EFCL Channelizer

  Authors

Klusáček, David

  Item identifier

http://hdl.handle.net/11234/1-2380

 Project URL

http://atrey.karlin.mff.cuni.cz/~klusacek/EFCL.html

 Date issued

2017-01-10

 Type

toolService

 Description

Extremely fast digital audio channelizer implementation, usable as a building block for experimental ASR front-ends or signal denoising applications. Also applicable in software defined radios, due to its high throughput. It comes in a form of a C/C++ library and an executable example program which reads input stream, splitting it into equidistant frequency channels, emitting their data to the output. Features: (1) Hand tuned SIMD-aware assembly for x86 (SSE) and IA64 (AVX) as well as for ARM (NEON) processors. (2) Generic non-SIMD C++ implementation for other architectures. (3) Capable of taking advantage of multicore CPUs. (4) Fully configurable number of channels and the output decimation rate. (5) User supplied FIR of the channel separation filter, which allows to specify the width of the channels, whether they should overlap or be separated. (6) Input and output signal samples are treated as complex numbers. (7) Speed over 750 complex MS/s achieved on Core i7 4710HQ @ 2.5GHz, when channelizing into 72 output channels with a FIR length of 1152 samples, using 3 computing threads. (8) Runs under Linux OS.

 Publisher

Charles University, Faculty of Mathematics and Physics, Institute of Formal and Applied Linguistics (UFAL)

 Acknowledgement

Ministerstvo školství, mládeže a tělovýchovy České republiky

Project code: LM2015071

Project name: LINDAT/CLARIN: Institut pro analýzu, zpracování a distribuci lingvistických dat

 Subject(s)

Fast Channelizer Filterbank ASR Front End Software Defined Radio Polyphase Filter Frequency Multiplexing Audio Denoising High Performance Computing HPC SDR FFT FFTW SIMD AVX SSE NEON

 Collection(s)

LINDAT / CLARIAH-CZ Data & Tools

Show full item record