Biological sound measurement device, control method for biological sound measurement device, and non-transitory recording medium storing control program for biological sound measurement device

A biological sound measurement device, comprising:

• a sound collecting unit that detects biological sounds of a living body in a state of contact with a body surface of the living body;
• and
• a contact state determination unit that determines whether or not a contact state is active in which the sound collecting unit is in contact with the body surface, based on a change in a sound pressure level of the biological sounds detected by the sound collecting unit, wherein
• the contact state determination unit determines the contact state to be active in a case where, after the sound pressure level increases by a value equal to or greater than a first threshold and then the sound pressure level decreases by a value equal to or greater than a second threshold and less than the first threshold, an amount of fluctuation in the sound pressure level is equal to or less than a third threshold continuously for a predetermined amount of time.

A biological sound measurement device, comprising:

• a sound collecting unit that detects biological sounds of a living body in a state of contact with a body surface of the living body;
• and
• a contact state determination unit that determines whether or not the contact state is active in which the sound collecting unit is in contact with the body surface, based on a change in a sound pressure level of the biological sounds detected by the sound collecting unit, wherein
• the contact state determination unit determines the contact state to be active in a case where, after the sound pressure level increases by a value equal to or greater than a first threshold and then the sound pressure level decreases by a value equal to or greater than a second threshold and less than the first threshold, a biological sound is determined to be included in the biological sounds detected by the sound collecting unit.