Ivan Lopez Espejo

Publikationer

Publikationer pr. år 2019 2019 2020 2021 2022 2023 2024

• 8 Konferenceartikel i proceeding
• 6 Tidsskriftartikel
• 2 Poster
• 1 Konferenceabstrakt til konference
• 3 Mere
  • 1 Konferenceabstrakt i tidsskrift
  • 1 Review (oversigtsartikel)
  • 1 Patent

Publikationer pr. år

Publikationer pr. år

Søgeresultater

• 2024

  Fearless Steps APOLLO: Identifying Conversational Mission-Critical Topics in NASA Apollo Missions Audio Based on Keyword Spotting

  Joglekar, A., Espejo, I. L. & Hansen, J. H. L., 2024, (Accepteret/In press).

  Publikation: Konferencebidrag uden forlag/tidsskrift › Konferenceabstrakt til konference › Forskning › peer review

  Fil
  48 Downloads (Pure)

• Utilization of acoustic signals with generative Gaussian and autoencoder modeling for condition-based maintenance of injection moulds

  Rønsch, G. Ø., Espejo, I. L., Michelsanti, D., Xie, Y., Popovski, P. & Tan, Z-H., 2024, I: International Journal of Computer Integrated Manufacturing. 37, 4, s. 438-453 16 s.

  Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › peer review

  • Gaussians 100%
  • Acoustic Signal 100%
  • Autoencoder 100%
  • Injection Molding 100%
  • Test Time 66%
  1 Citationer (Scopus)
• 2023

  Fearless Steps APOLLO: Challenges in keyword spotting and topic detection for naturalistic audio streams

  Joglekar, A., Espejo, I. L. & Hansen, J. H. L., mar. 2023, I: The Journal of the Acoustical Society of America. 153, Supplement 3, A173.

  Publikation: Bidrag til tidsskrift › Konferenceabstrakt i tidsskrift › Forskning › peer review

  • Topic Detection 100%
  • Naturalistic Audio 100%
  • Automatic Speech Recognition 100%
  • Audio Stream 100%
  • NASA 50%

• Filterbank Learning for Noise-Robust Small-Footprint Keyword Spotting

  Espejo, I. L., Shekar, R. C. M. C., Tan, Z-H., Jensen, J. & Hansen, J., maj 2023, ICASSP 2023 - 2023 IEEE International Conference on Acoustics, Speech and Signal Processing, Proceedings. IEEE, 5 s. 10095436. (International Conference on Acoustics Speech and Signal Processing (ICASSP)).

  Publikation: Bidrag til bog/antologi/rapport/konference proceeding › Konferenceartikel i proceeding › Forskning › peer review

  • Small Footprint 100%
  • Noise-robust 100%
  • Keyword Spotting 100%
  • Filterbank Learning 100%
  • Filterbank 100%

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

  Espejo, I. L., Prieto-Calero, S., Ortega, A. & Lleida, E., 23 okt. 2023, Proceedings of the 2023 IEEE 33rd International Workshop on Machine Learning for Signal Processing, MLSP 2023. Comminiello, D. & Scarpiniti, M. (red.). IEEE, 6 s. 10285923. (IEEE Workshop on Machine Learning for Signal Processing).

  Publikation: Bidrag til bog/antologi/rapport/konference proceeding › Konferenceartikel i proceeding › Forskning › peer review

  • Speaker Verification 100%
  • Transfer Vector 100%
  • Embedding Space 33%
  • Verification System 33%
  • Equal Error Rate 33%

• On the Deficiency of Intelligibility Metrics as Proxies for Subjective Intelligibility

  Espejo, I. L., Edraki, A., Chan, W-Y., Tan, Z-H. & Jensen, J., maj 2023, I: Speech Communication. 150, s. 9-22 14 s.

  Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › peer review

  Åben adgang

  Fil

  • Deep Neural Network 100%
  • Speech Enhancement 100%
  • Neural Network 66%
  • Training Model 33%
  • Convolutional Neural Network 33%
  4 Citationer (Scopus)

  40 Downloads (Pure)
• 2022

  An Experimental Study on Light Speech Features for Small-Footprint Keyword Spotting

  Espejo, I. L., Tan, Z-H. & Jensen, J., 2022, IberSPEECH 2022.

  Publikation: Bidrag til bog/antologi/rapport/konference proceeding › Konferenceartikel i proceeding › Forskning › peer review

  Åben adgang

  Fil

  • Energy Consumption 100%
  • Feature Matrix 60%
  • Quantization 50%
  • Convolutional Neural Network 50%
  • Experimental Result 50%
  64 Downloads (Pure)

• Deep Spoken Keyword Spotting: An Overview

  Espejo, I. L., Tan, Z-H., Hansen, J. & Jensen, J., jan. 2022, I: IEEE Access. 10, s. 4169-4199 31 s.

  Publikation: Bidrag til tidsskrift › Review (oversigtsartikel) › peer review

  Åben adgang

  Fil

  • Evaluation Metric 100%
  • Speech Recognition 100%
  • Computational Complexity 100%
  • Voice Assistant 100%
  • Research Topic 100%
  54 Citationer (Scopus)

  264 Downloads (Pure)

• Fusion of Classical Digital Signal Processing and Deep Learning Methods (FTCAPPS)

  Gomez, A., Sánchez, V. E., Peinado, A., Martín-Doñas, J. M., Gómez-Alanís, A., Villegas-Morcillo, A., Rosello, E., Chica, M., Garcia, C. & Espejo, I. L., nov. 2022, Proc. IberSPEECH 2022. s. 237-240

  Publikation: Bidrag til bog/antologi/rapport/konference proceeding › Konferenceartikel i proceeding › Forskning › peer review

  Åben adgang

  Fil

  • Digital Signal Processing 100%
  • Deep Learning 100%
  • Signal Processing 100%
  • Neural Network 100%
  • Processing Paradigm 33%
  54 Downloads (Pure)

• Reduced-Resolution Speech Features for Small-Footprint Keyword Spotting

  Espejo, I. L., Tan, Z-H. & Jensen, J., 2022.

  Publikation: Konferencebidrag uden forlag/tidsskrift › Poster › Formidling

  Åben adgang

  Fil
  24 Downloads (Pure)

• Shouted and Whispered Speech Compensation for Speaker Verification Systems

  Prieto-Calero, S., Ortega, A., Espejo, I. L. & Lleida, E., jul. 2022, I: Digital Signal Processing: A Review Journal. 127, 103536.

  Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › peer review

  • Whispered Speech 100%
  • Score Calibration 100%
  • Verification System 100%
  • Speaker Verification 100%
  • Mode Detection 66%
  2 Citationer (Scopus)
• 2021

  A Novel Loss Function and Training Strategy for Noise-Robust Keyword Spotting

  Espejo, I. L., Tan, Z-H. & Jensen, J., jul. 2021, I: IEEE/ACM Transactions on Audio, Speech, and Language Processing. 29, s. 2254 - 2266 13 s., 9465680.

  Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › peer review

  Åben adgang

  Fil

  • Noisy Condition 100%
  • Linear Classifier 100%
  • Computational Complexity 100%
  • Experimental Result 100%
  • Performance Improvement 100%
  15 Citationer (Scopus)

  146 Downloads (Pure)

• Dual-channel eKF-RTF Framework for Speech Enhancement with DNN-based Speech Presence Estimation

  Martín-Doñas, J. M., Peinado, A., Espejo, I. L. & Gomez, A., mar. 2021, IberSPEECH 2021. ISCA, s. 31-35 5 s.

  Publikation: Bidrag til bog/antologi/rapport/konference proceeding › Konferenceartikel i proceeding › Forskning › peer review

  • Speech Enhancement 100%
  • Deep Neural Network 100%
  • Experimental Result 33%
  • Speech Signal 33%
  • Beamforming 33%

• Exploring Filterbank Learning for Keyword Spotting

  Espejo, I. L., Tan, Z-H. & Jensen, J., 2021, 28th European Signal Processing Conference (EUSIPCO). IEEE, s. 331-335 5 s. 9287772. (Proceedings of the European Signal Processing Conference).

