Concept

Phase noise

Related publications (134)

Reactive Power Imbalances in LC VCOs and their Influence on Phase Noise Mechanisms

Phase-noise mechanisms in cross-coupled LC voltage-controlled oscillators (VCOs) are reviewed based on a physical understanding of reactive power imbalances in the tank and in the active part. These phenomena are proven to be the predominant phase-noise de ...

2011

On identification methods for direct data-driven controller tuning

Alireza Karimi, Klaske van Heusden

In non-iterative data-driven controller tuning, a set of measured input/output data of the plant is used directly to identify the optimal controller that minimizes some control criterion. This approach allows the design of fixed-order controllers, but lead ...

Wiley-Blackwell2011

IMPROVING MICROPHONE ARRAY SPEECH RECOGNITION WITH COCHLEAR IMPLANT-LIKE SPECTRALLY REDUCED SPEECH

Philip Neil Garner, Mohammadjavad Taghizadeh

Cochlear implant-like spectrally reduced speech (SRS) has previously been shown to afford robustness to additive noise. In this paper, it is evaluated in the context of microphone array based automatic speech recognition (ASR). It is compared to and combin ...

Idiap2011

A 4.6-GHz, 15-mW frequency synthesizer CMOS ASIC with milli-hertz frequency resolution for miniature atomic clocks

Pierre-André Farine, Steve Tanner, Yazhou Zhao

In this paper, a 4.6 GHz frequency synthesizer integrated circuit for Cesium-based miniature atomic clocks is presented. Based on a fractional-N phase-locked loop (PLL) with sigma-delta modulator, the chip features a frequency resolution below 10E-3 Hz at ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2011

A MEMS-based 2.4-GHz sub-sampling RF front-end for advanced healthcare applications

Christian Enz, Aravind Prasad Heragu Singaiyengar

This work presents a Bulk Acoustic Wave (BAW) resonator based 2.4-GHz front-end compliant to the Bluetooth LE standard and targeting advanced biomedical applications. A new transceiver architecture is proposed that combines BAW resonators and a sub-samplin ...

2011

Cepstral normalisation and the signal to noise ratio spectrum in automatic speech recognition.

Philip Neil Garner

Cepstral normalisation in automatic speech recognition is investigated in the context of robustness to additive noise. It is argued that such normalisation leads naturally to a speech feature based on signal to noise ratio rather than absolute energy (or p ...

Idiap2011

Cepstral normalisation and the signal to noise ratio spectrum in automatic speech recognition

Philip Neil Garner

Cepstral normalisation in automatic speech recognition is investigated in the context of robustness to additive noise. In this paper, it is argued that such normalisation leads naturally to a speech feature based on signal to noise ratio rather than absolu ...

2011

LC-VCO Design With Dual-Gm, Boosted for RF Oscillation and Attenuated for LF Noise

Adil Koukab

A VCO topology with a high gm at RF and low gm at low frequencies (LF) is presented. A high gm(RF) improves start-up conditions, and a low gm(LF) enables a significant improvement of the phase noise and the power supply rejection. The VCO with a modified p ...

2010

BOOSTED BINARY FEATURES FOR NOISE-ROBUST SPEAKER VERIFICATION

Sébastien Marcel, Anindya Roy

The standard approach to speaker verification is to extract cepstral features from the speech spectrum and model them by generative or discriminative techniques. We propose a novel approach where a set of client-specific binary features carrying maximal di ...

2010

Distributed bearing estimation via matrix completion

Volkan Cevher

We consider bearing estimation of multiple narrow-band plane waves impinging on an array of sensors. For this problem, bearing estimation algorithms such as minimum variance distortionless response (MVDR), multiple signal classification, and maximum likeli ...

2010

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