Respondida
How to remove the background/background noise from the images that comprise my video?
I think you got me wrong. You have performed tophat after you have processed the frames. You have to use imtophat before you pro...

casi 14 años hace | 0

Respondida
How to remove the background/background noise from the images that comprise my video?
Use top hat or bottom hat. It is used to reduce illumination

casi 14 años hace | 0

Pregunta

Bandwidth of a channel
Bandwidth of a signal is the difference between the upper and the lower frequencies. What do by mean by bandwidth of a channel?...

casi 14 años hace | 1 respuesta | 0

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respuesta

Pregunta

Qpsk decreases the bandwidth
I learnt that bandwidth is the bit rate. But when I was learning Qpsk I came across this sentence "For a given bit rate...

casi 14 años hace | 0 respuestas | 0

0

respuestas

Pregunta

iphone x-ray scanner
I was just wondering how the iPhone x-ray scanner (that scans palms) is working. Does that really send out x-rays? If so, ...

casi 14 años hace | 1 respuesta | 0

1

respuesta

Pregunta

Difference between pitch and frequency?
What is the difference between pitch and frequency? I would be happy if you give me some examples too.

alrededor de 14 años hace | 1 respuesta | 0

1

respuesta

Pregunta

Polyphase filter
I have been reading about this since yesterday and I couldn't come to any conclusion. I need your help. Consider a signa...

alrededor de 14 años hace | 3 respuestas | 0

3

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Pregunta

Convolution encoder
I got a doubt in this convolution encoder. When one or two incoming bits per symbol enter a rate-1/2 or rate 2/3 b...

alrededor de 14 años hace | 1 respuesta | 0

1

respuesta

Pregunta

Fourier transform- a general question
Fourier Transform is used for representing non-periodic waves in terms of cosines and sines. Yesterday when I recorded my v...

alrededor de 14 años hace | 1 respuesta | 0

1

respuesta

Respondida
1)Amplitude modulation. 2) Negative amplitudes in the signal??
To find the spectrum of the signal is there any other method apart from fft()?

alrededor de 14 años hace | 0

Respondida
1)Amplitude modulation. 2) Negative amplitudes in the signal??
I have another doubt too (that I got before 6 months). How can frequency be negative? I mean how can you say "the no of oscilla...

alrededor de 14 años hace | 0

Pregunta

1)Amplitude modulation. 2) Negative amplitudes in the signal??
I studied about AM before 6 months, I believe. When I studied that I got some doubt. How do you say AM takes twice the ban...

alrededor de 14 años hace | 5 respuestas | 0

5

respuestas

Respondida
Speech processing using matlab
I did that by taking fft and considering only the first half of the spectrum.

alrededor de 14 años hace | 0

Pregunta

time step problem in neural networks
Instead of normal array I tried using cells as input. input=[ c1 c2 c3 c4 c5 ]; where c1,c2,c3,c4 and c5 are the cells o...

alrededor de 14 años hace | 0 respuestas | 1

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Pregunta

Speaker dependent speech recognition
I saw this link http://www.mathworks.in/company/newsletters/digest/2010/jan/word-recognition-system-matlab.html and I got some ...

alrededor de 14 años hace | 0 respuestas | 0

0

respuestas

Respondida
Gaussian mixture model--maximum likelihood
Someone please answer my question.

alrededor de 14 años hace | 0

Respondida
Gaussian mixture model--maximum likelihood
I have only one doubt. I have about 12 means for every class and when I compare it with the given data (and find the log likeli...

alrededor de 14 años hace | 0

Pregunta

retrain neurons
I asked this question before and no one replied. So I am asking this again. I am new to neural networks. I tried the probabil...

alrededor de 14 años hace | 1 respuesta | 0

1

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Pregunta

Reading audio
I recorded my voice and then converted that file to .wav format. then I did the following y=wavread('filename'); sound(y...

alrededor de 14 años hace | 1 respuesta | 0

1

respuesta

Pregunta

Gaussian mixture model--maximum likelihood
I have 3 classes and I modeled the GMM for those classes with 12 components for each model. Now I have a data from one o...

alrededor de 14 años hace | 4 respuestas | 0

4

respuestas

Pregunta

Gaussian Mixture Model
I am doing voice recognition using MFCC and GMM. First I found out the melcepst coefficients. There were about 12 mel ...

alrededor de 14 años hace | 0 respuestas | 0

0

respuestas

Respondida
Speaker recognition
What do you think about neural networks? It worked perfectly when I was doing image processing. Will that work with this?

alrededor de 14 años hace | 0

Respondida
Speaker recognition
Do I have to use the guassmix function of the voicebox? Thanks in advance.

alrededor de 14 años hace | 0

Respondida
Speaker recognition
William I am much awaiting for your response.

alrededor de 14 años hace | 0

Pregunta

Speaker recognition
I am going to do a project based on speaker recognition (not speech recognition). I saw many files in the internet and came acr...

alrededor de 14 años hace | 8 respuestas | 0

8

respuestas

Pregunta

ifft
I want to distort the phase of the frequency spectrum of a signal and not the magnitude. After that I want to find out the ifft ...

alrededor de 14 años hace | 2 respuestas | 0

2

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Pregunta

Two channels of a music
I am new to speech processing. When I saved the audio 'handel' in a variable 'y' I got only one channel. But when I did the ...

alrededor de 14 años hace | 1 respuesta | 0

1

respuesta

Respondida
How to change the pitch of a signal?
If possible provide me the code. Here's my code load handel.mat k=ifft(y); k1=k(1:length(k)/4); k2=k(3*length(k)/4:length(k)...

alrededor de 14 años hace | 0

Respondida
How to change the pitch of a signal?
I tried it but there doesn't seem to be any change in the pitch. Instead it was very fast and it played two times instead of one...

alrededor de 14 años hace | 0

Pregunta

How to change the pitch of a signal?
I think you might have seen Tom Cat apps of Iphone. In that it will speak what you speak but in a different pitch. How to...

alrededor de 14 años hace | 3 respuestas | 0

3

respuestas