anjali parashar

Active since 2013

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Professional Interests: audio signal processing

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Question

i am adding gaussian noise signal to an audio signal. but in plotting i am receiving an error " ??? Error using ==> plot Vectors must be the same lengths" how can i make equal vectors?
[y,fs,nbits]=wavread('C:\Users\HP\Desktop\s1.wav'); n=randn(size(y))*sigma+mu*ones(size(y)); ny=length(y); ...

12 years ago | 1 answer | 0

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Question

in the frequency domain waveform of an audio file, it is showing frequency range in spectrum upto 100 kHz. but i want the range upto 1 kHz . wht is the wrong in frequency range? please provide correct frequency range.
yfft=fft(y); % fft of original signal f=-length(y)/2:length(y)/2-1; k=20*log10(abs(yfft)); plot(f,k);

12 years ago | 0 answers | 0

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Question

i want frequency domain spectrum of an audio file and i want to set frequency range of about 3 kHz. it is showing range upto 10 kHz. how can i modify it?
yfft=fft(y); % fft of original signal N=length(y); f=(-1/2:1/N:1/2-1/N)*fs; plot(f,k);

12 years ago | 1 answer | 0

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Question

i want frequency domain spectrum of an audio file but i am getting amplitude range upto 0-6000. how can i normalize it? sampling rate is 48kHz
[y,fs,nbits]=wavread('C:\Users\HP\Desktop\s1.wav'); N = length(y); f = (-1/2:1/N:1/2-1/N)*fs; plot(f,abs(yfft));

12 years ago | 0 answers | 0

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answers

Question

i want frequency domain spectrum of an audio file but i am not getting right frequency range. it is showing freq. range upto 100 kHz but i want to get it upto 10 kHz. what is the problem in frequency range?
yfft=fft(y); % fft of original signal f=-length(y)/2:length(y)/2-1; k=20*log10(abs(yfft)); plot(f,k);

12 years ago | 1 answer | 0

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answer

Question

i am adding two sound waves. i am receiving an error : ??? Error using ==> plus Matrix dimensions must agree. how i can add these two waves?
[y,fs,nbits]=wavread('C:\Users\HP\Desktop\angel_48k_stereo.wav'); [z,fs,nbits]=wavread('C:\Users\HP\Desktop\keyboard_48k.wav'...

12 years ago | 1 answer | 0

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Question

in speech editing i am receiving an error using sound. ??? Error using ==> playsnd Data must have one or two columns. Error in ==> sound at 58 playsnd(y,fs,bits); is there any problem with sound function?
yfirst= y(1:24000); ysecond=y(24001:48000); save anjali ysecond yfirst -ascii load anjali -ascii t=0:1/fs:length(an...

12 years ago | 1 answer | 0

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Question

i am doing speech editing. i want to give 2 second pause i am receiving error. ??? Error using ==> load Number of columns on line 1 of ASCII file C:\Users\HP\Documents\MATLAB\anjali must be the same as previous lines. is there a problem with load?
save anjali ysecond yfirst -ascii load anjali -ascii

12 years ago | 2 answers | 0

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Question

i want to add keyboard voice to my voice. how i can add two audio waves? here no. of samples are 48000.. in this i am recieving an error that ??? Error using ==> vertcat CAT arguments dimensions are not consistent. how i can solve
[y,fs,nbits]=wavread('C:\Users\HP\Desktop\anjali.wav'); sound(y,fs) t=0:1/fs:length(y)/fs-1/fs; %%%%%% keyboard noise ...

12 years ago | 1 answer | 0

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Question

how i can combine keyboard voice to my voice. i am giving the code which i am using.
[y,fs,nbits]=wavread('C:\Users\HP\Desktop\anjali.wav'); sound(y,fs) t=0:1/fs:length(y)/fs-1/fs; % original waveform ...

12 years ago | 0 answers | 0

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