A spectrogram, or sonogram, is a visual representation of the spectrum of frequencies in a sound, at each time. Spectrograms are also called spectral waterfalls, voiceprints, or voicegrams. Spectrograms are used extensively in the development of the fields of music, sonar, radar, and speech processing, seismology, etc.
Questions tagged [spectrogram]
502 questions
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Spectrogram Matlab
I have the following code in matlab:
[Sound Fs bits] = wavread('a.wav');
Now i have to use the function spectrogram and plot it (i have to give the function spectrogram the following arguments: Sound and Fs and the function is suposed to return a…
user2300158
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Spectrogram (Narrow-band, Wide-band) code in Matlab
I want the code for demonstration of the spectrogram, narrow-band and wide-band.
I know that there is a function 'specgram'.
specgram(signal, nfft, fs, window, nooverlap);
But my question is that what should be the values of parameters 'window',…
Amey Kelkar
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audio pattern matching in matlab
Can someone please give me an idea about this problem in matlab ,
I have 4 .wav files that contain the chirping of the birds . Each .wav file represents a different bird. Given an input .wav file , I need to decide which bird it is . I know I have…
Prashant
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Draw a Spectograph for FFT iOS
I am developing a code to display Spectrograph on iOS devices.I have the FFT data with me how to I plot the Spectograph with the FFT data.
Karthik_S
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How do I mark on a figure's spectrogram?
Using a figure to create a new one, then spectrogram to plot on it, how do I mark a certain point on the existing figure?
winuall
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Audio frequency and amplitude
I need to record audio from iPhone. During recording I need to know, how many audio waves I have at the current moment and frequency and amplitude of each wave.
It seems to me, that avaudiorecorder can't help me.
I had a look at Apple's SpeakHere…
Paul T.
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Finding the peaks of a spectrogram
I am currently working on a project for my 2nd year. I am supposed to code in java a tuner. I have chosen to do a guitar tuner.
After looking around on the internet, I found a java code to do a FFT. I changed it a bit, understood it and have tested…
fireangel3000
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Audio frequency analysis - Python
I generated this spectrogram (hann window, logaritmic scale) with Audacity. I need to generate similar data with Python basing on .wav file. Does anyone know, which libraries/functions should I use?
pablo99
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Execution Stuck by using function of Scipy in Azure Functions
I have an Azure Function in which I am using scipy library for sound detection. On signal.spectrogram line, execution stuck. I have checked monitor log of that Azure Function and find attached error. But I did not understand this error.
How can I…
Hunzla Ali
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How can i save spectrogram of audio file (.wav) from folders and sub-folders?
I have 276 audio file (.wav). I want to plot signal and spectrogram together like following code:
import matplotlib.pyplot as plot
from scipy.io import wavfile
samplingfrequency, signaldata =…
narges66
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Display a spectrogram using Swift 3
I would like to display a spectrogram in Swift for macOS.
When displaying a wave file or a spectrum, I use a NSBezierPath. The lines don't change color.
Is this case, each FFT would be represented by a vertical line which points represent the…
pm200107
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2 answers
How to get a time series based on a spectrogram in Python?
I have a time series and generate its spectrogram in Python with matplotlib.pyplot.specgram.
After I make some analysis and changes I need to convert the spectrogram back into time series.
Is there any function in matplotlib or in other library…
Lina
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1 answer
Frequency - linear bins to logarithmic screenspace
I'm working on project, where I need to visualize spectral analysis to set some precise parameters. Now I'm with conversion of bins to screen space, because in linear space, magnitudes in lower frequencies are squashed together. Here's my code in…
sphere42
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How to detect frequencies with matplotlib spectrogram?
I have the following spectrogram of a pressure signal:
The data is available here.
I am trying to calculate frequency of the different harmonics of the pressure fluctuation. I made an attempt in calculating some of them shown by the white…
Tom Kurushingal
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How do I get rid of the vertical stripes in my spectrogram?
Within the scope of a paper I am writing at high school I chose to make my own audio-file-to-spectrogram-converter from scratch in order to create landscapes out of these spectrograms.
I already do have my implementation of an FFT and of using that…
Metaphalo
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