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Resources: Fast Convolution Covers various implementations of linear convolution using the DFT, including Overlap-Add and Overlap-Save. Upsampling vs. Oversampling for Digital Audio An article about the benefits of these techniques. The Scientist and Engineer’s Guide to Digital Signal Processing A great practical introduction to DSP. (Free to download) Information on Gibbs Phenomenon Wikipedia article on [...]

General DSP Central dspGuru a lot of good free information on DSP was available, it covers Tutorials, HowTos, Tricks, and more. TechOnline provides users with a host of education resources, which range from Webinars to online courses to a research library of white papers. At the same time, the site offers engineers the chance to [...]

“Linear Phase” refers to the condition where the phase response of the filter is a linear (straight-line) function of frequency (excluding phase wraps at +/- 180 degrees). This results in the delay through the filter being the same at all frequencies. Therefore, the filter does not cause “phase distortion” or “delay distortion”. The lack of [...]

Selected Datasets Astronomy Sloan Digital Sky Survey The Sunspot Cycle Biomedical EEG Data RR series Physiobank AtGenExpress Blog Weblogs and social media 2007 Blog06 Climate and environmental data Earth Trends : data tables. lifeunderyourfeet: soil data collected from wireless sensors Envirofacts Data Warehouse European Climate Assessment&DataSet National Space Science & Technology Center Documentation a data [...]

If we could transmit a 1 kHz sine wave over a channel having a bandwidth of 1 kHz, how much bandwidth do we need if we would like to transmit a 1 kHz square wave?