A power-efficient circuit design of feed-forward FxLMS active noise cancellation for in-ear headphones

2015 ◽  
Author(s):  
Hong-Son Vu ◽  
Kuan-Hung Chen ◽  
Shih-Feng Sun ◽  
Tien-Mau Fong ◽  
Che-Wei Hsu ◽  
...  
Keyword(s):  
Circuit Design ◽  
Noise Cancellation ◽  
Feed Forward ◽  
Power Efficient ◽  
Active Noise Cancellation ◽  
Active Noise

A Power-Efficient Noise Canceling Technique Using Signal-Suppression Feed-Forward for Wideband LNAs

2015 ◽  
Vol 643 ◽  
pp. 109-116
Author(s):  
Daiki Oki ◽  
Satoru Kawauchi ◽  
Cong Bing Li ◽  
Masataka Kamiyama ◽  
Seiichi Banba ◽  
...  
Keyword(s):  
Power Consumption ◽  
Input Signal ◽  
Noise Figure ◽  
Wide Band ◽  
Noise Cancellation ◽  
Cmos Process ◽  
Feed Forward ◽  
Power Efficient ◽  
Signal Suppression ◽  
Noise Canceling

This paper presents a power-efficient noise-canceling technique based on the feed-forward amplifiers, considering a fundamental tradeoff between noise figure (NF) and power consumption in the design of wide-band amplifiers. By suppressing the input signal of the noise cancellation amplifier, the nonlinear effect on the amplifier can be reduced, as well as the power consumption can be smaller. Furthermore, as a lower gain of the noise-canceling sub-amplifier can be achieved simultaneously, further reduction of the power consumption becomes possible. The verification of the proposed technique is conducted with Spectre simulation using 90nm CMOS process.

Prediction filter design for active noise cancellation headphones

2013 ◽  
Vol 7 (6) ◽  
pp. 497-504 ◽  
Author(s):  
Markus Guldenschuh ◽  
Robert Höldrich
Keyword(s):  
Filter Design ◽  
Noise Cancellation ◽  
Active Noise Cancellation ◽  
Active Noise ◽  
Prediction Filter

Study of the Effects of Active Noise Cancellation on Music Playback

2021 ◽  
Author(s):  
Sattwik Basu ◽  
Jeffrey Tackett ◽  
David Trumpy ◽  
Adam Walt ◽  
Santosh Adari
Keyword(s):  
Noise Cancellation ◽  
Active Noise Cancellation ◽  
Active Noise

Active noise cancellation technique for highly accurate EB lithography systems

1997 ◽  
Author(s):  
Koji Nagata ◽  
Masahide Okumura ◽  
Norio Saitou ◽  
Hiroyoshi Ando ◽  
Toshiyuki Morimura ◽  
...  
Keyword(s):  
Noise Cancellation ◽  
Active Noise Cancellation ◽  
Active Noise

Design of an efficient active noise cancellation circuit for in-ear headphones

2014 ◽  
Author(s):  
Kuan-Hung Chen ◽  
Hong-Son Vu ◽  
Kuo-Yuan Weng ◽  
Jin-Huang Huang ◽  
Yu-Ting Tsai ◽  
...  
Keyword(s):  
Noise Cancellation ◽  
Active Noise Cancellation ◽  
Active Noise

Regularized spherical harmonics-domain spatial active noise cancellation in a reverberant room

2021 ◽  
Vol 263 (2) ◽  
pp. 4733-4742
Author(s):  
Shoken Kaneko ◽  
Nirupam Roy ◽  
Nail Gumerov ◽  
Ramani Duraiswami
Keyword(s):  
Cost Function ◽  
Spherical Harmonics ◽  
Open Space ◽  
Microphone Array ◽  
Noise Cancellation ◽  
Target Area ◽  
Acoustic Environment ◽  
Active Noise Cancellation ◽  
Active Noise ◽  
Global Cost

Active Noise Cancellation (ANC) at a target area in an open space, as opposed to cancellation in the ears through headphones, can lead to future applications. For instance, a personal acoustic environment in an airplane seat or inside a car, or a quiet zone in a noisy shared workspace can be possible using such open-space ANC without any uncomfortable on-body audio equipment. Recent advancements reinforce the practicality of such systems. However, regularization of the cancellation signal has been a crucial challenge in open-space ANC as it causes amplification of noise at locations away from the target area. This work presents a spherical harmonics-domain feed-forward spatial ANC method with a room-wide global cost function to address this issue. This room-wide global cost function is used for optimizing the set of regularization hyperparameters, while at run time only local information captured by a microphone array surrounding the target listening zone is required. Numerical experiments applying the proposed method in a simulated reverberant room show the effectiveness of the proposed method in creating a specific zone of silence with low to moderate noise amplification in the rest of the room.

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