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Down-sample Spectrogram (Waterfall) by two different factors
Started by 1 year ago●1 reply●latest reply 1 year ago●173 viewsHiI want to down-sample a Spectrogram (Waterfall) image, time on 'y' axis and frequency on 'x' axis. What I would like is to do is down-sample the image when it...
Data overflow in fixed point DC removal filter, Richard Lyons Fig 13.65(b)
Started by 6 years ago●28 replies●latest reply 1 year ago●521 viewsI'm reading the 3rd edition of Richard Lyons' excellent book and am a bit confused by the DC-removal filter in Figure 13-65(b). If the input to the quantizer Q...
Trying to wrap my head around FFT and SDR...
Started by 1 year ago●8 replies●latest reply 1 year ago●307 viewsHi there! First-time poster here and very new to DSP and the like, so please excuse any ignorance and falsities. Pilots use a sequence of radio key-on's within...
Not really DSP, but I thought that some of the HAM guys on this forum may have seen this before.Have you every noticed when lighting strikes it causes the RF signal...
Started by Before I have not read Hogenauer's paper, but when I read I am confused about the paper. Could somebody help me?The denominator of (A2)，Here |z| = 1, why the second...
Started by “Digital
signal processing is a veritable ocean. Take as many soundings in it as you
will, you will never know its depth.” ...
Sigma-delta DAC or delta-sigma DAC?
Started by 1 year ago●5 replies●latest reply 1 year ago●603 viewsWhich is more correct: sigma-delta DAC or delta-sigma DAC?If both are valid forms and there are differences, I would like to know that too.
Hello All,Considering the availability of mature and and advanced linear phase FIR filter design techniques, many might look sideways at "novel claims" for filter...
#OFDM point to point specification
Started by 1 year ago●13 replies●latest reply 1 year ago●225 viewsAll,Specification location: FlexLinkPhy2023_v10.pdfOver the last several months I have gathered a few people and we have developed an OFDM specification for point...
How to calculate biquad cascade coefficient
Started by 1 year ago●25 replies●latest reply 1 year ago●474 viewsMy FFT code uses CMSIS DSP function arm_biquad_cascade_df1_f32() with coefficients set up for 12kHz, sample rate 48k, 60dB stopband, elliptic.I know the original...
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