Problem statement: Finite Impulse Response (FIR) filters are widely used in various DSP applications. The design of digital FIR filters is a very basic problem in digital signal processing. A FIR filter with multiple operation capability is certainly very useful for any real-time filtering applications. This article presents a multipurpose FIR filter design modeled by the hardware description l...

A low power, wideband wireless transmitter utilizing ∆Σ direct digital modulation of an RF carrier is presented. The transmitter architecture replaces high dynamic range analog circuits with high speed digital circuits and a passive LC bandpass filter, saving power and area compared to conventional IQ modulators for wideband systems. A prototype transmitter IC built in 0.13 μm CMOS demonstrates...

Corrupted digital images are recovered by using median filters. The most frequently occur noise is salt and pepper type impulse noise. As the noise increases it becomes hard to recover the noisy digital image. Different median filters have been suggested to recover it. Size of the window taken in the filter is also the important factor at different level of noises. The performance of standard m...

This paper presents an overview of a design environment for digital filters. We discuss ongoing work as well as previously developed parts of the design flow. The purpose with this design environment is to improve the design efficiency and thereby be able to increase the knowledge in the area of design and implementation of energy efficient digital filters. The design environment includes all d...

This paper presents a kind of design method about the decimation filter design for high performance ADC application. It was implemented and validated by simulation using MATLAB tool and its complete architecture was realized using DSP blockset and Simulink. A two-stage decimation filter architecture which can reduce digital switching noise was also introduced in this design. The FIR low pass fi...

In digital image different kinds of noises exist in an image and a variety of noise reduction techniques are available to perform de-noising. Selection of the de-noising algorithm depends on the types of noise. Gaussian noise, speckle noise, salt & pepper noise, shot noise are types of noises that are present in an image. The principle approach of image de-noising is filtering. Available filter...

AA-LP Anti-aliasing lowpass AC3 Adaptive transform coder 3 ACR Absolute-category rating ADC Analog-to-digital converter ADPCM Adaptive differential pulse-code modulation AEC Acoustic echo cancellation / caneller AIR Acoustic impulse response ALP Adaptive lattice predictor ANC Active noise control or adaptive noise canceller AP Affine projection APC Adaptive predictive coding AR Auto-regressive ...