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Showing posts with the label Signal Processing

Equivalence Scipy.signal Welch To Matlab Pwelch

I have the following MATLAB code to compute the PSD of a signal: x = linspace(0, 10, 100001); dt = … Read more Equivalence Scipy.signal Welch To Matlab Pwelch

Counting Data Points Within Limits, And Applying Buffer To Isolated Points [data Analysis]

I am stuck trying to solve this problem: I have a set of data points, that correspond to a set of t… Read more Counting Data Points Within Limits, And Applying Buffer To Isolated Points [data Analysis]

Find The Timestamp Of A Sound Sample Of An Mp3 With Linux Or Python

I am slowly working on a project which where it would be very useful if the computer could find whe… Read more Find The Timestamp Of A Sound Sample Of An Mp3 With Linux Or Python

Can I Use Autoregression Modelling For Signal Denoising?

As follows, my task is to use AR modeling to remove artifacts from noisy signals. Let's say I h… Read more Can I Use Autoregression Modelling For Signal Denoising?

How Get Low Frequency From Dtmf Tone

Hi have made one source in python for get fundamental frequecys from audio files, i want use this f… Read more How Get Low Frequency From Dtmf Tone

How To Find The Inflection Point In A Noisy Curve?

I have the the noisy curve defined by numpy 2D array: As you can see, it has the first flat segmen… Read more How To Find The Inflection Point In A Noisy Curve?

Valueerror: Could Not Broadcast Input Array From Shape (20,590) Into Shape (20)

I am trying to extract features from .wav files by using MFCC's of the sound files. I am gettin… Read more Valueerror: Could Not Broadcast Input Array From Shape (20,590) Into Shape (20)

Downsample A 1d Numpy Array

I have a 1-d numpy array which I would like to downsample. Any of the following methods are accepta… Read more Downsample A 1d Numpy Array

Get Lag With Cross-correlation?

Let's say have have two signals: import numpy dt = 0.001 t_steps = np.arange(0, 1, dt) a_sig =… Read more Get Lag With Cross-correlation?

Get Lag With Cross-correlation?

Let's say have have two signals: import numpy dt = 0.001 t_steps = np.arange(0, 1, dt) a_sig =… Read more Get Lag With Cross-correlation?