Monitoring devices for detecting bearing faults, measuring noise and monitoring wayside vehicle condition; electronic apparatus, namely, acoustic detectors; measuring devices and apparatus for measuring noise and acoustic frequencies; electronic sensing apparatus for analysis of railway vehicle performance; software for the monitoring, detecting, measuring and sensing of noise and acoustic frequencies

'acoust':17,27,49 'analysi':33 'apparatus':15,22,31 'bear':5 'condit':13 'detect':4,42 'detector':18 'devic':2,20 'electron':14,29 'fault':6 'frequenc':28,50 'measur':7,19,24,43 'monitor':1,10,41 'name':16 'nois':8,25,47 'perform':37 'railway':35 'sens':30,45 'softwar':38 'vehicl':12,36 'waysid':11

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