When using a stethoscope with a dual ear head, the user needs to switch the clock face or membrane face mode of the ear head to use it. When using the membrane face, the clock face will be closed to avoid interference. vice versa. Stethoscope effect is common in in-ear headphones, that is, the earplug cord or unit is subjected to external impact or air friction, and the vibration generated by the earplug cord is directly transmitted to the ear canal through the earplug cord (the ear cord is generally harder and is conducive to conducting vibration). Very unpleasant voice.
Back-mounted earphones can greatly improve the stethoscope effect. Personal suggestion is to clamp the earphone cord to the clothes with a cord clip, which can almost completely eliminate the stethoscope effect.
