scholarly journals Time‐interleaving design of error‐feedback sigma‐delta modulators with infinite impulse response noise transfer function

2021 ◽  
Author(s):  
Francisco Colodro ◽  
Juana Maria Martinez‐Heredia ◽  
Jose L. Mora ◽  
Antonio Torralba
Keyword(s):  
Transfer Function ◽  
Impulse Response ◽  
Infinite Impulse Response ◽  
Error Feedback ◽  
Time Interleaving ◽  
Sigma Delta ◽  
Sigma Delta Modulators ◽  
Noise Transfer Function

Methods for the transfer function design of multiple narrow-band bandpass sigma–delta modulators

2001 ◽  
Vol 23 (2) ◽  
pp. 85-102
Author(s):  
Mohammed Al-Janabi ◽  
Izzet Kale ◽  
Richard C.S. Morling
Keyword(s):  
Transfer Function ◽  
Narrow Band ◽  
Sigma Delta ◽  
Sigma Delta Modulators ◽  
Function Design ◽  
Transfer Function Design

FPGA-based Implementation of IIR Filter for Real-Time Noise Reduction in Signal

2021 ◽  
Vol 3 (1) ◽  
Author(s):  
Aladin Kapić ◽  
Rijad Sarić ◽  
Slobodan Lubura ◽  
Dejan Jokić
Keyword(s):  
Transfer Function ◽  
Impulse Response ◽  
Discrete Time ◽  
Time Domain ◽  
Digital Filters ◽  
Finite Impulse Response ◽  
Infinite Impulse Response ◽  
Main Role ◽  
Digital Implementation ◽  
Iir Filter

Filtering of unwanted frequencies represents the main aspect of digital signal processing (DSP) in any modern communication system. The main role of the filter is to perform attenuation of certain frequencies and pass only frequencies of interest. In a DSP system, sampled or discrete-time signals are processed by digital filters using different mathematical operations. Digital filters are commonly categorized as Finite Impulse Response (FIR) and Infinite Impulse Response (IIR). This research focuses on the full VHDL implementation of digital second-order lowpass IIR filter for reducing the noisy frequencies on the FPGA board. The initial step is to determine, from continuous time domain function, the transfer function in the complex {s} domain, then map transfer function in complex {z} domain and finally calculate the difference equation in discrete-time domain of the system with adequate coefficients. Prior to the FPGA implementation, the IIR filter is tested in MATLAB using a signal with mixed frequencies and signal with randomly generated noise. The digital implementation is completed by using fixed-point binary vectors and clocked processes.

Infinite-impulse-response models of the head-related transfer function

2004 ◽  
Vol 115 (4) ◽  
pp. 1714-1728 ◽  
Author(s):  
Abhijit Kulkarni ◽  
H. Steven Colburn
Keyword(s):  
Transfer Function ◽  
Impulse Response ◽  
Infinite Impulse Response ◽  
Response Models ◽  
Head Related Transfer Function
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