Apparatus, system, and method of testing an acoustic device

An apparatus comprising:

• a memory to store a reference profile defining a plurality of reference values corresponding to a plurality of frequency sub-bands, respectively, wherein the reference profile comprises threshold information defining a plurality of thresholds corresponding to the plurality of frequency sub-bands, wherein the plurality of thresholds comprises a first threshold corresponding to a first frequency sub-band, and a second threshold corresponding to a second frequency sub-band, the second threshold is different from the first threshold, wherein the first threshold comprises a first failure threshold to identify failure with respect to the first frequency sub-band, wherein the second threshold comprises a second failure threshold, different from the first failure threshold, to identify failure with respect to the second frequency sub-band;
• and
• an acoustic device tester to:
• process input acoustic information of a tested acoustic device to determine a tested acoustic value distribution for the tested acoustic device in the plurality of frequency sub-bands, the tested acoustic value distribution for the tested acoustic device comprising a plurality of tested values in the plurality of frequency sub-bands, respectively;
• determine whether or not the tested acoustic device meets a predefined testing criterion based on the tested acoustic value distribution and the reference profile, wherein the acoustic device tester is configured to:
• determine a plurality of difference values corresponding to the plurality of frequency sub-bands, respectively, wherein the plurality of difference values comprises a first difference value corresponding to the first frequency sub-band and a second difference value corresponding to the second frequency sub-band, wherein the first difference value comprises a difference between a first tested value corresponding to the first frequency sub-band and a first reference value corresponding to the first frequency sub-band, and wherein the second difference value comprises a difference between a second tested value corresponding to the second frequency sub-band and a second reference value corresponding to the second frequency sub-band;
• and
• determine whether or not the tested acoustic device meets the predefined testing criterion based on the plurality of difference values and the plurality of thresholds;
• and
• generate an output to indicate whether or not the tested acoustic device meets the predefined testing criterion.

A method of testing an acoustic device, the method comprising:

• processing input acoustic information of a tested acoustic device to determine a tested acoustic value distribution for the tested acoustic device in a plurality of frequency sub-bands, the tested acoustic value distribution for the tested acoustic device comprising a plurality of tested values in the plurality of frequency sub-bands, respectively;
• determining whether or not the tested acoustic device meets a predefined testing criterion based on the tested acoustic value distribution and a reference profile defining a plurality of reference values corresponding to the plurality of frequency sub-bands, respectively, wherein the reference profile comprises threshold information defining a plurality of thresholds corresponding to the plurality of frequency sub-bands, wherein the plurality of thresholds comprises a first threshold corresponding to a first frequency sub-band, and a second threshold corresponding to a second frequency sub-band, the second threshold is different from the first threshold, wherein the first threshold comprises a first failure threshold to identify failure with respect to the first frequency sub-band, wherein the second threshold comprises a second failure threshold, different from the first failure threshold, to identify failure with respect to the second frequency sub-band, wherein determining whether or not the tested acoustic device meets the predefined testing criterion comprises:
• determining a plurality of difference values corresponding to the plurality of frequency sub-bands, respectively, wherein the plurality of difference values comprises a first difference value corresponding to the first frequency sub-band and a second difference value corresponding to the second frequency sub-band, wherein the first difference value comprises a difference between a first tested value corresponding to the first frequency sub-band and a first reference value corresponding to the first frequency sub-band, and wherein the second difference value comprises a difference between a second tested value corresponding to the second frequency sub-band and a second reference value corresponding to the second frequency sub-band;
• and
• determining whether or not the tested acoustic device meets the predefined testing criterion based on the plurality of difference values and the plurality of thresholds;
• and
• generating an output to indicate whether or not the tested acoustic device meets the predefined testing criterion.