Publications associées à Echo suppression and cancellation

On the Implementation Complexity of Digital Full-Duplex Self-Interference Cancellation

Andreas Peter Burg, Alexios Konstantinos Balatsoukas Stimming, Andreas Toftegaard Kristensen

In-band full-duplex systems promise to further increase the throughput of wireless systems, by simultaneously transmitting and receiving on the same frequency band. However, concurrent transmission generates a strong self-interference signal at the receive ...

IEEE2020

Engineered acoustic mismatch for anchor loss control in contour mode resonators

Luis Guillermo Villanueva Torrijo, Annalisa De Pastina, Andrea Lozzi

Improving the quality factor (Q) of electromechanical resonators is of paramount importance for different applications, ranging from RF filtering to sensing. In this paper, we present a modified fabrication process flow for contour mode resonators to simul ...

2019

End-to-End Acoustic Modeling using Convolutional Neural Networks for HMM-based Automatic Speech Recognition

Ronan Collobert, Dimitri Palaz

In hidden Markov model (HMM) based automatic speech recognition (ASR) system, modeling the statistical relationship between the acoustic speech signal and the HMM states that represent linguistically motivated subword units such as phonemes is a crucial st ...

ELSEVIER SCIENCE BV2019

Distributed Acoustic Impedance Measurement Based On Forward Stimulated Brillouin Scattering

Luc Thévenaz, Marcelo Alfonso Soto Hernandez, Zhisheng Yang, Desmond Chow Ming Chia

A technique to measure the local spectrum of forward stimulated Brillouin scattering (FSBS) along a standard optical fiber is proposed. The local acoustic impedance of surrounding material is retrieved from the measured FSBS resonance linewidth. ...

Optical Society of America2018

Distributed forward Brillouin sensor based on local light phase recovery

Luc Thévenaz, Marcelo Alfonso Soto Hernandez, Zhisheng Yang, Desmond Chow Ming Chia

The distributed fibre sensing technology based on backward stimulated Brillouin scattering (BSBS) is experiencing a rapid development. However, all reported implementations of distributed Brillouin fibre sensors until today are restricted to detecting phys ...

2018

Method and apparatus for presenting to a user of a wearable apparatus additional information related to an audio scene

Martin Vetterli, Ivan Dokmanic, Juri Ranieri

A method for presenting to a user of a wearable audio device a modified audio scene together with additional information related to the audio scene, comprising: capturing audio signals with a plurality of microphones; outputting an audio signal with a plur ...

2017

On the Optimisation of Multi-Degree-of-Freedom Acoustic Impedances of Low-Frequency Electroacoustic Absorbers for Room Modal Equalisation

Hervé Lissek, Etienne Thierry Jean-Luc Rivet, Sami Driss Karkar

Low-frequency electroacoustic absorbers have recently been developed as a solution for the modal equalisation. Firstly investigated in waveguides, the technique consists in matching the acoustic impedance at a closed-box loudspeaker diaphragm to the charac ...

2017

Effective SAW excitation on non-piezoelectric substrate using AlScN piezoelectric thin film BAW/SAW hybrid transducer

Paul Muralt, Mohammad Fazel Parsapour Kolour, Vladimir Pashchenko, Sylvain Ballandras

Acoustic delay lines based on Al0.85Sc0.15N thin film hybrid transducers were investigated by finite element modeling. It was found that an acoustic impedance matching between transducer and non-piezoelectric substrate material plays a crucial role to effi ...

Ieee2017

Optimization of electroacoustic resonators for semi-active room equalization in the low-frequency range

Hervé Lissek, Etienne Thierry Jean-Luc Rivet

At low frequencies, standing waves within the room cause large frequency-response variations in the listening environment, such as audio rooms or recording studios. This unwanted phenomenon has a significant impact on the sound quality of an audio system. ...

2013

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Echo suppression and cancellation

On the Implementation Complexity of Digital Full-Duplex Self-Interference Cancellation

Engineered acoustic mismatch for anchor loss control in contour mode resonators

End-to-End Acoustic Modeling using Convolutional Neural Networks for HMM-based Automatic Speech Recognition

Distributed Acoustic Impedance Measurement Based On Forward Stimulated Brillouin Scattering

Distributed forward Brillouin sensor based on local light phase recovery

Method and apparatus for presenting to a user of a wearable apparatus additional information related to an audio scene

On the Optimisation of Multi-Degree-of-Freedom Acoustic Impedances of Low-Frequency Electroacoustic Absorbers for Room Modal Equalisation

Effective SAW excitation on non-piezoelectric substrate using AlScN piezoelectric thin film BAW/SAW hybrid transducer

Optimization of electroacoustic resonators for semi-active room equalization in the low-frequency range

Electroacoustic metamaterials: achieving negative acoustic properties with shunt loudspeakers

Graph Chatbot

Chattez avec Graph Search

End-to-End Acoustic Modeling using Convolutional Neural Networks for HMM-based Automatic Speech Recognition

Engineered acoustic mismatch for anchor loss control in contour mode resonators

Distributed Acoustic Impedance Measurement Based On Forward Stimulated Brillouin Scattering

Effective SAW excitation on non-piezoelectric substrate using AlScN piezoelectric thin film BAW/SAW hybrid transducer

Distributed forward Brillouin sensor based on local light phase recovery

Electroacoustic metamaterials: achieving negative acoustic properties with shunt loudspeakers

Method and apparatus for presenting to a user of a wearable apparatus additional information related to an audio scene

Optimization of electroacoustic resonators for semi-active room equalization in the low-frequency range

On the Optimisation of Multi-Degree-of-Freedom Acoustic Impedances of Low-Frequency Electroacoustic Absorbers for Room Modal Equalisation

On the Implementation Complexity of Digital Full-Duplex Self-Interference Cancellation