Device for Monitoring the Noise of Articles

This invention refers to control and measurement technique and can be used for conducting control tests of the articles causing noise, e.g. electric motors for home appliances transformer, etc. in workshops during their full-scale production. Technical result of the invention is to simplify the technological process of the control test of the articles test and to increase accuracy of the noise monitoring. The device comprises microphone 3 connected to the amplifier 4 input which is connected to the primary wind-ing of the transformer 5. The secondary winding of the transformer is connected to the input of the rectifier unit 6 the output of which is connected to the input of the indicator. Between the tested article 1 and microphone 3 there is placed noise isolating plate 2 which has the semicircle shape and has the possibility of rotation. This plate is made with the tacicities of ovellapping sounds coming from the tested article 1 to the microphone during the half of the period of its full rotation. 1 fig.