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Constellation shaping is an energy-efficient strategy involving the transmission of lower-energy signals more frequently than higher-energy signals. Previous work has shown that shaping is particularly effective when used with coded…

信息论 · 计算机科学 2012-10-18 Xingyu Xiang , Matthew C. Valenti

In this paper, we aim to design highly energy efficient end-to-end communication for millimeter wave multiple-input multiple-output systems. This is done by jointly optimizing the digital-to-analog converter (DAC)/analog-to-digital…

信号处理 · 电气工程与系统科学 2020-03-12 Aryan Kaushik , Evangelos Vlachos , Christos Tsinos , John Thompson , Symeon Chatzinotas

In this paper, we propose a dual-encoder ASR architecture for joint modeling of close-talk (CT) and far-talk (FT) speech, in order to combine the advantages of CT and FT devices for better accuracy. The key idea is to add an encoder…

音频与语音处理 · 电气工程与系统科学 2021-09-21 Felix Weninger , Marco Gaudesi , Ralf Leibold , Roberto Gemello , Puming Zhan

High-frequency acoustic wave transducers, vibrating at gigahertz (GHz), favored for their compact size, are not only dominating the front-end of mobile handsets but are also expanding into various interdisciplinary fields, including quantum…

信号处理 · 电气工程与系统科学 2026-04-28 Fangsheng Qian , Shuhan Chen , Wei Wei , Jiashuai Xu , Kai Yang , Junyan Zheng , Zijun Ren , Xingyu Liu , Yansong Yang

The fact that VCO-ADCs produce noise-shaped quantization noise suggests that a link between frequency modulation and Sigma-Delta modulation should exist. The connection between a VCO-ADC and a first-order Sigma-Delta modulator has been…

系统与控制 · 电气工程与系统科学 2024-06-03 Victor Medina , Pieter Rombouts , Luis Hernandez

Neural audio codecs (NACs) have made significant advancements in recent years and are rapidly being adopted in many audio processing pipelines. However, they can introduce audio distortions which degrade speaker verification (SV)…

声音 · 计算机科学 2025-09-04 Nirmalya Mallick Thakur , Jia Qi Yip , Eng Siong Chng

Topological phases of matter have been extensively studied for their intriguing bulk and edge properties. Recently, higher-order topological insulators with boundary states that are two or more dimensions lower than the bulk states, have…

介观与纳米尺度物理 · 物理学 2020-01-08 Xiujuan Zhang , Bi-Ye Xie , Hong-Fei Wang , Xiangyuan Xu , Yuan Tian , Jian-Hua Jiang , Ming-Hui Lu , Yan-Feng Chen

Vibration and dissipation in vibro-acoustic systems can be assessed using frequency response analysis. Evaluating a frequency sweep on a full-order model can be very costly, so model order reduction methods are employed to compute…

数值分析 · 数学 2022-10-24 Quirin Aumann , Steffen W. R. Werner

Dual-functional radar-communication (DFRC) signal design has received much attention lately. We consider the scenario of one-bit massive multi-input multi-output (MIMO) wherein one-bit DACs are employed for the sake of saving hardware…

信号处理 · 电气工程与系统科学 2025-01-28 Wai-Yiu Keung , Hei Victor Cheng , Wing-Kin Ma

Flexible Electronics (FE) offer distinct advantages, including mechanical flexibility and low process temperatures, enabling extremely low-cost production. To address the demands of applications such as smart sensors and wearables, flexible…

硬件体系结构 · 计算机科学 2024-12-10 Paula Carolina Lozano Duarte , Florentia Afentaki , Georgios Zervakis , Mehdi B. Tahoori

Objective: This work aims to reduce the acoustic noise level of transcranial magnetic stimulation (TMS) coils. TMS requires high currents (several thousand amperes) to be pulsed through the coil, which generates a loud acoustic impulse…

医学物理 · 物理学 2020-07-03 Lari M. Koponen , Stefan M. Goetz , Angel V. Peterchev

This article concerns the development of the Vector Field Orientation - Active Disturbance Rejection (VFO-ADR) cascaded path-following controller for underactuated vehicles moving in a 3-dimensional space. The proposed concept of a cascaded…

系统与控制 · 电气工程与系统科学 2020-08-04 Krzysztof Łakomy , Maciej Marcin Michałek

Discrete audio tokenizers are fundamental to empowering large language models with native audio processing and generation capabilities. Despite recent progress, existing approaches often rely on pretrained encoders, semantic distillation,…

The performance and scalability of semiconductor quantum-dot (QD) qubits are limited by electrostatic drift and charge noise that shift operating points and destabilize qubit parameters. As systems expand to large one- and two-dimensional…

Sound zone control (SZC) implemented using static optimal filters is significantly affected by various perturbations in the acoustic environment, an important one being the fluctuation in the speed of sound, which is in turn influenced by…

音频与语音处理 · 电气工程与系统科学 2024-10-11 Sankha Subhra Bhattacharjee , Jesper Rindom Jensen , Mads Græsbøll Christensen

Turbulent reacting flows confined to ducts are plagued by thermoacoustic instability, a state in which a positive feedback between flow, flame and acoustic perturbations leads to the emergence of catastrophically high-amplitude oscillatory…

A new tuning rule is introduced for linear active disturbance rejection control (ADRC), which results in similar closed-loop dynamics as the commonly employed bandwidth parameterization design, but with lower feedback gains. In this manner…

系统与控制 · 电气工程与系统科学 2022-01-11 Gernot Herbst , Arne-Jens Hempel , Thomas Göhrt , Stefan Streif

Using micromagnetic simulations, we study the interplay between strongly voltage-controlled magnetic anisotropy (VCMA), $\Delta K = \pm$200 kJ/m$^3$, and gate width, $w=$ 10--400 nm, in voltage-gated W/CoFeB/MgO based nano-constriction spin…

介观与纳米尺度物理 · 物理学 2023-08-16 Victor H. González , Roman Khymyn , Himanshu Fulara , Ahmad A. Awad , Johan Åkerman

This paper presents a novel approach utilizing a scalable neural decoder application-specific integrated circuit (ASIC) based on metal oxide memristors in a 180nm CMOS technology. The ASIC architecture employs in-memory computing with…

Absorbing airborne noise at frequencies below 300 Hz is a particularly vexing problem due to the absence of natural sound absorbing materials at these frequencies. The prevailing solution for low-frequency sound absorption is the use of…

应用物理 · 物理学 2020-01-15 Xinxin Guo , Romain Fleury , Hervé Lissek