Search Results for author: Iván López-Espejo

Found 8 papers, 0 papers with code

On Speech Pre-emphasis as a Simple and Inexpensive Method to Boost Speech Enhancement

no code implementations17 Jan 2024 Iván López-Espejo, Aditya Joglekar, Antonio M. Peinado, Jesper Jensen

Pre-emphasis filtering, compensating for the natural energy decay of speech at higher frequencies, has been considered as a common pre-processing step in a number of speech processing tasks over the years.

Automatic Speech Recognition Speech Enhancement +2

Improved Vocal Effort Transfer Vector Estimation for Vocal Effort-Robust Speaker Verification

no code implementations3 May 2023 Iván López-Espejo, Santi Prieto, Alfonso Ortega, Eduardo Lleida

Despite the maturity of modern speaker verification technology, its performance still significantly degrades when facing non-neutrally-phonated (e. g., shouted and whispered) speech.

Speaker Verification

Filterbank Learning for Noise-Robust Small-Footprint Keyword Spotting

no code implementations19 Nov 2022 Iván López-Espejo, Ram C. M. C. Shekar, Zheng-Hua Tan, Jesper Jensen, John H. L. Hansen

In the context of keyword spotting (KWS), the replacement of handcrafted speech features by learnable features has not yielded superior KWS performance.

Small-Footprint Keyword Spotting

Deep Spoken Keyword Spotting: An Overview

no code implementations20 Nov 2021 Iván López-Espejo, Zheng-Hua Tan, John Hansen, Jesper Jensen

Spoken keyword spotting (KWS) deals with the identification of keywords in audio streams and has become a fast-growing technology thanks to the paradigm shift introduced by deep learning a few years ago.

Automatic Speech Recognition Automatic Speech Recognition (ASR) +2

Shouted Speech Compensation for Speaker Verification Robust to Vocal Effort Conditions

no code implementations6 Aug 2020 Santi Prieto, Alfonso Ortega, Iván López-Espejo, Eduardo Lleida

These compensation techniques are borrowed from the area of robustness for automatic speech recognition and, in this work, we apply them to compensate the mismatch between shouted and normal conditions in speaker verification.

Automatic Speech Recognition Automatic Speech Recognition (ASR) +2

Exploring Filterbank Learning for Keyword Spotting

no code implementations30 May 2020 Iván López-Espejo, Zheng-Hua Tan, Jesper Jensen

Despite their great performance over the years, handcrafted speech features are not necessarily optimal for any particular speech application.

Keyword Spotting

End-to-End Deep Residual Learning with Dilated Convolutions for Myocardial Infarction Detection and Localization

no code implementations15 Sep 2019 Iván López-Espejo

In this report, I investigate the use of end-to-end deep residual learning with dilated convolutions for myocardial infarction (MI) detection and localization from electrocardiogram (ECG) signals.

Myocardial infarction detection

Keyword Spotting for Hearing Assistive Devices Robust to External Speakers

no code implementations22 Jun 2019 Iván López-Espejo, Zheng-Hua Tan, Jesper Jensen

Our results show that this multi-task deep residual network is able to achieve a KWS accuracy relative improvement of around 32% with respect to a system that does not deal with external speakers.

Keyword Spotting Multi-Task Learning

Cannot find the paper you are looking for? You can Submit a new open access paper.