15.2.3. Scope

The user can check the FFT and raw time domain data of the ERP and ERP density on each Patch Sets.

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Figure 15.7 Acoustics Scope dialog

  • Patchset: Selects a Patch Set.

  • Mode: Selects Mode for Modal ERP. If the selected Patch Set belongs to the RFlex, the user can select modes to calculate a Modal ERP.

  • View Type: selects following data.

    • ERP - Magnitude: Magnitudes data from FFT/ERP result.

    • ERP - Phase Angle: Phase Angle data from FFT/ERP result.

    • ERP Density - Magnitude: Magnitudes data from FFT/ERP Density result.

    • ERP Density - Magnitude[dB]: Decibel plot for the magnitudes data from FFT/ERP Density result.

      \({{e}_{ERP\_\rho \_FFT\_dB}}=10.0\log 10\left( \cfrac{{{e}_{ERP\_\rho \_FFT}}}{{{e}_{ERP\_\rho 0}}} \right)\quad \because {{e}_{ERP\_\rho 0}}\equiv 1.0e-12\ [\text{W/}{{\text{m}}^{\text{2}}}]\)

      Where,
      \({{e}_{ERP\_\rho 0}}\) is the reference power intensity for the sound. And
      \({{e}_{ERP\_\rho \_FFT}}\) is the magnitude of the (ERP Density – Magnitude) in frequency domain.

    • ERP Density - Phase Angle: Phase Angle data from FFT/ERP Density result.

    • ERP - Time Domain: ERP raw data.

    • ERP Density - Time Domain: ERP Density raw data.