2,045 Hits in 3.4 sec

Implementation challenges for feedback active noise cancellation

Nitish Krishnamurthy, Mohamed Mansour, Randy Cole
2012 2012 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)  
This work describes the factors limiting the performance in practical implementations of digital active noise cancellation (ANC) in commercial systems.  ...  The causes for each limiting factor are studied and solutions are proposed that significantly improve system performance and robustness.  ...  The next section describes the issues associated with designing signal processing systems for wide-band noise cancellation in headphones.  ... 
doi:10.1109/icassp.2012.6288212 dblp:conf/icassp/KrishnamurthyMC12 fatcat:jolyw4nx4nfhfosotiz2bqk32m

Active Noise Reduction Using Wavelet Transform

Allan Godfrey S. Sagun, Celso B. Co, Bartolome T. Tanguilig III
2020 Zenodo  
For the reduction of noise, a Discrete Wavelet Transform (DWT) was applied for signal processing.  ...  In the reconstruction of filtered output, Inverse Wavelet Transform was utilized for the reference-desired signal to verify the algorithm for noise cancellation.  ...  Noise-canceling headphones come in either active or passive types. Manufacturers of headphone can provide passive noise reduction.  ... 
doi:10.5281/zenodo.5173065 fatcat:c6umh3lhyfgudmgtsrkke5k77e

Physical Classification and Recent Developments of Active Noise Control Systems

M-W. Munir, Waleed Abdulla, Iman Ardekani, Nitish Patel
2017 Proceedings of the 9th International Conference on Signal Processing Systems - ICSPS 2017  
We focus on the developing trends of active noise control in the last decade and discuss latest add-on features and multi-channel active acoustic shielding for open windows.  ...  Passive noise control techniques are impractical and very expensive for lowfrequency noises. To solve such acoustic problem active noise control has been studied since early 20th century.  ...  This reference signal is processed by the adaptive filter W(z) to generate the cancelling signal y'(n) driven by cancelling loudspeaker, where y'(n) = s(n)*y(n) is the cancelling signal, * denotes linear  ... 
doi:10.1145/3163080.3163099 dblp:conf/icsps/MunirAAP17 fatcat:romawkpomnd3bleonuh27aoa3y

Adaptive Active Noise Control Schemes for Headset Applications

D. Veeravasantarao, S Ajay, Prem P. kumar, Laxmidhar Behera
2008 IFAC Proceedings Volumes  
Active Noise Control is a technique of acoustic noise reduction using a secondary source of sound which produces "antinoise" to cancel the primary noise.  ...  This paper presents the design and implementation of adaptive feedback active noise control system (ANC) for head phone applications.  ...  A DSP based platform is developed for Active Noise Cancellation in headphone applications.The real time implementation of Active Noise Control is performed using Texas Instruments TMS320C6713 DSK.  ... 
doi:10.3182/20080706-5-kr-1001.01276 fatcat:fg7nyg3k3bc3bcgywbk4lu64kq

Ultra-broadband active noise cancellation at the ears via optical microphones [article]

Tong Xiao, Xiaojun Qiu, Ben Halkon
2019 arXiv   pre-print
High frequency noise has generally been difficult to be cancelled actively at a person's ears, particularly for active headrest systems aiming to free the listener from noise cancellation headphones.  ...  Here we demonstrate a new error sensing methodology with an optical microphone arrangement for active noise cancellation (ANC).  ...  Chris Chapman for constructing the scanning system. Special thanks to Sipei Zhao for providing helpful discussions and Sebastian Oberst for reviewing the manuscript. Author Contributions  ... 
arXiv:1909.03377v2 fatcat:mahz5a7nofemxhje3p6jzp3aai


Xiaoran Fan, Longfei Shangguan, Siddharth Rupavatharam, Yanyong Zhang, Jie Xiong, Yunfei Ma, Richard Howard
2021 Proceedings of the 27th Annual International Conference on Mobile Computing and Networking  
This paper presents HeadFi, a new design paradigm for bringing intelligence to headphones.  ...  ., accelerometer and gyroscope) that are available in smart headphones. However, for those headphones that do not have such sensors, supporting these functions becomes a daunting task.  ...  Gefeng Wang for providing us testing headphones.  ... 
doi:10.1145/3447993.3448624 fatcat:qv5vhsnoefgajoaiogrckgw36m

Trends and Perspectives for Signal Processing in Consumer Audio [article]

Joshua Atkins, Daniele Giacobello
2014 arXiv   pre-print
The trend in media consumption towards streaming and portability offers new challenges and opportunities for signal processing in audio and acoustics.  ...  In particular, premium headphones offer a gateway for a younger generation to experience high quality sound.  ...  Opportunities for signal processing research lie in the improvement of methods for active control and adaptive filtering applied to noise cancellation and the presentation of three-dimensional spatial  ... 
arXiv:1405.4843v1 fatcat:6cblyznmrnglxekzeetxqtunbe

Comparative study for Active Noise Cancellation using Adaptive filtering and Standing wave pattern

