LP1@SOF500@WB
  • @WC for C-weighting, e.g. LP1@SOF500@WC
  • @WD for D-weighting, e.g. LP1@SOF500@WD

The suffixes for the weighting can only be applied to spectral values and can not be used for non-spectral values (e.g. LP1@WL does not work)

Note

Internally, CadnaA always uses linear octave or third octave values. Even when only one-third ocvave band contributions at the receiver are present, LP1@STS@WA and LP1@SS@WA will deliver different results since the weighting is applied after summing the third octaves to octaves.

Units

@UI    @UD

Internally, CadnaA always uses metric units. However, e.g. imperial units can be used as display units. With suffixes, the value in internal or display units can be adressed explicitely

  • @UI for internal metric units, e.g. VPKW@UI as speed in km/h
  • @UD for display units, e.g. VPKW@UD as speed in mph if imperial units are used