An MDCT domain three-point interpolation-based low-complexity frequency estimator

An MDCT domain three-point interpolation-based low-complexity frequency estimator

Abstract Signal frequency estimation is a problem of significance in many applications including audio signal processing. Compressed domain audio frequency estimators that directly use the modified discrete cosine transform (MDCT) coefficients are suitable for low-complexity audio applications. A ne...

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Bibliographic Details
Main Authors: Yujie Dun, Guizhong Liu, Xingsong Hou
Format: Article
Language:English
Published: SpringerOpen 2017-04-01
Series:EURASIP Journal on Audio, Speech, and Music Processing
Subjects:
Frequency estimation
MDCT
Audio
Low complexity
Online Access:http://link.springer.com/article/10.1186/s13636-017-0105-5
Description
Summary:Abstract Signal frequency estimation is a problem of significance in many applications including audio signal processing. Compressed domain audio frequency estimators that directly use the modified discrete cosine transform (MDCT) coefficients are suitable for low-complexity audio applications. A new frequency estimation approach, which can obtain the estimated value from a simple combination of three MDCT coefficients, is proposed herein. It exploits the underlying relation among adjacent MDCT values and provides a general form of this type of estimators. The estimator manifests obvious computational advantages over other MDCT domain estimators and is suitable for high signal-to-noise ratio (SNR) conditions.
ISSN:1687-4722

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