Analysis of audio and speech signals for reconstruction and recognition

• Grant number: 12/24789-0
• Support Opportunities: Regular Research Grants
• Start date: July 01, 2013
• End date: December 31, 2015
• Field of knowledge: Engineering - Electrical Engineering - Telecommunications
• Principal Investigator: Miguel Arjona Ramírez
• Grantee: Miguel Arjona Ramírez
• Host Institution: Escola Politécnica (EP). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Associated researchers: Mario Minami

Abstract

This research plan is made up of multiple themes connected to speech analysis, speech coding and audio coding, speech recognition and audio feature recognition and speaker identification. Speech analysis, in addition to its own importance, also provides signal and parameter representations that are necessary for the other themes. Novel types of autoregressive analysi will be explored for coding the short-term spectral envelope of speech signals, mainly, by means of vector quantization techniques and Gaussian mixture models. Several parametric representations will also be applied to speaker identification or audio source separation tasks, contemplating dynamic aspects due to the intrinsic nature of these tasks and applying long-term modeling tools. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

RAMIREZ, MIGUEL ARJONA. Non-Negative Temporal Decomposition Regularization With an Augmented Lagrangian. IEEE SIGNAL PROCESSING LETTERS, v. 23, n. 5, p. 663-667, MAY 2016. (12/24789-0, 15/25512-0)

RAMIREZ, MIGUEL ARJONA. Intra-Predictive Switched Split Vector Quantization of Speech Spectra. IEEE SIGNAL PROCESSING LETTERS, v. 20, n. 8, p. 791-794, AUG 2013. (12/24789-0)

AFFONSO, EMMANUEL T.; RODRIGUEZ, DEMOSTENES Z.; ROSA, RENATA L.; ANDRADE, THIAGO; BRESSAN, GRACA; IEEE. Voice Quality Assessment in Mobile Devices Considering Different Fading Models. 2016 IEEE INTERNATIONAL SYMPOSIUM ON CONSUMER ELECTRONICS - 20TH IEEE ISCE, v. N/A, p. 2-pg., 2016-01-01. (12/24789-0)