Performance analysis of an adaptive feedback active noise control based earmuffs system

Moon, Seong-Pil; Lee, Jeong Woo; Chang, Tae‐Gyu

doi:10.1016/j.apacoust.2015.03.006

Cited by 12 publications

(11 citation statements)

References 17 publications

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“…However, from this function, it is hard to recognize the effect of delay error intuitively, since the transfer function-based expression does not directly provide explicit and geometric interpretations in the domain of physical parameters, such as delay, noise characteristics parameters [4]. Moreover, the combined effect of the adaptive filter W(z) on the secondary path error term is determined depending on characteristics of the primary noise d(n).…”

Section: The Stability Problem Of the Feedback Anc Systemmentioning

confidence: 99%

“…The filter response of feedback ANC reflects the noise's spectral characteristic and its frequency resolution depends on the filter length N. Therefore, increase of the primary noise's bandwidth or decrease of number of the FIR filter taps results in decrease of the stability bound. For instance, a rotating machine noise has wide bandwidth from tens to hundreds of Hz that can be modeled with the 2nd order autoregressive process [4]. The noise's bandwidth property results in wider frequency response than the sinc function-shaped response in (8).…”

Section: ( )|mentioning

confidence: 99%

“…Theoretically, if the secondary path model is perfectly estimated, the feedback ANC scheme has no stability problem [2][3][4]. However, in practice, it is not available to exactly estimate them as a linear filter model, since the electro-acoustic devices and the acoustic path are a non-linear and time-varying system [3,[7][8][9].…”

Section: Introductionmentioning

confidence: 99%

“…The structure of the feedback ANC is considered as one of the typical internal model control (IMC) in the sense that the estimated model of the secondary path is used for the generation of a reference signal [2]. For this structural nature, in applications where noise sources are many and propagation paths of noises are unspecified, e.g., ANC headphones, the feedback ANC is preferred to be implemented rather than the feedforward scheme, in which independent reference sensors need to be installed [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

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The Derivation of the Stability Bound of the Feedback ANC System That Has an Error in the Estimated Secondary Path Model

Moon¹,

Chang²

2018

Applied Sciences

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This paper investigates the stability problem of the feedback active noise control (ANC) system, which can be caused by the modeling error of the electro-acoustic path estimation in its feedback mechanism. A stability analysis method is proposed to obtain the stability bound as a form of a closed-form equation in terms of the delay error length of the secondary path, the ANC filter length, and the primary noise frequency. In the proposed method, the system's open loop magnitude and phase response equations are separately exploited and approximated within the Nyquist stability criterion. The stability bound of the proposed method is verified by comparing both the original Nyquist stability condition and the simulation results.

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Section: The Stability Problem Of the Feedback Anc Systemmentioning

confidence: 99%

Section: ( )|mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The Derivation of the Stability Bound of the Feedback ANC System That Has an Error in the Estimated Secondary Path Model

Moon¹,

Chang²

2018

Applied Sciences

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“…In the automotive environment a variety of active control systems have been proposed for both engine [7,8] and road noise control [9,10]. More broadly, active control technology has been applied to fan noise [11], active earmuffs [12], noise transmission through windows [13] and sound radiation from a helicopter transmission [14].…”

Section: Introductionmentioning

confidence: 99%

Active noise control of a diesel generator in a luxury yacht

Cheer

Elliott

2016

Applied Acoustics

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Active noise control has been applied to a variety of systems in order to improve performance without the increases in size and weight that would otherwise be required by traditional passive noise control treatments. This paper investigates the application of an active noise control system to the control of generator noise in the master cabin of a luxury yacht. A multichannel, multi-tonal active noise control system employing loudspeakers and microphones in the master cabin of the yacht is investigated. It is shown that, due to the high number of engine orders produced by the generator, in order to achieve significantly perceptible levels of noise attenuation it is necessary to control at least 7 individual orders. A controller is investigated which targets 19 engine orders and it is shown to achieve in excess of 5 dB broadband attenuation, whilst achieving up to 23 dB attenuation in individual orders. This corresponds to a 23% reduction in the Zwicker loudness.

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Active soundproof earmuffs system with passive noise insulation structure compensation

Jian

2020

Applied Acoustics

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Performance analysis of an adaptive feedback active noise control based earmuffs system

Cited by 12 publications

References 17 publications

The Derivation of the Stability Bound of the Feedback ANC System That Has an Error in the Estimated Secondary Path Model

The Derivation of the Stability Bound of the Feedback ANC System That Has an Error in the Estimated Secondary Path Model

Active noise control of a diesel generator in a luxury yacht

Active soundproof earmuffs system with passive noise insulation structure compensation

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