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. Author manuscript; available in PMC: 2020 Jan 7.
Published in final edited form as: IEEE Trans Biomed Circuits Syst. 2019 Oct 18;13(6):1494–1505. doi: 10.1109/TBCAS.2019.2948303

Fig. 13.

Fig. 13.

Banded silicone tubing embedded in silicone rubber was used as a vascular stenosis phantom. Audio recordings from the phantom at sites along the direction of flow were made using the PVDF microphone array and a multi-channel front-end amplifier board.