Adaptive Intelligent Ventilation Noise Control, Phase II

Metadata Updated: November 12, 2020

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 >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: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Dates

Metadata Created Date November 12, 2020
Metadata Updated Date November 12, 2020

Metadata Source

Harvested from NASA Data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date November 12, 2020
Metadata Updated Date November 12, 2020
Publisher Space Technology Mission Directorate
Unique Identifier Unknown
Maintainer
Identifier TECHPORT_6363
Data First Published 2008-12-01
Data Last Modified 2020-01-29
Public Access Level public
Bureau Code 026:00
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID https://data.nasa.gov/data.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Homepage URL https://techport.nasa.gov/view/6363
Program Code 026:027
Source Datajson Identifier True
Source Hash b44198926926cae1565614c38e5277c097a73168
Source Schema Version 1.1

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