User Interface

  1. Open file into Active Curve
  2. Save Active Curve to file
  3. Choose or disable Active Workspace (determines default directory for program operations; necessary for proper operation of Room Macros)
  4. Clear all loaded Curves
  5. Clear the Active Curve
  6. Go Back one step
  7. Make Active Curve thicker
  8. If WriteConf is checked demand confirmation when saving a curve which will overwrite an existing file
  9. Displays the current Active Workspace directory path
  10. Enables selection of the Active Curve for any process steps until another Active Curve is selected. Needed before file open, save, or edit. If a curve number is underlined here, it contains unsaved data
  11. Sample rate assumed by Acourate for all currently open curves. Must be set BEFORE opening a file. Should not be changed without clearing all curves before further processing
  12. Charts to View: Amplitude (vs frequency); Phase (vs frequency, including unwrapped phase and group delay); value (usually pressure) (vs Time); Amplitude vs frequency and value vs Time; All three available charts

Data for the current cursor position:

  1. Sound level and frequency
  2. Time for one full cycle at this frequency
  3. Wavelength based on speed of sound in dry air at 21.35 degrees Celcius
  4. 1/4 Wavelength - see Allison Effect in Glossary




  1. Filename and illustrated color of the loaded curves (remove checkmark and curve is no longer displayed)
  2. Number of frequency points of the curve
  3. Maximum level of the entire curve in dB which occurs at stated frequency
  4. Minimum level of the entire curve in dB which occurs at stated frequency
  5. Maximum level within the marked area
  6. Minimum level within the marked area
  7. Difference between the two levels
  8. Level at frequency on the left mark
  9. Levelat frequency on the right mark
  10. Difference between the two levels


Returns the data from the current cursor position in the time domain.

  1. X-axis - Time in seconds at cursor position
  2. Y-axis - value of time signal at cursor position
  3. Sample - Time in whole samples at cursor position


  1. Number of total samples of a time signal
  2. Maximum value for samples
  3. Minimum value in samples
  4. Maximum value within the marked area
  5. Minimum value within the marked area
  6. Total time of the sound signal in the selected interval
  7. Distance traveled by sound during the selected interval
  8. Number of samples in the selected interval
  9. Frequency whose whole cycle time equals the selected interval (1 / cycle time)