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pranjal


24 total contributions since 2014

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Question


how to get confusion matrix when neural network toolbox is used?
i have used NN toolbox for classification. after network is trained, "performance plot", "regression plot" and "training state p...

6 years ago | 2 answers | 0

2

answers

Question


how to find variance of audio signal?
i have cry signal as my audio input in .wav format. want to find its variance. pls help

6 years ago | 1 answer | 0

1

answer

Question


how to find variance of audio signal?
i am working on cry samples of infants to classify jaundice and Apnea ailment(based on cry analysis). Using STFT pitch is tracke...

6 years ago | 0 answers | 0

0

answers

Question


want to display output in the form of texts in neural network.pls help
my project is classifying audio signals as normal, jaundice or apnea ailment baby cry signals. i have constructed neural network...

6 years ago | 1 answer | 0

1

answer

Question


what type of input is given for ANN (neural network)?
i have audio files of 3 different types and want to classify them. planning to use neural network for this which will automatica...

6 years ago | 2 answers | 0

2

answers

Question


which classifier is suitable for classifying audio signals using MFCC?
I am working on audio signals(infant cry signals).I have extracted mel frequency cepstral coefficients (MFCCs) of all samples. n...

6 years ago | 0 answers | 0

0

answers

Question


what are "frequency bins"?
when spectrum of signal is plotted at many places term frequency bins is used instead of frequency.what it means?how is it diffe...

6 years ago | 1 answer | 0

1

answer

Question


how to convert audio signal into binary signal for using in classifier?
i have audio signals and want to classify them in 3 categories. what type classifier i can use? for that my audio files needs to...

6 years ago | 0 answers | 0

0

answers

Question


what does blue colour in frequency representation of audio signal indicates?
i have audio signal which is baby's cry signal. it is plotted in frequency domain. signal is shown in green colour but some part...

6 years ago | 1 answer | 0

1

answer

Question


anyone has matlab code of classifier for audio classification?pls help
I have 3 sets of audio signals in .wav format. one set is healthy infant cry signal. other with Jaundice and Apnea disease. i wa...

6 years ago | 0 answers | 0

0

answers

Question


how to change the frequency scale of spectrogram?
i have plotted spectrogram of 'cry signal' and want to observe the exact frequencies on it.is it possible to change the scale o...

6 years ago | 0 answers | 0

0

answers

Question


what is the unit of amplitude when 'cry signal' is represented in time domain?
when cry signal(audio signal)is represented in time domain, what is the unit of amplitude(y-axis)? At many places i found diagra...

6 years ago | 1 answer | 0

1

answer

Question


how many training samples are required for knn classifier? (minimum number of samples)
for knn classifier to be used what is the minimum required number of training data or samples needed?

6 years ago | 0 answers | 0

0

answers

Question


how to use knn classifier for classifying cry signals of infants?
i am working on cry signals of new born babies. mainly i want to classify normal baby and babies with apnea and jaundice ailment...

6 years ago | 1 answer | 0

1

answer

Question


need help in plotting mel frequency cepstral coefficients.
audio signal is inputted in .wav format and its mel frequency cepstral coefficients are extracted(MFCCs). these are stored in va...

6 years ago | 1 answer | 0

1

answer

Question


how to assign variable for an array?
i have got cepstral coefficients as 13x1728. i want to store dem in a variable N1.how to do that?

6 years ago | 1 answer | 0

1

answer

Question


how to do clustering of MFCCs?
i was trying MFCC code from one website in which following parameters are defined. % Define variables Tw = 25; ...

6 years ago | 0 answers | 0

0

answers

Question


how to plot cepstral coefficients ?
i have an audio file whose mel frequency cepstral coefficients are extracted. i want to plot these coefficients.how can i do it?...

6 years ago | 0 answers | 0

0

answers

Question


how to extract mel frequency cepstral coefficients of an audio file
please help me with matlab code for extracting coefficients i.e.MFCC of .wav file.can anyone give me the code.

6 years ago | 0 answers | 0

0

answers

Question


Can anyone help me to write code for MFCC?
I have audio file in .wav format. i want code to find MFCC. pls help

6 years ago | 0 answers | 0

0

answers

Question


need help in solving error in code of "cepstral pitch"
from the link "http://in.mathworks.com/matlabcentral/fileexchange/45558-cepstral-pitch" i downloaded codes for cepstral pitch de...

6 years ago | 0 answers | 0

0

answers

Question


can anybody help me to write matlab code for "pitchtrack" using STFT(short time fourier transform) analysis?
am working on cry signal of baby. inputted in .wav format. pitch(fundamental frequency) is estimated using cepstrum analysis. I ...

6 years ago | 0 answers | 0

0

answers

Question


For matlab command wavread(filename, [N1 N2]), how to choose N1 and N2 values?
In one of the speech processing code, [24120 25930] is used. I am working with .wav file but don't know how to choose these val...

6 years ago | 1 answer | 0

1

answer

Question


can anyone tell me how to remove unvoiced or silenced region from audio file?
I have .wav file having voiced and unvoiced segments.I want to remove unvoiced part of it. so that processing time can be reduce...

6 years ago | 2 answers | 1

2

answers