Adaptive Intelligent Ventilation Noise Control Project

Metadata Updated: July 8, 2015

To address the NASA need for quiet on-orbit crew quarters (CQ), Physical Optics Corporation (POC) proposes to develop a new Adaptive Intelligent Ventilation Noise Control (AIVNC) system to reduce acoustic noise inside the CQ and work spaces. AIVNC is based on a new multimodal, skin-like active noise controller that will be easy to retrofit and will not interfere with air flow or generate secondary noise. AIVNC cancels ventilation noise by producing high fidelity, broadband counter-acoustic energy by means of very thin, flat multifrequency active patches under the control of an intelligent adapting module (IAM) based on a spontaneous adapting acoustic model. In Phase I POC demonstrated AIVNC with in-duct streamlined MAPs based on two piezoelectric materials, reproducing high-quality sound at up to 90 dB from 300 to 10000 Hz with very low distortion; a compact driving MAP amplifier; two IAM algorithms predicting ventilation noise one step ahead to cancel it, reducing noise by up to 27 dB rms with real ISS ventilation noise provided by NASA. In Phase II POC will advance/optimize AIVNC components to build a fully functional AIVNC prototype to reduce CQ noise by [HTML_REMOVED]30 dB, satisfying NC 40 requirements for NASA crew quarters.

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Public: This dataset is intended for public access and use. License: U.S. Government Work

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Metadata Created Date April 9, 2015
Metadata Updated Date July 8, 2015

Metadata Source

Harvested from NASA Data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date April 9, 2015
Metadata Updated Date July 8, 2015
Publisher Space Technology Mission Directorate
Unique Identifier TECHPORT_6363
Maintainer Email
Id {$oid: 55942a95c63a7fe59b498d2c}
Public Access Level public
Bureau Code 026:00
Metadata Context
Schema Version
Catalog Describedby
Harvest Object Id 273ccec3-7856-403a-8889-7ae5b27236dc
Harvest Source Id 39e4ad2a-47ca-4507-8258-852babd0fd99
Harvest Source Title NASA Data.json
Data First Published 2006-12-01T00:00:00Z
Homepage URL
Language en-US
Data Last Modified 2015-03-12
Program Code 026:027
Publisher Hierarchy National Aeronautics and Space Administration > Space Technology Mission Directorate
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Source Datajson Identifier True
Source Hash ff209e07cfb26ab7c7160e1d73ab58c413f17fad
Source Schema Version 1.1
Temporal 2006-12-01T00:00:00Z/2008-12-01T00:00:00Z

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