With these issues in mind, we designed an audio-controlled digital oscillograph that uses an audio recognition algorithm to control the oscillograph; specifically, it controls the waveform display size attenuation and amplification as well as the scanning speed. The oscillograph display uses a standard VGA interface that can display waveforms on a PC monitor, projector, or other standard output...

Two-dimensional (2-D) block processing technique for linear filtering of digital images is introduced. New 2-D block structures are derived for 2-D recursive digital filters realized by difference equations and state-space formulations. Several special cases have also been considered and the relevant 2-D block structures are given. The computational costs of different implementation techniques ...

To successfully provide a fast FIR filter with FTT algorithms, overlapped-save algorithms can be used to lower the computational complexity and achieve the desired real-time processing. As the length of the input block increases in order to improve the efficiency, a larger volume of zero padding will greatly increase the computation length of the FFT. In this paper, we use the overlapped block ...

Fast Fourier transform algorithms are vital in many digital signalprocessing (DSP) applications. In here, both, radix-2 and radix-4 complex fast Fourier transform (FFT) implementations for fixed-point applications, using single instruction multiple data (SIMD) instructions and sub-word parallelism (SWP) is presented. It is shown that data management, and memory access are key to unleashing the ...

Large-scale digital quantum simulations require thousands of fundamental entangling gates to construct the simulated dynamics. Despite success in a variety of small-scale simulations, quantum information processing platforms have hitherto failed to demonstrate the combination of precise control and scalability required to systematically outmatch classical simulators. We analyse how fast gates c...

The Silicon Photomultiplier (SPM) offers sensitivity comparable to conventional photomultipliers with the added advantage of small size, low operating voltages, and robust tolerance to excess/ambient light. A Peltier cooled SPM running at -30°C was used in conjunction with wideband electronics and a 17-inch Astrograph to collect photometric data without a reference star. High speed photometric ...

The use of the Fast Fourier Transform (FFT) has revolutionized digital signal processing in many ways; and one of its principle uses continues to be the calculation of power spectral densities that are then used to estimate system transfer functions. When performing transfer functionmeasurements, best practise dictates that the coherence between the input and output also be computed to provide ...

This paper investigates the possibility of using Java as a language for Digital Signal Processing. We compare the performance of the Fast Fourier Transform using Java interpreters, compilers, and native execution. To characterize the Java language as a platform for signal processing, we have implemented a traditional FFT algorithm in both C and Java and compared their relative performance. Addi...

Digital Signal Processing (DSP) has become a very important and dynamic research area. Now-aday’s many integrated circuits are dedicated to DSP functions. Fourier Transform is widely used in industrial applications as well as in scientific research. The performance in terms of throughput of the processor is limited by the multiplication. Therefore the multiplier is optimized to make the input t...

Pure and Applied Mathematics—Two Sides of a Coin In November of 1979 there appeared in the Bulletin of the AMS a paper by L. Auslander and R. Tolimieri [3] with the delightful title “Is Computing with the Finite Fourier Transform Pure or Applied Mathematics?” This rhetorical question was answered by showing that in fact the finite Fourier transform and the family of efficient algorithms used to...