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

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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.

Original languageEnglish
Article number8
JournalEurasip Journal on Audio, Speech, and Music Processing
Volume2017
Issue number1
DOIs
StatePublished - 1 Dec 2017

Keywords

  • Audio
  • Frequency estimation
  • Low complexity
  • MDCT

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