Incubator-based active noise control device: comparison to ear covers and noise reduction zone quantification.

"Competing interests The authors have read the journal’s policy and have the following competing interests. GMH is a paid employee, board member, and shareholder of Invictus Medical, and is a named inventor of patents assigned to the company that manufactures the equipment used in this study. SS and PSW have received consulting fees for technical assistance with the development of the equipment used in the study. SS is a named inventor for patents licensed by the company that manufactures the equipment used in this study. KAA has no competing interests."

"Funding This work was supported in part by the National Institutes of Health, grant 1R43DC018464 (GMH). Invictus Medical (invictusmed.com) provided the equipment used in this study (GMH). Invictus Medical provided support in the form of salary and stock for GMH. GMH is the Chief Executive Officer and the Chief Scientific Officer of this company. SS and PSW have received consulting fees for technical assistance with the development of the equipment used in the study. Beyond what is noted in the Author contributions section, neither the board of directors nor the investors of the funder have had any influence on any aspect of this research."