Illusonic IAP2, Руководство пользователя

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32 Illusonic IAP Chapter 5
IAP Calibration Software
Overview
The Overview panel shows all included loudspeaker frequency responses
for one microphone, or average over all included microphones. When Bass
Management/Crossovers are enabled, the channels are integrated accord-
ingly (for example, subwoofers and other channels are combined). Also, the
frequency response of phantom center can be simulated.
Detail
The idea of the Detail panel is to do detail analysis on one loudspeaker.
For the selected loudspeaker, simultaneously the frequency responses of
microphone positions and microphones-average can be shown. This helps to
make trade-off decisions between sweet-spot, listening positions, and room
averages.
Waterfall
The Waterfall panel shows how frequency responses decay in time. Data is
shown for one loudspeaker and microphone position, or microphone aver-
age. Long-sustaining resonances can easily be detected in these plots.
Time Domain
The Time Domain panel shows the measured and modified impulse responses.
Use this panel to time align loudspeakers, delays between channels are pre-
cisely measured by IAP Calibration and visualized here.
Test Signals
A wide variety of test signals are available, including different noises, pulses,
and tones. Additionally, the Test Signals pane allows you to auralize (listen
with headphones) the measured room at any microphone position. Aural-
ization also simulates the complete calibration, including gain/delay/polarity,
equalizers, crossovers, and bass management.
Distortion
IAP Calibration measures with swept sines, increasing frequency logarithmi-
cally. This way of measurement also allows to do a detailed harmonic distor-
tion analysis. The direct sound, relative to which distortion analysis shall be
carried out, can be isolated. Harmonic distortion, as a function of frequency,
can be visualized in different ways.