[go: up one dir, main page]

Tao et al., 2018 - Google Patents

A review of the applications of hybrid active/passive noise control systems in ducts

Tao et al., 2018

Document ID
9109734830992805081
Author
Tao J
Qiu X
Zou H
Publication year
Publication venue
INTER-NOISE and NOISE-CON Congress and Conference Proceedings

External Links

Snippet

The hybrid passive/active control system is a practical choice sometimes in duct noise control, where the tonal or narrowband noise at low frequencies is typically reduced by the active noise control technology. This paper reviews the applications of the hybrid …
Continue reading at www.ingentaconnect.com (other versions)

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or damping of, acoustic waves, e.g. sound
    • G10K11/175—Methods or devices for protecting against, or damping of, acoustic waves, e.g. sound using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or damping of, acoustic waves, e.g. sound using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1784—Methods or devices for protecting against, or damping of, acoustic waves, e.g. sound using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase using multiple inputs; single output
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or damping of, acoustic waves, e.g. sound
    • G10K11/175—Methods or devices for protecting against, or damping of, acoustic waves, e.g. sound using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or damping of, acoustic waves, e.g. sound using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1788—Structural details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING ENGINES OR PUMPS
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/16—Silencing apparatus characterised by method of silencing by using movable parts
    • F01N1/165—Silencing apparatus characterised by method of silencing by using movable parts for adjusting flow area

Similar Documents

Publication Publication Date Title
KR101281732B1 (en) Methods and systems for active sound attenuation in an air handling unit
US8256569B1 (en) Exhaust sound attenuation device and method of use
US7492910B1 (en) Active acoustic filter
CN107407170B (en) Active Noise Control System
TWI567292B (en) Waste air exhaustingdevice having functionalityto abatenoise and modulate noise frequency
CN105509292A (en) Active ventilation muffler
US8479879B2 (en) Expandable chamber acoustic silencer
US10738744B2 (en) Vacuum actuated multi-frequency quarter-wave resonator for an internal combustion engine
CN111699376B (en) Measuring device for determining a measurement parameter of a measurement gas
JPH06348280A (en) Silencer for duct
Tao et al. A review of the applications of hybrid active/passive noise control systems in ducts
CN205536473U (en) Active ventilation noise eliminator
El Chami et al. Enhanced acoustic attenuation performance of a novel absorptive muffler: A Helmholtz equation-based simulation study
Sun et al. Experiments on performances of active-passive hybrid mufflers
CN109448690A (en) Noise impedance test macro and test method in a kind of airflow line
GB2577320A (en) Rotating air flow duct silencer
JPH07160280A (en) Electronic silencer for air conditioning equipment
Sun et al. An improved active-passive hybrid muffler
Miljković Brief introduction to active noise control
JPH01236800A (en) Active silencer
Larsson et al. A system implementation of an active noise control system combined with passive silencers for improved noise reduction in ducts
JPH09258742A (en) Muffler
RU2445505C1 (en) Silencer of active type for motor-and-tractor engines
JPH03174198A (en) Silencing system
Yu Characteristics of side-branch array aeroacoustics and its application in low mach number flow duct noise control