transforming matrix values and passing it into fucntion

Hello,

I'm a MATLAB beginner and face quite an issue on a assignment. The goal of the assignement is to create music with functions the professor gave us. I managed to create a quite simple melody, but I would like to tackle something more complex: I wrote a simple melody in MIDI, openned it with a text editor and now I have a matrix of MIDI codes for the notes.

Now, the first step would be to translate those MIDI codes to frequencies: I know that . I want to create a vector/matrix containing the midicodes passed through this formula, and I can't seem to find the way to do it.

The next (and final?) step would be to pass those codes into the teachers function. It's called newsound(), and takes as an argument a frequency. It then creates the sound by adding one by one the frequency components, and other utility stuff.

Now, what I need to pass into the soundsc() function of MATLAB is the result of newsound() of all the individual frequencies in a matric called S. This is what I mean:

Let's say f[i] is the vector/matrix containing the frequencies translated from MIDI.
S is a 1*n sized matrix, 1 being the column, and n being the amount of frequencies.
S1= newsound(f1)
S2=newsound(f2)
......
Sn=newsound(fn)

Then, it is simply a matter of plugging S into soundsc with a given sampling frequency.

I would appreciate any help, thanks!

Answer 1

[Harsha Priya Daggubati]

Hi,

I think you can just use the midicodes matrix you have in the formula for frequency you already mentioned, as far as I know that works fine. You can use the frequency matrix thus populated in your newsound function.