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2008-09-04 Implementing the Fast Fourier Transform for the Xtensa processor
The goal of this application note is to show the results and design methodology for a high-performance DSP sample application on the Xtensa microprocessor using a widely known example, the FFT.
2001-05-07 Implementing fast Fourier transform algorithms of real-valued sequences with the TMS320 DSP family
This application note discusses the theory and usage of two algorithms used to efficiently compute the DFT (Discrete Fourier Transform) of real-valued sequences as implemented on Texas Instruments' TMS320C6x DSP family.
2000-06-01 Implementation of Fast Fourier Transforms
This application note provides the source code to compute the Fast Fourier Transform (FFT) using the PIC17C42 microcontroller. The theory behind the FFT algorithms is well established and described in the literature and hence not described in this application note.
2004-11-16 Fast Fourier transforms speed up, stretch out
The move toward wideband networking standards has created an immediate need for a wide-spectrum test equipment.
2001-05-07 Extended precision radix-4 fast Fourier transform implemented on the TMS320C62xx
This application note illustrates how extended precision arithmetic, multiplication in particular, can be performed on the TMS320C62xx fixed-point DSP family using the Radix-4 Fast Fourier Transform (FFT).
2001-04-26 Accurate Fourier analysis for circuit simulators
This application note presents an accurate and flexible approach to Fourier analysis, which is based on the direct computation of the Fourier integral, within the context of circuit simulation.
2014-05-12 Use FFT on sigma-delta ADCs
Learn about two topics in digital signal processing and metering, namely FFT and the SD ADC.
2014-12-22 The nitty-gritty of product specification
It's not practical for makers to provide performance data for every conceivable test conditions, which is why performance characteristics range from maximum or worst-case performance scenario.
2002-04-22 The 'Spectrum' Chart extension (Windows)
This application note describes the process of calculating the frequencies of selected data up to 16 channels using Spectrum, a general extension for Windows.
2003-02-11 SiWorks ships high throughput cores
The company's high throughput parallel FFT and Viterbi cores addresses the growing demand of customers for high-speed signal processing apps.
2011-12-19 Signal chain basics: Understand spurious signals in high-speed ADCs
Learn the various approaches for tracking down spurious signals in high-speed analog-to-digital converter systems.
2005-07-13 RFEL introduces FFT core library for Xilinx FPGAs
FPGA provider RF Engines Ltd (RFEL) has announced a library containing more than sixty fast fourier transform (FFT) cores for use in Xilinx FPGA devices.
2003-08-29 Practical GMSK Data Transmission
This application note discusses the basic principles of Gaussian filtered Minimum Shift Keying Transmission
2011-09-14 Pipeline FFT core boasts 52GS/s
The Hyperspeed Plus targets applications that require very high sampling rate such as wideband surveillance and test instrumentation.
2011-09-22 Performing high-res spectral estimation of vibration data
Here's a look at the suitability of the Freescale MMA9550L Intelligent Motion-Sensing Platform for high-resolution, real-time spectral analysis of vibration data for engine monitoring and failure prediction.
2003-01-23 Pentek VIM-2 module improves wireless signal quality
The Model 6236 ADC VIM-2 module enables multi-carrier software radio architectures in wireless basestations to achieve higher levels of signal quality.
2002-08-07 Pentek offers FPGA receiver, design kit
Pentek Inc. has released the GateFlow installed cores featuring a streamlined FFT implemented on an FPGA-based dual-channel wideband receiver, and the GateFlow FPGA Design Kit.
2014-11-10 Peak floating-point performance calculations
Read about a methodology that provides designers a reliable technique for the baseline comparison of the peak floating-point computing capabilities of devices with very different architectures.
2004-02-24 PC-based spectrometer powers latest radio telescope
The Max Planck Institute for Radioastronomy has built a 40MHz digital Fast Fourier transform spectrometer that it claims will greatly improve the performance and cost of radio telescopes.
2013-04-26 Parallel FFT for multi-GHz FPGA signal processing
Learn about the design of a parallel FFT with runtime-configurable transform length, with emphasis on the throughput and utilisation numbers that are achievable when using parallel FFT.
1999-10-26 Parallel 1-D FFT implementation with TMS320C4x DSPs
The purpose of this application note is to investigate efficient partitioning/parallelization schemes for one-dimensional (1D) FFTs on the TMS320C40 parallel processing DSP. This document focuses on complex FFTs; however, the concepts used can be easily applied to real FFTs. This paper covers both Decimation-in-Time (DIT) and Decimation-in-Frequency (DIF) methods of computation to give flexibility in programming and to demonstrate the results of parallelization on both methods.
2013-03-15 Look-up tables for improved signal processing
The method could lead to devices that occupy smaller areas, provide higher throughput of information, and consume less power than existing devices.
2001-05-09 Implementing a spectrum analyzer using a 128-point FFT and the TMS320F240 EVM
This application note describes how to produce a spectrum analyzer using a 128-point Fast Fourier Transform (FFT) and the D/A converter of TMS320F240 DSP evaluation module.
2001-05-16 Implementation of the double-precision complex FFT for the TMS320C54x DSP
This application note describes how to implement a double-precision complex Fast Fourier Transform (FFT) C-callable code library for Texas Instruments' TMS320C54x fixed-point DSP.
2002-08-16 Hardware design crucial for mobile DSPs
This article discusses the necessary features hardware devices should include to accommodate the requirements of mobile DSPs supporting 3G and 4G technologies.
2011-11-02 Grasping the Goertzel algorithm
Understand the Goertzel algorithm and how it can perform tone detection using much less CPU horsepower than the Fast Fourier Transform.
2003-12-22 FFT Routines for the C8051F12x Family
This application note describes the Fast Fourier Transform (FFT) routines for the C8051F12x family, which includes the C8051F124, C8051F125, C8051F126, and C8051F127.
2002-02-16 Essentials in analyzing adaptive/predictive signals
This technical article describes the techniques on how to evaluate adaptive and predictive signals in electronics equipment for engineering or entertainment purposes.
2005-05-16 Electromagnetics for firmware people
A firm grasp of electromagnetics, now the foundational science of digital engineering, is important as systems get faster
2003-05-02 DSP app? 80-20 rule still works
Signal processing application is no different than any other embedded application. You will spend 80 percent of execution time in 20 percent of your code and let the compiler take care of the other 80 percent.
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