Signal Processing Questions, Problems & Solutions : TransWikia.com ~ Page 14

What is the difference between a range image and a depth map?

https://en.wikipedia.org/wiki/Depth_map https://en.wikipedia.org/wiki/Range_imaging To me, it sounds like they are the same thing, except depth map implies only having the z coordinate info. But then again, if...

Asked on 02/21/2021 by UXkQEZ7

1 answer

Weird ringing at signal start and end for default Matlab lowpass filter

**FIND UPDATES BELOW THE ORIGINAL QUESTION TEXT: I am trying to lowpass filter electrophysiological data and I see ringing near sharp transients at signal start and end. Ringing at start:...

Asked on 02/19/2021 by Anand Kulkarni

1 answer

Adding attenuations in dB

I am writing a synthesizer. One part of the synthesizer specification says that different sources can specify an attenuation to be applied to a signal, and that these attenuations should...

Asked on 02/12/2021 by jumbot

1 answer

Most efficient way to find single dominant frequency (without amplitude) in analog signal

I want to construct a reference locked sine oscillator. The multibit sine wave is calculated using DDS. The multibit reference signal is typically not sinusoidal, can have offset and substantial...

Asked on 02/11/2021 by tobalt

0 answer

Blind Estimation of Signal Parameter and Noise Variance

Let $y[n]= h*x[n] + w[n]$, where $h$ is an unknown but deterministic parameter, $x[n]$ is a BPSK random variable with equal probability of +1 and -1, ...

Asked on 02/10/2021 by Dsp guy sam

1 answer

Finding the system output by convolution

pretty new to this concept, so do bear with me. A linear dynamic system is described by the following differential equation: Transfer...

Asked on 02/10/2021 by Jisbon

1 answer

Estimating a Filter's Envelope

Are there any established techniques for estimating the envelope of a swept filter? I tried a first order piece-wise polynomial approximation using the SHGO global minimizer algorithm (Python code below),...

Asked on 02/08/2021

0 answer

Audio Activity Detection and Classification

I am starting a new project. Actually, my real intention is to learn speech recognition but for warming up I want to improve in audio signal processing.In my project,...

Asked on 02/07/2021

1 answer

How can i identify number of return of the ping in the sonar?

I am writing a fake function which is actually doing active pinging (basically SONAR). I am little confuse here about how to identify the number of sonar return i got...

Asked on 02/06/2021 by Jay Patel

0 answer

Difference between Analog IQ sampling and creating IQ digitally

In the context of wideband receiver design, what are the advantages and disadvantages of Analog IQ sampling vs creating IQ digitally (with Hilbert transform)? ...

Asked on 02/05/2021 by malik12

1 answer

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