How to select elements from matrix?
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For the below code we will get 53440*8 matrix.
fid = fopen( 'audio.wav');
data = fread(fid, [1, Inf], 'uint8');
fclose(fid);
bit = uint8(rem(floor((1 ./ [128, 64, 32, 16, 8, 4, 2, 1].') * data), 2));
bit = bit(:);
bit = dec2bin(data) - '0'
Now I want to select 8*8 elements from the matrix.
How can I do that?Please help me out.
Thank you!
3 个评论
dpb
2019-4-27
data = fread(fid, [1, Inf], 'uint8');
bit = uint8(rem(floor((1 ./ [128, 64, 32, 16, 8, 4, 2, 1].') * data), 2));
bit = bit(:);
bit = dec2bin(data) - '0'
What's the point of lines 2 and 3 when you immediately then overwrite the result?
Any 8x8 set of elements or some particular set(s)???
N M Channabasavayya
2019-4-27
dpb
2019-4-27
N=8; % how many (if not necessarily 8 rows)
i1=1; % set first index
i2=i1+N-1; % compute last row index
B=bit(i1:i2,:); % and select those rows, all columns
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2019-4-27
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