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PRATIBHA WARKADE


Active since 2015

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why we are taking count values as 10 10 80,what does it signify?
seq = repmat([3 3 1 3 3 3 3 3 2 3],1,50); counts = [10 10 80]; code = arithenco(seq,counts);

8 years ago | 1 answer | 0

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Question


How to calculate Rv and Rt in Visual Contrast Measurement of an image?
VCM=100*(Rv/Rt) where Rv is the number of regions in an arbitrary image that exceed a specific threshold for regional signal s...

8 years ago | 1 answer | 0

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Question


A signal whose sampling rate is 22050 Hz but what will happen if we sample it at 32KHz,44.1KHz and 48 KHz?
Is it because of oversampling may occur or it prevents aliasing?Please do suggest me the reason behind it??Thanks in advance.......

8 years ago | 1 answer | 0

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Question


if bit rate=(File size in bytes X (8 bits/bytes))/(no. of samples x no. of channels).....,whether is it correct method of doing it?thanks in advance...
file size=1.8047kb,no. of samples=230,no. of channels=2; then bit rate=(1.8047 x 8000)/(230 x 2)=31.38 bits per sample.

8 years ago | 0 answers | 0

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Question


If I have no. of channels equal to 2.I have no. of samples equal to 1264896x2,but after resampling I got the value of no. of samples as 574x2.I am confused with it that whether I need to put 1264896 or 574 as no. of samples?Please do guide me?
if bit rate=(File size in bytes X (8 bits/bytes))/(no. of samples x no. of channels).....

8 years ago | 1 answer | 0

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Question


I need to find out the bit rate of following?Whether it is correct way to do it or not? Thanks in advance
Bit rate=(file size*8000)/length of signal; Bit rate=(4.4922kb*8000)/28.68sec; and the answer is 1253.05 bits per second b...

8 years ago | 1 answer | 0

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Answered
I need to find out the compression ratio of an audio signal ?Is it correct method that I have done here?
thank u very much sir i got the answer

8 years ago | 0

Question


I need to find out the compression ratio of an audio signal ?Is it correct method that I have done here?
byte_size_of_sampled_signal=4.826071911134670e-42 kb ; byte_Size_of_compressed_data=4.663521289272991e-42kb; byte_Size_o...

8 years ago | 2 answers | 0

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Question


how to calculate the background variance(BV) an detail varaince(DV) of an image in matlab?? Thanks in advance
std=(stdfilt(temp,ones(5))); %local standard deviation Lvar=(std.^2); % local variance Background Variance?? Detail Va...

8 years ago | 0 answers | 0

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Question


how to convert audio signal having (4.82MB size ,44100 as sampling frequency , stereo signal ) to different frame length that is 1024 samples,512 samples and 2048 samples?Whether I should resample it if not than how is it possible in matlab?
my second question is that Can I convert this signal to different sampling rate also I mean at 22050Hz,48000hz etc.?or at differ...

8 years ago | 1 answer | 0

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Question


I have 6 audio signals each of length 2.32 sec,sampled at 44.1KHZ sampling rate with 16 bits floating point ,I want to divide these signals into frames each of length 23.2 msec(1024 samples) in matlab?
length of signal=2.32 second, sampling frequency=441000 Hz, bits/sample=16

8 years ago | 2 answers | 0

2

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Question


how to calculate bit rate of audio signal in MATLAB?
CompressionMethod: 'Uncompressed' NumChannels: 2 SampleRate: 44100 TotalSamples: 1264896 ...

8 years ago | 2 answers | 0

2

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Question


if I am getting the 0.7466 ,0.6646 as compression ratio of audio fles and 26% and 34% as the saving percentage,is it best compression ratio or I have to improve it?
I have done this using burrows wheeler transform ,huffman encoding and decoding of huffman,burrows wheeler transform?

8 years ago | 1 answer | 0

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Question


In the following plots I want to cut out the lower part of output signal from 0.0002 to 0.001 so that I can make my output signal appear clear so that I can make out difference between input and output signal?
<</matlabcentral/answers/uploaded_files/35222/input.jpg>> << <</matlabcentral/answers/uploaded_files/35220/output.jpg>> ...

8 years ago | 1 answer | 0

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Question


How can I change the x-axis limit of recovered signal so that it becomes equal to x axis limit of input sampled sequence?following plots are as follows?
<</matlabcentral/answers/uploaded_files/35089/a.jpg>> <</matlabcentral/answers/uploaded_files/35090/b.jpg>>

8 years ago | 1 answer | 0

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Question


can someone provide me the code for conversion of audio files usually .wav to text files using Burrows Wheeler Transform encoder?
code for this?

9 years ago | 0 answers | 0

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Question


how to convert text files into audio files while decoding in MATLAB? I am unable to get the recovered data size ?
BWT DECODING: [y,Fs]=audioread('alarmnew1.wav'); file_read=resample(y,1,44100); byte_size_of_sampled_signal=getByteSi...

9 years ago | 0 answers | 0

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Question


what does 'b' denote in this code.please tell me I am cofused with it?
[y,Fs]=audioread('alarm456.wav'); file_read=resample(y,1,44100); byte_size_of_sampled_signal=getByteSize(file_read); file_o...

9 years ago | 1 answer | 0

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Question


how to find compression ratio of a signal?
sampled signal=4.1965(1/e36) compressed signal=1.3530(1/e35) its size is 80KB and 8192 is its sampling frequency....

9 years ago | 1 answer | 0

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Question


how to find the compression ratio of this ?please reply(its a audio file having sampling frequency of 8192 Hz)
if byte_size_of_sampled_signal = 7.1578e-42 and byte_Size_of_compressed_data = 1.3806e-41

9 years ago | 1 answer | 0

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Question


what will be the value of Variable must I put in this code to run it.pl help me out ?
function b = getByteSize(theVariable, returnType, fid) % getByteSize returns the mem.usage of the provided variable(theVari...

9 years ago | 1 answer | 0

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