## Down-sample Spectrogram (Waterfall) by two different factors

HiI 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 ago28 replieslatest reply 1 year ago521 views
I'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 ago8 replieslatest reply 1 year ago307 views
Hi 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...

## RF loss during lighting strike

Started by 1 year ago2 replieslatest reply 1 year ago155 views
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 1 year ago4 replieslatest reply 1 year ago346 views
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...

## Digital signal processing

Started by 1 year ago4 replieslatest reply 1 year ago361 views
“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 ago5 replieslatest reply 1 year ago603 views
Which 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.

## LEGO Block Filters

Started by 1 year ago12 replieslatest reply 1 year ago320 views
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 ago13 replieslatest reply 1 year ago225 views
All,Specification location: FlexLinkPhy2023_v10.pdfOver the last several months I have gathered a few people and we have developed an OFDM specification for point...