Automatic carrier pitch estimation for coherent demodulation

Author

Sell, Gregory

Author_Institution

Human Language Technol. Center of Excellence Johns, Hopkins Univ., Baltimore, MD, USA

fYear

2014

fDate

4-9 May 2014

Firstpage

2119

Lastpage

2123

Abstract

This paper proposes a method for estimating carrier frequencies for coherent demodulation using low-frequency amplitude modulation criteria and a frequency-smoothing regularizer. This process combines with coherent modulator estimation to create an iterative approach for simultaneously determining the optimally low-frequency modulator and corresponding carrier for an arbitrary signal. The method is demonstrated with unsupervised semi-blind source separation of speech mixed with several types of tonal interference.

Keywords

amplitude modulation; blind source separation; demodulation; frequency estimation; arbitrary signal; automatic carrier pitch estimation; carrier frequencies estimation; coherent demodulation; coherent modulator estimation; frequency-smoothing regularizer; iterative approach; low-frequency amplitude modulation criteria; low-frequency modulator; speech; tonal interference; unsupervised semiblind source separation; Demodulation; Frequency estimation; Frequency modulation; Interference; Speech; Speech processing; Amplitude modulation; pitch estimation; source separation;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech and Signal Processing (ICASSP), 2014 IEEE International Conference on

Conference_Location

Florence

Type

conf

DOI

10.1109/ICASSP.2014.6853973

Filename

6853973