frequencies (third-octave-bands) of an automobile gear (58 - 78 db)

automobile gear at 1600 Hz (58 - 78 db)

1250 Hz in comparison with 1600 Hz (58 - 78 db)

62ms db-sequence of an automobile door shut (75 - 85 db)

db-image of an automobile door shut (75 - 85 db)