Unisyn Medical Technologies, Inc.

Acoustis Marketing Research, Inc.

Joseph Leo Valenti, Iii

An apparatus, method, and system for analyzing the response of a device under test using a signal generated by an audio card comprises a housing. The apparatus comprises a first connector coupled to the housing and configured to couple electrically with an output of the audio card and to receive a first signal from the audio card. The apparatus also comprises a second connector being electrically coupled with the first connector and configured to interface with the device under test in order to transmit the first signal to a device under test. The apparatus also comprises a third connector configured to receive a second signal from the device under test. The apparatus also comprises a fourth connector being electrically coupled with the third connector and configured to transmit the second signal to an input of the audio card.

Personal computer based audio frequency impedance analyzer

Various embodiments provide methods, apparatuses, and systems for sampling a waveform using relatively prime sampling methods. A waveform with a first plurality of cycles and a first frequency may be sampled with a waveform sampling device. Sampling the waveform may include sampling the waveform at a sampling rate of the waveform sampling device. Sampling the waveform may include taking a sample number of samples of the waveform where the sample number may be relatively prime with respect to the number of cycles of the waveform. The sample number of samples of the waveform may be interleaved with a controller.

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Longmont, CO, United States of America

Joseph Leo Valenti, Iii