Soft-db Opus Suite Building Acoustics Module Reverberation Manuel d'utilisateur

Opus Suite Building Acoustics Module Reverberation Time ISO 3382 User Guide – v1.3 2012-12-06 Alto 6-Channel Concerto 4-Channel I-Track 6-Channel Co

9 5 Main Interface The main interface is divided into five sections: 1) Measure controls (see section 6.1, p. 10) 2) File info (see section 6.2,

10 5.1 Measure Controls RUN/PAUSE/CONTINUE (Automatic mode) When the user clicks this button, the measurement process is launched. The RUN button t

11 be changed. This indicator displays the specified measure length. Clicking on this indicator launches the setup interface where the measure leng

12 Display Menu Decay: This item sets the interface to display the time decay for a specified frequency band or global. Spectrum: This item sets the

13 5.5.1 Decay This display shows the response to a noise interruption or impulse. It also superimposes the curves used to evaluate RT values and th

14 5.5.2 Spectrum This display shows a selected result for each frequency band and global using a bar graph. Spectrum Type Tab This tab switches be

15 5.5.3 Data This display shows all data for all frequency bands and global in a table form. Spectrum Type Tab This tab switches between 1/1 octav

16 6 Setup Input Setup These controls allow selecting the input channel, the input type and the input range from drop down lists. Measure Mode Thi

17 7 Measurement modes tutorials 7.1 Automatic Interrupted Noise This method evaluates the reverberation time by analysing the noise level decay oc

18 Step 4 Stopping the Measurement The measurement stops when the specified number of Averages has been completed. However, the user can stop the me

i CONTENTS 1 Introduction ...

19 Step 3 Running the Measurement Click the button to launch the measurement process. The noise will begin and the average number should increas

20 5) Select the appropriate Trigger Level4 necessary to detect the noise interruption. 6) Click OK to return to the main interface. Step 2 Runnin

21 The measurement is saved by clicking the button. Once complete, the current file indicator will display the current file name. 7.4 Manual Imp

22 Step 3 Adding More Average Iterations When an average iteration is finished, click the button. The process should go through the same steps des

23 8 Explorer Dialog Explorer Window Controls and Indicators File/Folder Operators • Go to parent directory • Open directory • Create new folder

24 9 File Manager The File manager is used to perform most file operations: • Navigate the directory structure • Create folders • Rename files an

25 Directory Path Displays the path of the active directory. Shortcuts Allows easy access to common directories. When the File Manager is used on a s

26 Appendix 1: Concerto Hardware Connections 4 Inputs Mic Stand DC in ¼ 20 insert Power-on button Second Battery 2 Outputs USB port Right click

27 Power on/off Turn On Press the trigger button located at the back of the unit This key has two (2) functions: 1. To turn the unit ON. 2. Start

28 Power Reset If the Concerto happens to crash and it is not possible to take back the control, a power reset might be necessary. To complete the po

2 1 Introduction Congratulations on your purchase of the Opus Suite RT-60 Module. The Opus Software Suite is a Sound and Vibration software. The c

29 Inputs and Signal Processing Specifications (Embedded Signal Ranger MK3 DSP Board) DSP Processor Texas Instruments TMS320C6424 Inputs 4 Outputs 2

30 Appendix 2: 1/3 Octave Filters – IEC 61260 Class 1/ANSI S1.11 1/3 Octave Filters The 1/3 octave filters are computed at low-level in real time (at

31 Shape Test Numerical Results at 1 kHz The following table presents the numerical results of the shape test at 1 kHz: Frequency (Hz) Low limit (dB)

32 1/3 Octave Filter Linearity The linearity of the 1/3-octave filter has been measured for both ranges (low and high). The experimentation is done w

33 Frequency (Hz) Saturation Level (dB) Minimum Linear Level (dB) Linear Dynamic Range (dB) Noise Floor (dB) 12500 120.5 27.0 93.5 17.5 16000 120.5

34 Frequency (Hz) Saturation Level (dB) Minimum Linear Level (dB) Linear Dynamic Range (dB) Noise Floor (dB) 10000 132.5 33.5 99.0 23.5 12500 132.5

35 Summation Test (High Range Case)-0.5-0.4-0.3-0.2-0.100.10.20.30.40.510 1001000 10000 100000Frequency (Hz)Amplitude dB

3 • Early Decay Time (EDT) • Dynamic • Clarity (C80)1 • Central Time (Ts)* • Definition (D50)*

4 2 Compatible Hardware Every hardware option has an embedded state of the art Soft dB SR-MK3 DSP board allowing real-time and precise measurement w

5 3 Opus Environment The Concerto unit comes equipped with the Opus Environment. This environment acts as a main interface that gives access to t

6 The Quit button will quit the application differently according to the hardware used. Concerto hardware: • Hold 5 sec to shutdown the unit. •

7 4 Quick Start Step 1 Select Measure Mode Click on the button to select the measure mode from the menu. The measure modes are: For purposes of

8 Step 4 Visualize the Measurement Click on the button to select the display from the menu. The available displays are: Decay This display shows