Parameters Overview
The calculation parameters of most of the indicators available in Ansys Sound: Analysis and Specification can be configured from the Custom Profile settings. This section gives the details about these parameters.
Level vs. Time
Parameter |
Description |
---|---|
Sound level meter setting |
This parameter sets the calculation of the temporal levels. Three calculation modes are available, according to the IEC 61272-1 standard:
If you want set the temporal levels manually, select Customized, then set the Time step, Window size and the type of Analysis window. |
Time step (ms) |
This parameter is associated to the above mentioned Customized parameter. It corresponds to the step between two level calculations. |
Window size (ms) |
This parameter is associated to the above-mentioned Customized parameter. It corresponds to the size of the analysis window. Note:
The longer the window is, the smoother the curve is.
|
Analysis window |
This parameter is associated to the above-mentioned Customized parameter. It corresponds to the type of analysis window:
|
ISO1996-2 Tonality
Parameter |
Description |
---|---|
Non-stationary mode |
This mode performs the calculation at different time steps of the signal defined by the following parameters:
|
Noise pause Detection threshold |
This parameters is a positive value in dB. |
Effective analysis bandwidth |
This parameter refers to the effective frequency resolution of the calculated spectra. Important:
Value has to be lower than 5 Hz.
|
Noise bandwidth |
This parameter refers to the bandwidth taken into account for estimating the noise level. Important: The value has to range between 0.75 and 2 (+/- CB - Critical Bandwidth).
|
DIN45681 Tonality
Parameter |
Description |
---|---|
Integration window length |
This parameter sets the integration window length in millisecond. |
Overlap |
This parameter allows you to set the overlap percentage applied to the window length. |
Aures Tonality
Parameter |
Description |
---|---|
Overlap |
This parameter allows you to set the overlap percentage applied to the window length. |
Bandwidth weighting w1 |
When enabled, this option includes this weighting in the calculation. For further details, see Aures Tonality |
Polynomial Comfort Equation Settings
Adjust the coefficient and exponent values for:
Intelligibility
Parameter |
Description |
---|---|
Integration window length (ms) |
This parameter sets the integration window length in millisecond. |