A Fine-Resolution Frequency Estimator in the Odd-DFT Domain
发布时间：2025-04-30
点击次数：
- 发布时间：
- 2025-04-30
- 论文名称：
- A Fine-Resolution Frequency Estimator in the Odd-DFT Domain
- 发表刊物：
- IEEE Signal Processing Letters
- 摘要：
- Although many frequency estimation methods are available, few are designed for high-quality speech and audio processing systems, which typically use the modified discrete cosine transform (MDCT) as their analysis filter bank. In this letter, we propose a low complexity frequency estimator that is suitable for MDCT-based systems and that operates in the odd-DFT domain. Taking a complex exponential in noise as the input and deriving the analytical expression of its odd-DFT coefficient, we obtain an interpolated odd-DFT-based frequency estimator. Experiments show that the proposed estimator outperforms all other reported odd-DFT/MDCT domain estimators and has precision that is similar to that of representative DFT domain frequency estimators. The overhead for incorporating this estimator into a speech and audio processing system is small due to the simple odd-DFT to MDCT conversion. The corresponding magnitude and phase estimators are also proposed in this letter.
- 合写作者：
- Y. Dun，G. Liu
- 卷号：
- 2015，22（12）
- 页面范围：
- 2489-2493
- 是否译文：
- 否
- 发表时间：
- 2015-12-01