Software used in-house by our technicians

DIRAC

DIRAC PC software is used for measuring a wide range of room acoustical parameters. Based on the measurement and analysis of impulse responses, DIRAC supports a variety of measurement configurations. For accurate measurements according to the ISO 3382 standard, you can use the internally or externally generated MLS or sweep signals through a loudspeaker sound source. Survey measurements are easily carried out using a small impulsive sound source, such as a blank pistol.

Speech measurements can be carried out in compliance with the IEC 6026.16 standard, for male and female voices, through an artificial mouth, directional loudspeaker sound source or through direct injection into a sound system, taking into account the impact of background noise.

DIRAC is a valuable tool not only for field and laboratory acoustics engineers, but also for researchers and educational institutions.

Impulse Response Views DIRAC can display an impulse response in several ways. The Energy-Time Curve shows the average energy progression or highlights the energy peaks, the Forward Integration Curve shows the cumulative energy progression, and the Decay Curve displays the backwards integrated energy progression. In a time domain view you can select any part of the impulse response, and then edit, listen to or view details of the selected interval.

Several frequency spectrum views allow convenient analysis in the frequency domain.

Energy Time Frequency Plots To give a clear view of the spectral progress of an impulse response, DIRAC features several types of energy-time-frequency plots, such as the CSD (Cumulative Spectral Decay) and the spectrogram.

Parameter Graphs Acoustical parameters, derived from the impulse responses, can be displayed in table format or graphically. Measurements can be grouped, and over each group of files you can calculate averages, minima, maxima, and standard deviations of the measured acoustical parameters.

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