Sound Analyzer

e Audio Quality Test


The most useful and effective tool to determine the best loudspeakers and listening position and to improve the room acoustics.

Extraordinarily easy to use, rigor and reliable, featuring incredibly easy-to-understand charts and measures.

Brings the precision and the performances of a Sound Level Meter and a Graphic Recorder into your standard PC.
Essential for a correct positioning and tuning of subwoofer and an accurate levels setting of your Home Theater system.

Transform your personal computer into a graphic recorder that allows recording and visualization of any type of audio signal. Immediate RT60 measurement. With Audio Quality Test (AQT), developed by Acustica Applicata, you can analyze the real acoustic performance of a listening room from 20 to 2.000 Hz. Specify your room sizes and the software calculate and draw the distribution of fundamental room modes and following harmonics.Sound Analyzer is the best tool to investigate about musical articulation, tonal balance and sound focusing. With the supplied user manual it's very easy to use and to understand AQT graphs. Sound Analyzer with Audio Quality Test is an essential and powerful tool for anyone who wants to increase the sound of his own system and upgrade his knowledge about the Hi-Fi world.

Some technical specifications:

-Displays the true behaviour of room resonances.
-Unveils the frequency ranges where compression and cancelling are located.
-Graphically shows the articulation for both music and speech between 20 and 2.000 Hz.
-Automatically measures and shows the mean articulation of listening environments.
-Analyzes the behaviour of frequency ranges and single tones.
-Draws on screen the shape of the tonal balance.
-Graphical recorder with sliding paper.
-Real time display of RMS and peak value of Sound Pressure Level
-Immediate RT60 measurement for both large band signals and single frequencies.
-Software emulated standard "A", "C" audio filters, working in real-time.
-Different integrating time constants: slow, fast, impulse, AQT, reverb.
-Overload and realtime indicators.
-The graphs of articulation and tonal balance can be printed on paper with an exact scale like a professional graphical recorder (from 100 mm/s to 1 mm/s).
-The graphs can be freely zoomed and panned.

Audio Quality Test analysis:

-Playback of the AQT test signal from both the CD player or from a wave file (the file can be automatically generated).
-Real-time recording of the signal at the listening position, with RMS conversion.
-Automatic "one button" AQT analysis, with the display of the Articulation and Tonal Balance graphs and with automatic mean values evaluation.
-Up to 4 tracks simultaneously on screen and on print to make the comparisons easy.
-Single burst analysis to display the behavior of resonances at specific frequencies and to measure the RT60 for single burst.

Technical requirements for the PC:

-A standard PC with MS Windows 98, NT, 2000, XP, Vista.
-Any standard MPC compliant audio card, 16 bit 44100 Hz, with stable windows drivers. A good card is mandatory to get reliable results of course.
-32 MB of RAM
-Pentium 233 Mhz or above
-5 MB on the hard disk
-Any printer supported by windows

Technical specification of the A.Q.T. (Audio Quality Test) signal:

-"Multiburst" signal digitally generated.
-Peak level: -6 dB relative to 16 bit full range.
-90 dB of dynamic range.
-"Smoothed" burst start and end.
-Each frequency tone lasts 3/15 sec. (200 ms.), and is followed by 1/15 sec. (66 ms.) of dithered silence.
-Bursts starting from 20 Hz, with 2 Hz step up to 300 Hz, with 4 Hz step between 300 Hz and 1.000 Hz, with logarithmic step between 1.000 and 2.000 Hz.
-Reference 1 Khz tone for automatic start and stop detection.