Sound diagnostic system

A sound diagnostic system comprising an image forming apparatus for forming an image on a recording material and an information processing apparatus capable of communicating with the image forming apparatus,

• wherein the image forming apparatus comprises:
• one or more operating portions;
• a sound collecting portion configured to collect a sonic wave so as to include a period when the operating portion is in operation;
• an acquiring portion, in each of a plurality of time sections when the sonic wave is collected by the sound collecting portion, configured to acquire a data including sonic wave level based on the sonic wave and an operating state of the one or more operating portions;
• and
• a transmission portion configured to transmit the data to the information processing apparatus, and
• wherein the information processing apparatus comprises:
• a receiving portion configured to receive the data;
• a threshold value generating portion configured to generate a threshold value by adding a predetermined value to a first sonic wave level which is the sonic wave level based on the sonic wave collected by the sound collecting portion in a first period;
• and
• a determining portion configured to determine a cause of an abnormal sound by comparing a second sonic wave level which is the sonic wave level based on the sonic wave collected by the sound collecting portion in a second period after the first period and the threshold value, and
• wherein the predetermined value is set so as to be smaller as the first sonic wave level is larger.