Search Results - "Sadjadi, Seyed Omid"

Unsupervised Speech Activity Detection Using Voicing Measures and Perceptual Spectral Flux by Sadjadi, S. O., Hansen, J. H. L.

“…Effective speech activity detection (SAD) is a necessary first step for robust speech applications. In this letter, we propose a robust and unsupervised SAD…”
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Two decades of speaker recognition evaluation at the national institute of standards and technology by Greenberg, Craig S., Mason, Lisa P., Sadjadi, Seyed Omid, Reynolds, Douglas A.

“…•NIST has conducted speaker recognition technology evaluations for over 20 years.•NIST SREs have driven text-independent speaker recognition technology…”
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Simultaneous suppression of noise and reverberation in cochlear implants using a ratio masking strategy by Hazrati, Oldooz, Sadjadi, Seyed Omid, Loizou, Philipos C, Hansen, John H L

“…Cochlear implant (CI) recipients' ability to identify words is reduced in noisy or reverberant environments. The speech identification task for CI users…”
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Nearest neighbor discriminant analysis for language recognition by Sadjadi, Seyed Omid, Pelecanos, Jason W., Ganapathy, Sriram

“…Many state-of-the-art i-vector based voice biometric systems use linear discriminant analysis (LDA) as a post-processing stage to increase the computational…”
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Mean Hilbert envelope coefficients (MHEC) for robust speaker and language identification by Sadjadi, Seyed Omid, Hansen, John H.L.

“…•Auditory robust feature for speaker and language identification (SID/LID).•Employs Hilbert envelope of Gammatone filterbank outputs.•Excellent performance in…”
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Leveraging sensor information from portable devices towards automatic driving maneuver recognition by Sathyanarayana, Amardeep, Sadjadi, Seyed Omid, Hansen, John H.L.

“…With the proliferation of smart portable devices, more people have started using them within the vehicular environment while driving. Although these smart…”
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Blind Spectral Weighting for Robust Speaker Identification under Reverberation Mismatch by Sadjadi, Seyed Omid, Hansen, John H. L.

“…Room reverberation poses various deleterious effects on performance of automatic speech systems. Speaker identification (SID) performance, in particular,…”
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Who shall I say is calling? Validation of a caller recognition procedure in Bornean flanged male orangutan (Pongo pygmaeus wurmbii) long calls by Spillmann, Brigitte, van Schaik, Carel P., Setia, Tatang M., Sadjadi, Seyed Omid

“…Acoustic individual discrimination has been demonstrated for a wide range of animal taxa. However, there has been far less scientific effort to demonstrate the…”
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Speaker age estimation on conversational telephone speech using senone posterior based i-vectors by Sadjadi, Seyed Omid, Ganapathy, Sriram, Pelecanos, Jason W.

“…Automatic age estimation from speech has a variety of applications including natural human-computer interaction, targeted advertising, customer-agent pairing…”
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CRSS systems for 2012 NIST Speaker Recognition Evaluation by Hasan, Taufiq, Sadjadi, Seyed Omid, Gang Liu, Shokouhi, Navid, Boril, Hynek, Hansen, John H. L.

“…This paper describes the systems developed by the Center for Robust Speech Systems (CRSS), for the 2012 National Institute of Standards and Technology (NIST)…”
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NIST SRE CTS Superset: A large-scale dataset for telephony speaker recognition by Sadjadi, Seyed Omid

“…This document provides a brief description of the National Institute of Standards and Technology (NIST) speaker recognition evaluation (SRE) conversational…”
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Speaker verification based processing for robust ASR in co-channel speech scenarios by Sadjadi, Seyed Omid, Heck, Larry P.

“…Co-channel speech, which occurs in monaural audio recordings of two or more overlapping talkers, poses a great challenge for automatic speech applications…”
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Robust front-end processing for speaker identification over extremely degraded communication channels by Sadjadi, Seyed Omid, Hansen, John H. L.

“…Effective front-end processing, which often involves feature extraction and speech activity detection (SAD), is essential for robustness in speech systems. In…”
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Overlapped-speech detection with applications to driver assessment for in-vehicle active safety systems by Shokouhi, Navid, Sathyanarayana, Amardeep, Sadjadi, Seyed Omid, Hansen, John H. L.

“…In this study we propose a system for overlapped-speech detection. Spectral harmonicity and envelope features are extracted to represent overlapped and…”
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Nearest neighbor based i-vector normalization for robust speaker recognition under unseen channel conditions by Weizhong Zhu, Sadjadi, Seyed Omid, Pelecanos, Jason W.

“…Many state-of-the-art speaker recognition engines use i-vectors to represent variable-length acoustic signals in a fixed low-dimensional total variability…”
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Robust and efficient environment detection for adaptive speech enhancement in cochlear implants by Hazrati, Oldooz, Sadjadi, Seyed Omid, Hansen, John H. L.

“…Cochlear implant (CI) recipients require alternative signal processing for speech enhancement, since the quantities needed for intelligibility and quality…”
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Hilbert envelope based features for robust speaker identification under reverberant mismatched conditions by Sadjadi, Seyed Omid, Hansen, John H. L.

“…It is well known that MFCC based speaker identification (SID) systems easily break down under mismatched training and test conditions. One such mismatch occurs…”
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VoxWatch: An open-set speaker recognition benchmark on VoxCeleb by Peri, Raghuveer, Sadjadi, Seyed Omid, Garcia-Romero, Daniel

“…Despite its broad practical applications such as in fraud prevention, open-set speaker identification (OSI) has received less attention in the speaker…”
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Robust front-end processing for speech applications under acoustic mismatch conditions by Sadjadi, Seyed Omid

“…In recent years, there has been significant interest for the integration of speech technology within a variety of mobile and online services that provide…”
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Belt Up: Investigating the impact of in-vehicular conversation on driving performance by Sathyanarayana, Amardeep, Shokouhi, Navid, Sadjadi, Seyed Omid, Hansen, John H. L.

“…In-vehicle conversations are typical when there is more than one person in the car. Although many conversations are beneficial in keeping the driver alert and…”
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