Questions about frequency-analysis
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FFT outptut for a signal with 2 cosf() cycles
I am transforming a signal using the ZeroFFT library. The results I get from it, are not what I would intuitively expect.
As a test, I feed the FFT algorithm with a buffer that contains two full cycle...
Bram
Votes: 0
Answers: 1
How to obtain a clear spectrograph of an oversampled sinusoid with increasing frequency?
Consider following example:
import numpy as np
import scipy as scp
import matplotlib.pyplot as plt
#make signal
deltat = 1e-4
t = np.linspace(0,300000,300001) * deltat
y = np.exp(-t/10)*np.sin(np.pi ...
Karlo
Votes: 0
Answers: 0
Chirp signal won't generate continuous frequency band
I am trying to apply an AC signal with a continuous "band" of frequencies, I generate the waveform in MATLAB and use the welch spectrum analysis to get a nice continuous band of frequencies ...
Steven Baro
Votes: 0
Answers: 0
lfs(linear frequency shift) function on a wav file using R
I'm trying to use lfs(linear frequency shift) function on a wav file I recorded using R.
Here is the code I ran, and features of my wav file.
library(tuneR)
library(MASS)
library(seewave)
setwd...
Minkyung
Votes: 0
Answers: 1