Sound diagnosis system, information processing apparatus, and computer-readable storage medium

A sound diagnosis system comprising:

• a microphone configured to receive a sound wave in an apparatus including one or more actuators;
• and
• one or more processors configured to:
• process a signal indicating the sound wave in a predetermined period received by the microphone, and generate sound data indicating a sound wave level in each of a plurality of time sections and an operation status of the one or more actuators in each of the plurality of time sections, each of the plurality of time sections being a division of the predetermined period;
• classify the sound data into a plurality of groups including a first group based on a difference of the operation status of the one or more actuators in each of the plurality of time sections of the sound data;
• for each actuator of the one or more actuators, generate a first threshold value for an actuator based on a difference between a sound wave level in one or more first time sections associated with the actuator, in which the actuator is operating, of a plurality of first sound data classified in the first group and a sound wave level in one or more second time sections associated with the actuator, in which the actuator is not operating, of the plurality of first sound data classified in the first group;
• calculate a comparison value for the actuator based on a difference between a sound wave level in the one or more first time sections associated with the actuator of one or more second sound data classified in the first group and a sound wave level in the one or more second time sections associated with the actuator of the one or more second sound data classified in the first group;
• and
• determine, for each actuator of the one or more actuators, whether or not the comparison value for each of the one or more actuators is greater than the first threshold value for a corresponding actuator.

An information processing apparatus comprising one or more processors configured to:

• acquire sound data indicating a sound wave level in each of a plurality of time sections and an operation status of one or more actuators in each of the plurality of time sections, each of the plurality of time sections being a division of a predetermined period, the sound wave level and the operation status being generated based on a signal indicating a sound wave received in the predetermined period by a microphone in an apparatus including the one or more actuators;
• classify the sound data into a plurality of groups including a first group based on a difference of the operation status of the one or more actuators in each of the plurality of time sections of the sound data;
• generate a threshold value for each of the plurality of time sections, the threshold value being calculated using a sound wave level in each of the plurality of time sections of a plurality of first sound data classified in the first group;
• calculate a comparison value for each of the plurality of time sections based on the sound wave level in each of the plurality of time sections of one or more second sound data classified in the first group;
• and
• determine whether or not the comparison value for each of the plurality of time sections is greater than the threshold value of a corresponding time section of the first group.

An information processing apparatus comprising one or more processors configured to:

• acquire sound data indicating a sound wave level in each of a plurality of time sections and an operation status of one or more actuators in each of the plurality of time sections, each of the plurality of time sections being a division of a predetermined period, the sound wave level and the operation status being generated based on a signal indicating a sound wave received in the predetermined period by a microphone in an apparatus including the one or more actuators;
• classify the sound data into a plurality of groups including a first group based on a difference of the operation status of the one or more actuators in each of the plurality of time sections of the sound data;
• for each actuator of the one or more actuators, generate a first threshold value for an actuator based on a difference between a sound wave level in one or more first time sections associated with the actuator, in which the actuator is operating, of a plurality of first sound data classified in the first group, and a sound wave level in one or more second time sections associated with the actuator, in which the actuator is not operating, of the plurality of first sound data classified in the first group;
• calculate a comparison value for the actuator based on a difference between a sound wave level in the one or more first time sections associated with the actuator of one or more second sound data classified in the first group and a sound wave level in the one or more second time sections associated with the actuator of the one or more second sound data classified in the first group;
• and
• determine, for each actuator of the one or more actuators, whether or not the comparison value for each of the one or more actuators is greater than the first threshold value for a corresponding actuator.

A non-transitory computer-readable storage medium storing a computer program, wherein the computer program, when executed by one or more processors of an apparatus, causes the apparatus to:

• acquire sound data indicating a sound wave level in each of a plurality of time sections and an operation status of one or more actuators in each of the plurality of time sections, each of the plurality of time sections being a division of a predetermined period, the sound wave level and the operation status being generated based on a signal indicating a sound wave received in the predetermined period by a microphone in an apparatus including the one or more actuators;
• classify the sound data into a plurality of groups including a first group based on a difference of the operation status of the one or more actuators in each of the plurality of time sections of the sound data;
• generate a threshold value for each of the plurality of time sections, the threshold value being calculated using a sound wave level in each of the plurality of time sections of a plurality of first sound data classified in the first group;
• and
• calculate a comparison value for each of the plurality of time sections based on the sound wave level in each of the plurality of time sections of one or more second sound data classified in the first group;
• and
• determine whether or not the comparison value for each of the plurality of time sections is greater than the threshold value of a corresponding time section of the first group.