2020 International Journal of Thermal and Environmental Engineering  
To mitigate this noise effect, an Active Noise Cancellation (ANC) headphone is achieved by two effective techniques; Adaptive filtering and Standing wave phenomenon.  ...  For simulation, a noise-free signal will be used as the desired audio signal and a gaussian distributed noise as the unwanted noise signal, these are combined to form noise corrupted speech signal.  ...  This lead to what is called the Active Noise Cancellation (ANC) systems such as ANC headphones according to [4] , [13] .  ... 
doi:10.5383/ijtee.17.02.001 fatcat:lcy7wqopmjh7xnrzoyzjsovzli

Gear Fault Diagnosis using Bispectrum Analysis of ANC based Adaptive Filtered Sound and Vibration Signal

Dibya Prakash Jena, S. N. Panigrahi
2013 International Journal of Acoustics and Vibration  
Active noise cancellation (ANC) has been applied on the acoustical and vibration signals as a denoising filter.  ...  However, in order to improve the signal-to-noise ratio of the captured signals for accurate defect detection, an adaptive filtering has been proposed.  ...  The merging of active noise cancellation techniques and digital signal processing has enabled the control of noise dynamically and adaptively.  ... 
doi:10.20855/ijav.2013.18.2320 fatcat:mnyqk73gmndinp2ke5i6ciwk6e

Implementation of Active Noise Cancellation for Small Confined Spaces

2020 International journal of recent technology and engineering  
Thus our paper proposes a duct system, which will be using the concept of active noise cancellation with the application of digital adoptive feedforward control, where an anti-noise signal is generated  ...  Active noise control is being preferred as passive silencers are bulky and the attenuations achieved for low frequencies are relatively small.  ...  ACTIVE NOISE CANCELLATION Noise cancellation can be classified into two types i.e. passive and active noise cancellation.  ... 
doi:10.35940/ijrte.f9870.038620 fatcat:6qlpalghsrclvmxhx3aeevd7y4

Influence of Active-Noise-Cancelling Headphones on Cognitive Performance and Employee Satisfaction in Open Space Offices

Benjamin Johannes Mueller, Andreas Liebl, Noemi Martin
2019 Proceedings of the ICA congress  
with active noise cancelling switched off or without headphones.  ...  For this reason a study was conducted to examine if active noise cancelling headphones influence cognitive performance and subjective feeling in an open space office.  ...  In order to reduce the ISE, Active Noise Cancelling (ANC) headphones are used more frequently in open space offices.  ... 
doi:10.18154/rwth-conv-238828 fatcat:eh3rgabux5ey7faq5djgtlhyby

Comparative Performance Analysis of Filtered-xLMS and Feedback ANC Adaptive Algorithms to Control the Attenuation of Acoustic Noise

Tushar Kanti Roy
2013 Advances in Signal Processing  
Active noise control (ANC) is one of the most popular applications for adaptive filters.  ...  So, ANC is a method of reducing the unwanted noise by actively generating an anti-noise, cancelling out the noise.  ...  Throughout this paper, we build a noise-cancelling headphone by means of active noise control. There are a number of great applications for active noise cancellation devices.  ... 
doi:10.13189/asp.2013.010401 fatcat:oic2fir2hbe75jh4ka2exjudge

New fMRI methods for hearing and speech

Alan R. Palmer, John Chambers, Deb A. Hall
2006 Acoustical Science and Technology  
In this short review, we outline the challenges presented by the hostile environment for auditory fMRI.  ...  These include scanner designs, passive attenuation, use of specifically designed scanning sequences, specially designed sound delivery systems and active noise control.  ...  New Methods for Stimulus Delivery (Active Noise Control) ANC is a method for canceling the airborne sound of the scanner at the subjects' ears, thus attenuating its level for the listener.  ... 
doi:10.1250/ast.27.125 fatcat:vsmr3dho6vfuxf24whab47lb74

Putting sirens on mute: Noise-canceling smart windows filter out street sounds - [News]

Philip E. Ross
2020 IEEE spectrum  
We have noise-canceling headphones; why not noise-canceling windows as well?  ...  "In an open space, if the noise source is far away-say, from an aircraft-it becomes a challenging problem," Lam explains.  ... 
doi:10.1109/mspec.2020.9173890 fatcat:xdwha7lrl5febfhdzihqrax3sq

Acoustic Path Database for ANC In-Ear Headphone Development

Stefan Liebich, Johannes Fabry, Peter Jax, Peter Vary
2019 Proceedings of the ICA congress  
Active noise cancellation (ANC) for headphones is an emerging field with growing interest in consumer applications.  ...  However, very few measured paths of ANC headphones publically available.  ...  Michael Vorländer, for their support during the measurements in the semi-anechoic chamber.  ... 
doi:10.18154/rwth-conv-239404 fatcat:vzk7ezsio5gk3mdsc5w6gmixdy
« Previous Showing results 1 — 15 out of 2,045 results