Method and apparatus for checking an acoustic test fixture
AssigneeApple Inc.
InventorsJustin Gregg, Michael M. Lee
Life of this patent
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Abstract
A body has a first portion whose exterior surface is similar to that of a corresponding, first portion of a portable media device. An acoustic aperture is formed at a location that is similar to that of a built-in earpiece, speaker, or microphone aperture in the media device. An acoustic port is formed in the exterior surface of the body, and is adapted to be coupled to a sound test tool. An internal cavity acoustically couples the acoustic port to the acoustic aperture. Other embodiments are also described and claimed.
Claims7
A method for checking a test fixture, the test fixture to be used for acoustic testing of a portable media device under test (DUT), the method comprising:
- a) installing a calibrator device to cooperate with the test fixture, the calibrator device having a portion whose exterior shape and dimensions mimic those of a corresponding portion of the DUT so that the calibrator device fits with the test fixture in the same way as the DUT;
- b) coupling an acoustic input or acoustic output port of a sound test tool to an acoustic port of the calibrator device, the calibrator device having an internal cavity that acoustically couples the acoustic port to an acoustic aperture on its exterior surface, the acoustic aperture of the calibrator device being aligned with an acoustic aperture of the test fixture for acoustic coupling purposes;
- and
- c) measuring a sound test signal that propagates through the test fixture, through the internal cavity of the calibrator device, and through the acoustic apertures of the calibrator device and the test fixture.
A method for checking a test fixture, the test fixture to be used for acoustic testing of a cellular telephone handset under test (DUT), the method comprising:
- a) installing a calibrator device to cooperate with the test fixture, the calibrator device having a portion whose exterior shape and dimensions mimic those of a corresponding portion of the DUT so that the calibrator device fits with the test fixture in the same way as the DUT;
- b) coupling an acoustic input or acoustic output port of a sound test tool to an acoustic port of the calibrator device, the calibrator device having an internal cavity that acoustically couples the acoustic port to an acoustic aperture on its exterior surface, the acoustic aperture of the calibrator device being aligned with an acoustic aperture of the test fixture for acoustic coupling purposes;
- and
- c) measuring a sound test signal that propagates through the test fixture, through the internal cavity of the calibrator device, and through the acoustic apertures of the calibrator device and the test fixture.
Dependencies are inferred from the claim text.