Significance of initial interpolation in band-limited signal interpolation
نویسندگان
چکیده
In this correspondence, we present an improved version of the Papoulis algorithm for band-limited signal interpolation. This algorithm uses the concept of initial interpolation. The justification for initial interpolation is developed only through experimental studies. We show that the performance of the interpolation scheme depends on the number and distribution of the known data samples.
منابع مشابه
Sampling Rate Conversion in the Discrete Linear Canonical Transform Domain
Sampling rate conversion (SRC) is one of important issues in modern sampling theory. It can be realized by up-sampling, filtering, and down-sampling operations, which need large complexity. Although some efficient algorithms have been presented to do the sampling rate conversion, they all need to compute the N-point original signal to obtain the up-sampling or the down-sampling signal in the tim...
متن کاملH-infinity Design of Periodically Nonuniform Interpolation and Decimation for Non-Band-Limited Signals
In this paper, we consider signal interpolation of discrete-time signals which are decimated nonuniformly. A conventional interpolation method is based on the sampling theorem, and the resulting system consists of an ideal filter with complex-valued coefficients. While the conventional method assumes band limitation of signals, we propose a new method by sampled-data H ∞ optimization. By this m...
متن کاملVTLN in the MFCC Domain: Band-Limited versus Local Interpolation
We propose a new easy-to-implement method to compute a Linear Transform (LT) to perform Vocal Tract Length Normalization (VTLN) on truncatedMel Frequency Cepstral Coefficients (MFCCs) normally used in distributed speech recognition. The method is based on a Local Interpolation which is independent of the Mel filter design. Local Interpolation (LILT) VTLN is theoretically and experimentally comp...
متن کاملSampling Theorems for Non Bandlimited Signals: Theoretical Impact and Practical Applications
In recent years many of the results for band limited sampling have been extended to the case of non bandlimited signals. These recent extensions have been found to be useful in digital signal processing applications such as image interpolation, equalization of communication channels, and in multiresolution computation. In this lecture we give a brief overview of some of these ideas.
متن کاملReconstruction from Non-uniform Samples
Exact reconstruction of a band-limited signal from its non-uniform samples involves the use of Lagrange interpolation, which is impractical to implement as it is computationally difficult. This thesis develops approximate reconstruction methods based on time-warping to obtain reconstruction of band-limited signals from non-uniform samples. A review of non-uniform sampling theorems is presented ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- IEEE Trans. Acoustics, Speech, and Signal Processing
دوره 37 شماره
صفحات -
تاریخ انتشار 1989