An Analog Vlsi Circuit Implementing an Orthogonal Continuous Wavelet Transform

نویسنده

  • Dongwei Chen
چکیده

We have developed the theory and analog hardware implement-ation for a Cont.inuous Wavelet Transform (CWT). This novel circuit performs an orthogonal decomposition of temporal signals, such as speech, in a frequency range of IOHz to 20KHz. This multiresolution processor expands the Laguerre structure originally developed by Lee [4].

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Analog VLSI Processor Implementing the Continuous Wavelet Transform

Abstract—We present an integrated analog processor for real-time wavelet decomposition and reconstruction of continuous temporal signals covering the audio frequency range. The processor performs complex harmonic modulation and Gaussian lowpass filtering in 16 parallel, identical channels, each channel clocked at a different rate, to produce a multiresolution mapping on a logarithmic frequency ...

متن کامل

Implementing Complex Wavelet Transform in Analog Circuit and Singular Value Decomposition Algorithm

A new method for implementing complex wavelet transform (CWT) based on analog sampled-data circuit and singular value decomposition (SVD) algorithm is presented. To begin with, the real and imaginary parts functions of the complex wavelet base are approximated by using SVD algorithm. As the main advantage of this approximation approach is its computational simplicity and general applicability. ...

متن کامل

Analog wavelet transform employing dynamic translinear circuits for cardiac signal characterization

An analog QRS complex detection circuit, for pacemaker applications, based on the Wavelet Transform (WT) is presented. The system detects the wavelet modulus maxima of the QRS complex. It consists of a wavelet transform filter, an absolute value circuit, a peak detector and a comparator. In order to achieve the low-power requirement in pacemakers, we propose a new method for implementing the WT...

متن کامل

A VLSI Architecture for the Discrete Wavelet Transform

This paper gives a summary of the wavelet transform for both continuous and time discrete signals. An algorithm for an effective computation of the DWT, namely the Mallat Algorithm, is described in greater detail. Its implementation with FIR filters can be optimized by applying the lifting scheme. This can extremely reduce the computational complexity. Some possible architectures that map the M...

متن کامل

First Derivative Gaussian Wavelet Function Employing Dynamic Translinear Circuits for Cardiac Signal Characterization

An analog QRS complex detection circuit, for pacemaker applications, based on the Wavelet Transform (WT) is presented here. The system detects the modulus maxima of the QRS complex. It consists of a wavelet transform fi lter, an absolute value circuit, a peak detector and a comparator. In order to achieve the low -power requirement in pacemakers, we propose a new method for implementing the WT ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 1998