DETERMINATION OF ACOUSTIC CHARACTERISTICS OF CAR CABIN

摘要

FIELD: transport.;SUBSTANCE: invention relates to automotive industry, particularly, to determination of passenger cabin acoustic characteristics and can be used for acoustic development of design automobiles. Proposed method consists in measurement of noise level inside the cabin on the journey and comparison of its level with standard magnitude. In includes selection of carrier with cabin meeting the noise standards, is extra road tests wit recording of chassis noise sources, placing of selected carrier on the site and its irradiation with recorded noise from the side of cabin floor outer surface. Note here that noise level inside the cabin is measured and to obtain spectral characteristics. Thereafter, pilot cabin is irradiated with the same noise to define the quality of sound isolation of said pilot cabin.;EFFECT: higher validity, lower costs.;1 dwg