BRUEL & KJAER 2032 Instruction Manual page 10

Operators .......................................................................................................................... 147
13.2. DEFINITION OF FUNCTIONS ..................•...................................................................... 147
Instantaneous Time Function Ch.A or Ch.B ................................................................ 147
Instantaneous Time Function Ch.A vs. Ch.B ............................................................... 148
Enhanced Time Function Ch.A or Ch.B ....................................................................... 148
Enhanced Time Function Ch.A vs. Ch.B ...................................................................... 148
Probability Density Function Ch.A or Ch.B .................................................................. 149
Probability Distribution Ch.A or Ch.B ........................................................................... 149
Instantaneous Spectrum Ch.A or Ch.B ........................................................................ 150
Enhanced Spectrum Ch.A or Ch.B ............................................................................... 150
Autospectrum Ch.A or Ch.B .......................................................................................... 151
Cross Spectrum ............................................................................................................... 151
Frequency Response H
1 ,
1 /H
1 ,
H
2 ,
1 /H
2 .................•..............................•••••.•••...••••••••..
151
Coherence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152
Signal to Noise Ratio .. . . .. . . . . . . . . . .. . . . .. . . . . . . .. .. .. .. .. .. .. .. .. . .. .. .. .. .. .. . . . . . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 153
Coherent Output Power and Non-coherent Output Power . . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 153
Autocorrelation Ch.A or Ch.B ........................................................................................ 154
Cross Correlation .. .. .. .. .. .. .. . . . . .. . . . . . . . . .. .. . . .. .. . . .. .. .. .. .. .. . .. .. .. .. .. .. . . . . . .. .. .. .. .. .. .. .. .. .. .. .. . . . . . . . . . .. .. . 155
Impulse Response ........................................................................................................... 156
Sound Intensity ................................................................................................................ 157
Cepstrum Ch.A or Ch.B ................................................................................................. 157
Littered Spectrum Ch.A or Ch.B ................................................................................... 158
13.3. AVERAGING ..................................................................................................................... 158
Linear Averaging ............................................................................................................. 158
Exponential Averaging .................................................................................................... 158
Peak Averaging ............................................................................................................... 159
14. SERVICE AND REPAIR ..................................................................................................................................... 160