Ascending order-room modes (2024)

% Room Mode Calculator RC1

% f = ( c/2 ) * ( sqrt( ((nL/L))^2 + ((nw/w))^2 + ((nh/h))^2 ) )

clear

tic

c = 344 ; % speed of sound (m/s)

fL=zeros(1,9); % initialize vector

fw=zeros(1,9); % initialize vector

fh=zeros(1,9); % initialize vector

w= 2.20 ;

L= 3.50 ;

h= 3.02 ;

% AXIAL MODES

for n = 1: 9

fL(n) = (c/2) * (n/L) ;

fw(n) = (c/2) * (n/w) ;

fh(n) = (c/2) * (n/h) ;

end

% Tangential modes

fLw = zeros(1,4);

fwh = zeros(1,4);

fLh = zeros(1,4);

for nL= 1:4

for nw = 1:4

fLw(nL,nw) = ( c/2 ) * ( sqrt( ((nL/L))^2 + ((nw/w))^2 )) ;

for nh = 1:4

fwh(nw,nh) = ( c/2 ) * ( sqrt( ((nw/w))^2 + ((nh/h))^2 )) ;

fLh(nL,nh) = ( c/2 ) * ( sqrt( ((nL/L))^2 + ((nh/h))^2 )) ;

end

end

end

% Oblique Modes

fLwh = zeros(1,2);

for nL= 1:2

for nw = 1:2

for nh = 1:2

fLwh(nL,nw,nh) = ( c/2 ) * ( sqrt( ((nL/L))^2 + ((nw/w))^2 + ((nh/h))^2 ) ) ;

end

end

end

' AXIAL MODES '

fL

fw

fh

'TANGENTIAL MODES'

fLw

fLh

fwh

'OBLIQUE MODES'

fLwh

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• Link

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  https://www.mathworks.com/matlabcentral/answers/11225-ascending-order-room-modes#answer_15334

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