Time Delay Estimation Using Windowed Differential agnitude of Cross Correlation and Its Hilbert Transform
نویسندگان
چکیده
منابع مشابه
Time Delay Estimation via Multichannel Cross-correlation
Time delay estimation (TDE) in a reverberant acoustical environment is a very challenging and difficult problem. This paper tackles the problem by exploiting the redundant information provided by multiple microphone sensors. To do so, the multichannel crosscorrelation coefficient (MCCC) is re-derived, in a new way, to connect it to the well-known linear interpolation technique. Some interesting...
متن کاملTime Delay Estimation Using Spatial Correlation Techniques
ABSTRACT Recently there has been an increasing interest in the use of the TDE technique to locate and track acoustic sources in a conferencing environment. Typically, the delay estimate is obtained as the time-lag that maximizes the cross-correlation function between the filtered versions of two received signals. This so-called generalized cross-correlation technique, based on the measurements ...
متن کاملWindowed linear canonical transform and its applications
In this paper, we generalize the windowed Fourier transform to the windowed linear canonical transform by substituting the Fourier transform kernel with the linear canonical transform kernel in the windowed Fourier transform definition. It offers local contents, enjoys high resolution, and eliminates cross terms. Some useful properties of the windowed linear canonical transform are derived. Tho...
متن کاملSubsample Time delay estimation using fractional Fourier transform
The need for subsample time delay estimation (TDE) between two signals arises quite often in many areas such as radar; sonar etc. In this paper, the use of fractional Fourier transform (FRFT) for subsample TDE is proposed. The proposed estimator uses the magnitude of the FRFT of the signals, although the phase angle of it can also be exploited for the estimation purpose. To validate the propose...
متن کاملSpatial Correlation and Time Delay Estimation
To find the position of an acoustic source in a room, a set of relative delays among different microphone pairs has to be determined. The generalized cross-correlation method is the most popular to do so and is well explained in a landmark paper by Knapp and Carter. In this technical memorandum, we show how we can take advantage of the redundancy when more than two microphones are available. It...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Procedia Engineering
سال: 2012
ISSN: 1877-7058
DOI: 10.1016/j.proeng.2012.01.257