matrix calculations matlab

Question

I have a 3x3 matrix as follows

ls 1 2 3 mic 1 d11 d12 d13 mic 2 d21 d22 d23 mic 3

where the matrix elements define distance between each component e.g. d11 is the distance between microphone 1 (mic 1) and loudspeaker 1 (ls 1).

each ls has a a specific gain value as follows 3x1

g1 // ls1 g2 // ls2 g3 // ls3

How would I divide each gain value to the corresponding elements within the distance matrix e.g. g1/d11, g1/d21 and g2/d12 ,g2/d22 etc and then store the values within a results matrix.

thanks

Shai · Accepted Answer · 2013-04-06 20:40:14Z

3

use bsxfun

res = bsxfun(@rdivide, gain_vec(:)', dist_matrix);

answered Apr 6, 2013 at 20:40

Shai

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3 Comments

fpe Over a year ago

it's enough calling just bsxfun(@rdivide, gain_vec', dist_matrix)

Shai Over a year ago

@fpe, since the matrix is square I wanted to make sure the division is carried out on the proper dimension - never too careful with these things...

fpe Over a year ago

you are right, you posted the answer in the meanwhile I was checking the two ways, asserting that both lead to the same results.

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