  Publikation: Bidrag til bog/antologi/rapport/konference proceeding › Konferenceartikel i proceeding › Forskning › peer review

  • Filterbank 100%
  • Filterbank Learning 100%
  • Spectral Domain 50%
  • Deep Residual Neural Network 50%
  • Gammachirp Filterbank 16%
  14 Citationer (Scopus)
• 2020

  Authenticating a User

  Lopez-Espejo, I., Prieto-Calero, S., Iriarte-Ruiz, A., Roncal-Redín, D., Sánchez-Yoldi, M. A. & Azanza-Ladrón, E., 2020, IPC nr. G10L 17/22 2013.01 - G10L 17/04 2013.01 - G10L 25/60 2013.01 - G10L 17/12 2013.01 - G10L 17/08 2013.01, Patentnr. WO 2020/007495 A1

  Publikation: Patent

  Åben adgang

• Improved External Speaker-Robust Keyword Spotting for Hearing Assistive Devices

  Lopez-Espejo, I., Tan, Z-H. & Jensen, J., apr. 2020, I: IEEE/ACM Transactions on Audio, Speech, and Language Processing. 28, s. 1233-1247 15 s., 9054977.

  Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › peer review

  Åben adgang

  Fil

  • Robust Keyword Spotting 100%
  • Constant-Q Transform 33%
  • Time Fourier Transform 33%
  • Multi-task Deep Learning 16%
  13 Citationer (Scopus)

  137 Downloads (Pure)

• Shouted Speech Compensation for Speaker Verification Robust to Vocal Effort Conditions

  Prieto-Calero, S., Ortega, A., Espejo, I. L. & Lleida, E., 2020, Interspeech 2020. s. 1511-1515 5 s. (Proceedings of the International Conference on Spoken Language Processing).

  Publikation: Bidrag til bog/antologi/rapport/konference proceeding › Konferenceartikel i proceeding › Forskning › peer review

  Åben adgang

  Fil

  • Speaker Verification 100%
  • Shouted Speech 100%
  • Equal Error Rate 100%
  • Gaussian Distribution 100%
  • Linear Compensation 33%
  2 Citationer (Scopus)

  52 Downloads (Pure)
• 2019

  Dual-Channel Speech Enhancement Based on Extended Kalman Filter Relative Transfer Function Estimation

  Martín-Doñas, J. M., Peinado, A., Lopez-Espejo, I. & Gomez, A., 2019, I: Applied Sciences. 9, 12, s. 1-21 21 s.

  Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › peer review

  Åben adgang

  Fil

  • Speech Enhancement 100%
  • Transfer Function 100%
  • Extended Kalman Filter 100%
  • Relative Transfer Function Estimation 100%
  • Probability Estimator 50%
  5 Citationer (Scopus)

  51 Downloads (Pure)

• Keyword Spotting for Hearing Assistive Devices Robust to External Speakers

  Lopez-Espejo, I., Tan, Z-H. & Jensen, J., sep. 2019, Interspeech 2019. ISCA, s. 3223-3227 5 s. (Proceedings of the International Conference on Spoken Language Processing).

  Publikation: Bidrag til bog/antologi/rapport/konference proceeding › Konferenceartikel i proceeding › Forskning › peer review

  Åben adgang

  Fil

  • Learning Scheme 100%
  • Deep Residual Network 75%
  • Multi-task Learning 37%
  • Google Speech 37%
  • Speaker Change Detection 37%
  6 Citationer (Scopus)

  53 Downloads (Pure)

• Low-Resource Keyword Spotting for Hearing Assistive Devices

  Lopez-Espejo, I., Tan, Z-H. & Jensen, J., 2019.

  Publikation: Konferencebidrag uden forlag/tidsskrift › Poster › Formidling

  Fil
  50 Downloads (Pure)