Publications related to Detection of S1 and S2 locations in phonocardiogram signals using zero frequency filter

Multi-parametric source-filter separation of speech and prosodic voice restoration

In this thesis, methods and models are developed and presented aiming at the estimation, restoration and transformation of the characteristics of human speech. During a first period of the thesis, a concept was developed that allows restoring prosodic voic ...

EPFL2012

Light filter and method for using such filter

Demetri Psaltis, Andreas Vasdekis, Julien Cuennet

The invention concerns a light filter comprising a plate defined by a length along a direction x, a width along a direction y and a height along a direction z said plate including at least one chamber containing Liquid Crystals (LC) molecules and which is ...

2012

Electromechanically induced absorption in a circuit nano-electromechanical system

Tobias Kippenberg, Xiaoqing Zhou, Albert Schliesser

A detailed analysis of electromechanically induced absorption (EMIA) in a circuit nano-electromechanical hybrid system consisting of a superconducting microwave resonator coupled to a nanomechanical beam is presented. By performing two-tone spectroscopy ex ...

Institute of Physics (IoP) and Deutsche Physikalische Gesellschaft2012

Methods and apparatus for estimating a sparse channel

Martin Vetterli, Ali Hormati, Yann Barbotin

Embodiments include a method for sending a selected number of pilots (20) to a sparse channel having a channel impulse response limited in time comprising sending the selected number of the pilots (20). The pilots (20) are equally spaced in the frequency d ...

USPTO2011

Pulse distortion in linear slow light systems: theoretical limits and compensation strategies

Luc Thévenaz

We study analytically pulse distortion in linear slow light systems, and provide some useful limits on these devices. Additionally, we also show that the contributions of phase and amplitude broadening can be de-coupled and quantified. It is observed that ...

SPIE2011

Low-Power and Widely-Tunable Linearized Biquadratic Low-Pass Transconductor-C Filter

Seyed Armin Tajalli, Yusuf Leblebici

A sixth-order low-pass

g_m

-C filter with a very wide tuning range (

f_c

= 100 Hz to 10 MHz) is presented. The wide tuning range has been achieved without using switchable components or programmable building blocks. A single stage folded-cascode transcon ...

Institute of Electrical and Electronics Engineers2011

Fully Passivated AlInN/GaN HEMTs With f(T)/f(MAX) of 205/220 GHz

Nicolas Grandjean, Jean-François Carlin

We report the fabrication and characterization of 30-nm-gate fully passivated AlInN/GaN high-electron mobility transistors (HEMTs) with cutoff frequencies f(T) and f(MAX) simultaneously exceeding 200 GHz at a given bias point. The current gain cutoff frequ ...

2011

Adaptive frequency tracking and application to biomedical signals

Yann Prudat

The main information of a signal resides in its frequency, its amplitude (or its power) and in their temporal evolution. Thus, a great number of methods for instantaneous frequency estimation have been proposed in the literature. Most of these algorithms u ...

EPFL2009

Designing Practical Filters For Sound Field Reconstruction

Martin Vetterli, Mihailo Kolundzija, Christof Faller

Multichannel sound field reproduction techniques, such as Wave Field Synthesis (WFS) and Sound Field Reconstruction (SFR), define loudspeaker filters in the frequency domain. However, in order to use these techniques in practical systems, one needs to conv ...

2009

UMTS-WiFi Switchable Bandpass Filter

Julien Perruisseau-Carrier

In this paper a reconfigurable bandpass filter able to switch between WiFi and UMTS transmit band standards is presented. The filter is designed in such a way that center frequency and bandwidth specifications are precisely met by defining a switchable fil ...

2009

Detection of S1 and S2 locations in phonocardiogram signals using zero frequency filter

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Multi-parametric source-filter separation of speech and prosodic voice restoration

Light filter and method for using such filter

Electromechanically induced absorption in a circuit nano-electromechanical system

Methods and apparatus for estimating a sparse channel

Pulse distortion in linear slow light systems: theoretical limits and compensation strategies

Low-Power and Widely-Tunable Linearized Biquadratic Low-Pass Transconductor-C Filter

Fully Passivated AlInN/GaN HEMTs With f(T)/f(MAX) of 205/220 GHz

Adaptive frequency tracking and application to biomedical signals

Designing Practical Filters For Sound Field Reconstruction

UMTS-WiFi Switchable Bandpass Filter

Light filter and method for using such filter

Low-Power and Widely-Tunable Linearized Biquadratic Low-Pass Transconductor-C Filter

Designing Practical Filters For Sound Field Reconstruction

UMTS-WiFi Switchable Bandpass Filter

Multi-parametric source-filter separation of speech and prosodic voice restoration

Electromechanically induced absorption in a circuit nano-electromechanical system

Pulse distortion in linear slow light systems: theoretical limits and compensation strategies

Fully Passivated AlInN/GaN HEMTs With f(T)/f(MAX) of 205/220 GHz

Methods and apparatus for estimating a sparse channel

Adaptive frequency tracking and application to biomedical signals