Concept

Écholocalisation

Publications associées (78)

Picosecond acoustics method for measuring the thermodynamical properties of solids and liquids at high pressure and high temperature

Based on the original combination of picosecond acoustics and diamond anvils cell, recent improvements to accurately measure hypersonic sound velocities of liquids and solids under extreme conditions are described. To illustrate the capability of this tech ...

Elsevier Science Bv2014

Robust Acoustic Source Localization of Emergency Signals from Micro Air Vehicles

Dario Floreano, Felix Stephan Schill, Meysam Basiri

In search and rescue missions, Micro Air Vehicles (MAV's) can assist rescuers to faster locate victims inside a large search area and to coordinate their efforts. Acoustic signals play an important role in outdoor rescue operations. Emergency whistles, as ...

2012

Implementing a Cocktail-party Processor via Time-frequency Masking

Benedikt Fasel, Tao-Chun Lee

The ability of human auditory systems to focus on one signal and ignore other signals in an auditory scene where several auditory events are taking place, often referred to as cocktail-party effect, is a key to localization of sound sources. This ability i ...

2012

A Compressive Sensing Based Compressed Neural Network for Sound Source Localization

Microphone arrays are today employed to specify the sound source locations in numerous real time applications such as speech processing in large rooms or acoustic echo cancellation. Signal sources may exist in the near field or far field with respect to th ...

2011

Feasibility Experiment Of Granular Target Options for Future Neutrino Facilities

Leonid Rivkin, Nikolaos Charitonidis

Fragmented solid targets made of either fluidised tungsten powder or static pebble bed of tungsten spheres, have been long proposed and are being studied as an alternative configuration towards high-power (>1 MW of beam power) target systems, suitable for ...

2011

Measurement of acoustic attenuation in South Pole ice

Shirit Cohen, Mathieu Ribordy, Xiaoxia Bai

Using the South Pole Acoustic Test Setup (SPATS) and a retrievable transmitter deployed in holes drilled for the IceCube experiment, we have measured the attenuation of acoustic signals by South Pole ice at depths between 190 m and 500 m. Three data sets, ...

2011

Acoustic impedance synthesis at the diaphragm of moving coil loudspeakers using output feedback control

Hervé Lissek, Romain Boulandet

This paper discusses a time-domain technique for synthesizing acoustic impedance at the diaphragm of a loudspeaker using a proportional-plus-derivative output feedback. The dynamics of electroacoustic transducers such as moving-coil loudspeakers can be rea ...

2011

Audio Spatio-Temporal Fingerprints for Cloudless Real-Time Hands-Free Diarization on Mobile Devices

Danil Korchagin

In this paper, we propose a new low bit rate representation of a sound field and a new method for the corresponding cloudless low delay hands-free diarization suitable for low-performance mobile devices, e.g. mobile phones. The proposed audio spatio-tempor ...

2011

Audio Spatio-Temporal Fingerprints for Cloudless Real-Time Hands-Free Diarization on Mobile Devices

Danil Korchagin

Idiap2011

Multiple harmonic sound sources separation in the under-determined case based on both goniometric and beamforming approaches

Hervé Lissek, Xavier Falourd, Patrick Marmaroli

Usually acoustic beamformer or directive microphones are used in order to focus on known potential locations emitting sounds so as to identify and extract their major noise components. However performances of these techniques depend on the number of microp ...

2009

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