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17 results for “Fundamental frequency estimation”

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cs.SDEmpiricalRecentJun 12, 2026

Instantaneous Pitch Estimation via Wave-U-Net-Based Fundamental Waveform Enhancement

Junya Koguchi, Tomoki Koriyama

A Wave-U-Net model is trained to extract a fundamental waveform from input speech signals for accurate and robust instantaneous pitch estimation.

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cs.LGcs.AIcs.CLRecentMay 31, 2026

FreqLite: A Lightweight Frequency-Decomposed Linear Model with Adaptive Reversible Normalization for Robust Long-Term Time-Series Forecasting

Mirza Samad Ahmed Baiga, Syeda Anshrah Gillani

FreqLite introduces an ultra-lightweight, frequency-decomposed linear model that significantly outperforms complex transformers on long-term time-series forecasting while drastically reducing computat…

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cs.CRcs.AIRecentMay 3, 2026

Decompose to Understand, Fuse to Detect: Frequency-Decoupled Anomaly Detection for Encrypted Network Traffic

Xinglin Lian, Chengtai Cao, Ting Zhong, Yong Wang +2 more

The paper proposes FreeUp, a frequency-decoupled framework that improves encrypted network anomaly detection by separately modeling and fusing low- and high-frequency components of traffic data.

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cs.PFcs.ARRecentMay 27, 2026

Range, Not Precision: Block-Floating-Point Half-Precision FFT and SAR Imaging on Apple Silicon

Mohamed Amine Bergach

The paper demonstrates that for FFT-based radar imaging on Apple Silicon, the limiting factor for half-precision (FP16) is dynamic range, not mantissa precision, and proposes a block-floating-point (B…

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cs.CVcs.AIEmpiricalRecentJun 12, 2026

Giving AI a Headache: Acoustic Adversarial Attacks to Computer Vision Applications

Nicole Villavicencio-Garduño, Maksim Ekin Eren, Milo Prisbrey, Ben Migliori +1 more

This paper investigates acoustic attacks on Artificial Intelligence (AI) based computer vision systems using lower frequencies in the audible range, and explores the impact on various image and object…

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cs.LGcs.AIRecentMay 28, 2026

HARP: Hadamard-Preconditioned Adaptive Rotation Processor for Extreme LLM Quantization

Artur Zagitov, Gleb Molodtsov, Aleksandr Beznosikov

HARP introduces a novel, adaptive, learnable orthogonal processor that significantly improves the robustness and accuracy of extreme low-bit LLM quantization compared to fixed methods.

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cs.ROcs.AIeess.SPRecentJun 1, 2026

FW-NKF: Frequency-Weighted Neural Kalman Filters

Adnan Harun Dogan, Berken Utku Demirel, Christian Holz

The paper proposes the Frequency-Weighted Neural Kalman Filter (FW-NKF), a hybrid approach that improves state estimation for robotics by explicitly suppressing frequency-dependent noise components in…

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cs.ARcs.MSRecentJun 3, 2026

GoldenFloat: A Phi-Derived Static-Split Floating-Point Family from GF4 to GF256 with a Lucas-Exact Integer Identity

Dmitrii Vasiliev

This paper presents a hardware-oriented description of GoldenFloat, a static-split floating-point family, and its concrete artefacts.

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eess.SPcs.CRcs.LGRecentApr 14, 2026

Rapid LoRA Aggregation for Wireless Channel Adaptation in Open-Set Radio Frequency Fingerprinting

Mingxi Zhang, Renjie Xie, Jincheng Wang, Guyue Li +1 more

The paper proposes a lightweight, self-adaptive framework using LoRA to efficiently extract and aggregate radio frequency fingerprints for robust open-set authentication in dynamic wireless environmen…

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stat.MLcs.AIcs.LGRecentMay 28, 2026

Improved Distribution Estimation in $\ell_\infty$

Doron Cohen, Aryeh Kontorovich, Yonatan Livshitz

This paper improves the theoretical bounds for estimating discrete probability distributions using the $\ell_\infty$ norm, resolving several open questions in the field.

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cs.LGcs.AIcs.CVRecentMay 28, 2026

Functional MRI Time Series Generation via Wavelet-Based Image Transform and Spectral Flow Matching for Brain Disorder Identification

Hwa Hui Tew, Junn Yong Loo, Fang Yu Leong, Julia K. Lau +5 more

The paper introduces Dual-Spectral Flow Matching (DSFM), a novel generative framework that uses wavelet and cosine transforms to synthesize highly realistic, non-stationary fMRI time series for improv…

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cs.AIcs.CEcs.LGRecentMay 28, 2026

FHRFormer: A Self-Supervised Masked Transformer Framework for Fetal Heart Rate Time-Series Inpainting and Forecasting

Kjersti Engan, Neel Kanwal, Anita Yeconia, Ladislaus Blacy +3 more

The paper introduces FHRFormer, a masked transformer-based autoencoder designed to accurately reconstruct missing and forecast fetal heart rate (FHR) time-series data, thereby enabling robust AI-based…

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eess.SPcs.AIRecentMay 29, 2026

DRIFT: Joint Channel Estimation and Prediction Towards Pilotless 6G Non-Terrestrial Networks

Bruno De Filippo, Carla Amatetti, Alessandro Vanelli-Coralli

The paper proposes DRIFT, a lightweight joint channel estimation and prediction framework, to significantly reduce pilot overhead and boost spectral efficiency in power-constrained LEO Non-Terrestrial…

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cs.CRcs.DScs.LGRecentMay 27, 2026

Privately Estimating Monotone Statistics in Polynomial Time

Gavin Brown, Ephraim Linder, Mahbod Majid, Vikrant Singhal

The paper introduces novel, efficient differentially private algorithms for estimating monotone statistics, significantly improving sample complexity compared to existing methods.

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cs.LGcs.CLeess.SPRecentMay 31, 2026

Beyond Sinusoids: A Morlet Wavelet Framework for Transformer Positional Encoding

Athanasios Zeris

The paper introduces Morlet Positional Encoding (MoPE), a novel wavelet-based positional encoding that models position and locality simultaneously, outperforming standard sinusoidal and RoPE methods.

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cs.ITcs.AIcs.LGRecentMay 30, 2026

Information-Theoretic Lower Bounds for Bit-Constrained Stochastic Optimization via a Reduction to Compressed Gaussian Mean Estimation

Munsik Kim

The paper establishes information-theoretic lower bounds for stochastic optimization using low-bit gradients by reducing the problem to compressed Gaussian mean estimation, yielding sharp bounds on co…

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