Publications

• Communication dans un congrès

Low-complexity feature extraction unit for “Wake-on-Feature” speech processing

Simon Lecoq, Jean Le Bellego, Angel Gonzalez, Benoit Larras, Antoine Frappé

In the context of energy-constrained automatic speech recognition, a modeling and simulation tool is presented to evaluate the hardware complexity of a feature extraction unit. The objective is to evaluate the minimal amount of features necessary for voice-activity detection, considering limited…

2018 25th IEEE International Conference on Electronics, Circuits and Systems (ICECS), Dec 2018, Bordeaux, France. pp.677-680, ⟨10.1109/ICECS.2018.8617967⟩. ⟨hal-03377038⟩

• Communication dans un congrès

Insights into water-rock interactions in meteorites from diffraction tomography

Agnes Elmaleh, P. Wright Jonathan, Benoit Baptiste, C. Tarantino Serena, Beatrice Doisneau, Erik Elkaim, David Troadec

31st European Crystallography Meeting, ECM31, Symposium MS13 - New insights on diffraction studies of minerals and related materials, Aug 2018, Oviedo, Spain. pp.MS13-E47, ⟨10.1107/S2053273318094482⟩. ⟨hal-02974820⟩

• Article dans une revue

An indoor variance-based localization technique utilizing the UWB estimation of geometrical propagation parameters

Brecht Hanssens, David Plets, Emmeric Tanghe, Claude Oestges, Davy Gaillot, M. Lienard, Taoyong Li, Heidi Steendam, Luc Martens, Wout Joseph

A novel localization framework is presented based on Ultra-Wideband (UWB) channel sounding, employing a triangulation method using the geometrical properties of propagation paths, such as time-delay of arrival, angle of departure, angle of arrival, and their estimated variances. In order to extract…

IEEE Transactions on Antennas and Propagation, 2018, 66 (5), pp.2522-2533. ⟨10.1109/TAP.2018.2810340⟩. ⟨hal-03185605⟩

• Communication dans un congrès

Effective properties of metamaterials using inverse methods

Laetitia Roux, Christian Audoly, Anne-Christine Hladky, Nicole Kessissoglou

Metamaterials can be engineered for noise and vibration control due to their ability to manipulate waves in band gaps and due to local resonance effects. Metamaterials are often characterised in terms of effective parameters derived from an equivalent homogeneous medium. This work compares two…

Annual Conference of the Australian Acoustical Society, ACOUSTICS 2018, Nov 2018, Adelaide, Australia. 377-378, paper 73. ⟨hal-03557503⟩

• Article dans une revue

Unambiguous real-time terahertz frequency metrology using dual 10 GHz femtosecond frequency combs

Oliver Kliebisch, Dirk Heinecke, S Barbieri, Giorgio Santarelli, Hua Li, Carlo Sirtori, Thomas Dekorsy

Terahertz frequency metrology by radio frequency downconversion using femtosecond optical sampling relies on the harmonic factor retrieval between the terahertz frequency and the optical sampling rate. At typical femtosecond laser repetition rates, this imposes an ambiguity for frequency metrology…

Optica, 2018, 5 (11), pp.1431. ⟨10.1364/OPTICA.5.001431⟩. ⟨hal-02403228⟩

• Article dans une revue

Compact Waveguide and Guided Beam Pattern Based on the Whispering-Gallery Mode of a Hollow Pillar in a Phononic Crystal Plate

Weitao Yuan, Jinfeng Zhao, Bernard Bonello, Bahram Djafari-Rouhani, Xiaoqing Zhang, Yongdong Pan, Zheng Zhong

We report on the experimental evidence of the guiding of the lowest order antisymmetric Lamb mode (A0) through a compact waveguide consisting of aligned hollow pillars in between a square-latticed array of solid pillars on a thin slab. We analyze both numerically and experimentally the guiding…

Physical Review Applied, 2018, 10 (3), pp.034010. ⟨10.1103/PhysRevApplied.10.034010⟩. ⟨hal-01905839⟩

• Article dans une revue

Surface acoustic waves in one-dimensional piezoelectric-metallic phononic crystal: Effect of a cap layer

M. Alami, E. H. El Boudouti, Bahram Djafari-Rouhani, Y. El Hassouani, Abdelkrim Talbi

We study the propagation of transverse acoustic waves associated with the surface of a semi-infinite superlattice (SL) composed of piezoelectric-metallic layers and capped with a piezoelectric layer. We present closed-form expressions for localized surface waves, the so-called Bleustein-Gulyaev (BG…

Ultrasonics, 2018, 90, pp.80-97. ⟨10.1016/j.ultras.2018.06.010⟩. ⟨hal-03183475⟩

• Article dans une revue

Thin-film adhesion characterization by Colored Picosecond Acoustics

Arnaud Devos, P. Emery

This paper presents some applications of a recent technique so-called the Colored Picosecond Acoustics (APiC) to the characterization of complex stacks of thin films. The technique is a unique combination of optics and acoustics that implements an acoustic pulse-echo technique at the nanoscale…

Surface and Coatings Technology, 2018, 352, pp.406-410. ⟨10.1016/j.surfcoat.2018.07.097⟩. ⟨hal-03183488⟩

• Article dans une revue

Controllable high-performance cavity resonators: designing localised defect states in a 1D phononic crystal

Abdelkrim Talbi, Mohammed Moutaouekkil, El Houssaine El Boudouti, Omar El Mazria, Bahram Djafari-Rouhani, Philippe Pernod, Olivier Bou Matar

Electronics Letters, 2018, 54 (5), pp.258-258. ⟨10.1049/el.2018.0515⟩. ⟨hal-03183495⟩

• Article dans une revue

Digital complex delta-sigma modulators with highly configurable notches for multi-standard coexistence in wireless transmitters

Razvan-Cristian Marin, Antoine Frappé, Andreas Kaiser

This paper presents a complex delta-sigma modu-lator (CDSM) designed for integration in a digital transmitter chain targeting multi-standard coexistence with nearby receivers. The use of a DSM has the advantage of increased performance in terms of signal-to-noise-ratio in the band of interest.…

IEEE Transactions on Circuits and Systems I: Regular Papers, 2018, 65 (1), pp.343-352. ⟨10.1109/TCSI.2017.2711035⟩. ⟨hal-02314482⟩