By enabling the equalizer pop up menu, the three main equalizers are available, as well as the RTA tool, which allows the user to quickly tune the audio system. The acquisition takes place via an audio interface connected to the PC, and a microphone to it. In Channel EQ mode it is possible to perform a self-calibration of the front with respect to the target curves.
A) Settings. It allows the user to select the audio device available, connected to the PC.
Driver: it allows the user to select the audio capture devices connected to the PC.
Remark: it is possible to interface the Audison bit Tune device to the PC, which can manage both the HSM microphone and the TMD microphone. The TMD microphone compared to the HSM microphone allows greater accuracy in the measurement, while the HSM microphone allows an environmentally more accurate measurement.
Microphone Calibration File: it allows the user to load, if available, the calibration file of the microphone connected to the audio device selected in the previous point.
The correct connection of the audio device to the PC is confirmed by the green logo.
If the logo is red, check the audio interface settings or its correct connection to the PC.
B) Speed: it sets the updating speed of the spectral measurement displayed for a good compromise between accuracy and ease of reading.
C) Weighting: it selects the type of weighting filter for the measurement.
None: excludes any weighting filter in signal acquisition. It expresses the absolute value but does not take into account the acoustic perception of the human ear.
A-weigh: Suggested. It enables an A-type weighting filter. It inserts a filter that simulates the perception of the human ear with a low background noise. It is the curve used for the signal to noise ratio measurements (S/N Ratio).
C-weigh: it enables a C-type weighting filter. It is used with high-level background noise.
D) Target: it allows the user to load an arrival curve of the final result after having acquired the environmental response of the passenger compartment. The default curve provides the ability to achieve an optimal listening ambience, which can then be manually adjusted by interacting on the front equalization with the parametric equalizer.
E) EQ import: it allows the user to import an equalization curve into the Front equalizer generated by third-party programs (Rew……).
F) To edit a new target curve and then save it.
G) To edit an existing target curve and then save it.
H) To delete a existing target curve.
I) To load a existing target curve.
J) After an RTA acquisition, it allows the automatic equalization of the emission front of the selected system.
K) Measurements: the display to the right shows the commands for the acquisition level of the RTA level indicated by a colored bar and a numerical percentage value. To acquire the signal, select the front speakers (Front Left is selected by default), play pink noise and then press the Play button. Reach a signal level between 60 and 80% using the volume control of the Virtuoso and then press pause. At this point you can select the "Set EQ" button and proceed with the automatic equalizer setup. The result of the automatic equalization depends on the Target curve and its positioning with respect to the acquired curve (see next point).