Plot Setup
The Plot Setup screen can be accessed by tapping 
on the Measure or Equalize screens.
Saved Measurement
Saved Measurements can be displayed on the plot for comparison. Choose “None” to disable. Measurements can be removed or exported by tapping Select (export with Tuning Bundle in-app purchase).
When a measurement is saved, it will be added to this list and selected.
Target Curve
A target curve is displayed on the magnitude plot to serve as a guide for tuning an audio system.
The curve is positioned on magnitude plots based on the Target Curve Fit setting.
Additional target curves can be loaded by tapping + at the top of the target curve screen. Target curves can be removed by tapping Select.
HouseCurve supports the following curve file format.
Target Curve Fit
By default, the selected target curve is automatically fitted to measurements based on the Plot Mode. In Average mode, the average measurement is used. In History mode, the most recent measurement is used. If there are no current measurements the target curve is fitted to the saved measurement.
Coherence Blanking also affects how the target curve is positioned. Portions of the measurement below the blanking threshold are ignored for fitting.
When automatic fitting is disabled, the curve can be manually positioned by setting a desired dB level. This is useful when you don’t want the curve to move, for example, when applying room correction to left and right speakers separately.
Plot Mode
HouseCurve can display measurements to suit a given task (with Tuning Bundle in-app purchase).
Average
Average mode is used to capture how an audio system sounds in a listening area. Use this mode when tuning the audio system to match a target curve. Measurements are included in an average as they are collected. The average measurement is displayed in bold green. Individual measurements will appear in faded green.
HouseCurve applies averaging suitable for equalization and time alignment. Decibel averaging is used for magnitudes. Vector averaging is used for phase. Arithmetic averaging is used for group delay.
History
History mode is used to see the effect of an adjustment from a single microphone location. Use this mode for initial audio system setup, such as speaker position or time alignment. The most recent measurement is displayed in bold green. Older measurements appear in green and are faded according to age.
Smoothing
Smoothing can be applied to measurements to make it easier to see trends. To remove smoothing, select None.
Coherence Blanking
Coherence blanking hides portions of the measurement that are low quality and should not be used for tuning.
Blanking occurs wherever the measurement falls below the selected signal to noise ratio (blanking threshold). To disable blanking, select Off.
This setting also controls the threshold at which HouseCurve will automatically discard measurements.
Frequency Scale
The frequency axis can have an Octave or Decade scale. This setting applies to all plots.