14 questions linked to/from Noise detection
42k views

### Peak Signal to Noise Ratio (PSNR) in Python for an Image

How do I calculate the maximum signal to noise ratio (PSNR) in Python? Is there any library that can calculate PSNR for Image?
7k views

### What is the practical meaning of the variance, covariance, mean value?

What is the practical meaning of variance, covariance and mean for a signal?
2k views

### How to calculate Time Delay Estimation?

I have 2 data files, which links are attached below: Transmitted data Received data Those binary data are read by this MATLAB code: %% EDIT: clear all; close all; format long; ...
536 views

### How can I find SNR, PEAQ, and ODG values by comparing two audios?

I have two audios, A and B. B is the noisy version of A. I want to know how much B is different from A. Can I do this by calculating signal to noise ratio (SNR), Objective difference grade (ODG), and ...
219 views

### SNR Signal to noise ratio of Pseudo random bit sequence (PRBS)

How should I estimate the Signal to noise ratio of a 20 Gbps NRZ PRBS pattern from power spectral density--where should I take the noise floor if I can assume well the noise is AWGN? I know roughly ...
99 views

### Compare the quality of IQ data from different Software Defined Radios (SDRs)

I want to know what methods are best to scientifically evaluate the quality of different Software Defined Radios (SDRs) that spit out IQ samples. For this question, I would like to set the boundary ...
158 views

### Is there a way to determine the quality of an impulse-response relationship?

I'm new to system ID so be gentle. I have a modeled signal of streamflow that I would like to map to an observed signal of stream height. This lends itself nicely to a simple impulse-response kind of ...
64 views

### Correlation: A Magnitude or Power quantity?

I am confused about the units we would refer to with a correlation result in that if it would be a magnitude or power quantity (and therefore specifically when using ratios in dB would we use 10Log or ...
93 views

### Determining SINAD from measured data

I would like to determine the SINAD of a distorted signal from a measurement and have troubles to get consistent data. The problem is (at least to my understanding) that I only have a very limited ...
68 views

### How to calculate the SNR from the data collected by ADC?

I want to design a filter to deal with periodic signals according to the actual collected data. In practice, I would like to use the SNR as the criterion to judge the performance of the filter. ...
68 views

### SNR estimation prior to demodulation?

What are the standard ways to measure SNR, particularly before demodulation/synchronization?
77 views

### How to measure EVM?

I am trying to understand the concept of EVM and how it is measured at different points in transceiver. I have a basic understanding that the error difference is calculated between two vectors (i.e. ...
I'm looking for the method to calculate theoretical similarity of two random noises $x$ and $y$ with mean $0$ and standard deviation $1$, I've got also $12500$ samples of signal, sampled $2.5$ Ga/s. ...