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rta_3200_training.book Page iii Monday, March 2, 1998 11:00 AM
3200 TRAINING MANUAL
Selecting the High and Low Pass Filters......................................7-6
Selecting Units .............................................................................7-7
Calibration....................................................................................7-8
Averaging ...................................................................................7-13
Zoom Processing ........................................................................7-15
Integration and Double Integration ............................................7-16
Chapter 8
Room Acoustics ................................................................. 8-1
Sound Decay Measurements (RT60's) .............................................8-2
Setting up the RTA for RT60 measurements ...............................8-2
Creating a Measurement File .......................................................8-3
Setting up the Microphones and Noise Source ............................8-5
Establishing the Averaging Parameters for the RT60 Measurement
8-7
Setting the Signal Generator Delay............................................8-11
Making the RT60 Measurement.................................................8-12
Viewing the RT60 (Reverberation Time) Values. .....................8-16
Sound Transmission Loss Measurements ..................................8-21
Setting Up the RTA for Sound Transmission Loss Measurements ..
8-22
Making Airborne Sound Transmission Loss Measurements .....8-27
Impact Sound Isolation...............................................................8-34
Noise Ratings .................................................................................8-35
Noise Criterion (NC [A]) ...........................................................8-35
Noise Rating Curves (NR [B]) ...................................................8-36
Room Criterion (RC [C]) ...........................................................8-36
Chapter 9
Statistics and Ln Calculations ........................................... 9-1
Hiding a trace ...............................................................................9-4
Storing the Ln Trace.....................................................................9-4
Storing the Statistics Table...........................................................9-5
Recalling Ln traces.......................................................................9-5
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