Musical Notes: music.tone2freq(T) - File Exchange

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Highlights from
Musical Notes

music.freq2cent(f1,f2) MUSIC.FREQ2CENT Returns the number of cents between two frequencies.
music.freq2interval(f,key) MUSIC.FREQ2INTERVAL Returns the interval and octave of a frequency.
music.freq2note(f) MUSIC.FREQ2NOTE converts a frequency to a note string.
music.freq2tone(f) MUSIC.FREQ2TONE converts a frequency to a musical semitone.
music.interval2freq(I,O,key) MUSIC.INTERVAL2FREQ returns the frequency of a musical interval.
music.interval2note(I,O,key,a... MUSIC.INTERVAL2NOTE returns a note string in scientific pitch notation.
music.interval2tone(I,O,key) MUSIC.INTERVAL2TONE returns the absolute musical semitone of an interval.
music.note2cent(N1,N2) MUSIC.NOTE2CENT Returns the number of cents between notes.
music.note2freq(N) MUSIC.NOTE2FREQ Converts a scientific pitch note to a frequency.
music.note2interval(N,key) MUSIC.NOTE2INTERVAL Converts a note string to a semitone interval and octave.
music.note2tone(N) MUSIC.NOTE2TONE Converts a scientific pitch note to a tone relative to C4.
music.tone2cent(t1,t2) MUSIC.TONE2CENT Returns the number of cents between two semitones.
music.tone2freq(T) MUSIC.TONE2FREQ converts a musical semitone to a frequency.
music.tone2interval(T,key) MUSIC.TONE2INTERVAL Returns the interval and octave of notes in a key.
music.tone2note(T,accsym) MUSIC.TONE2NOTE Converts a musical semitone to a character note.
examples.m
Music function examples
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from Musical Notes by Eric Johnson
Collection of functions for working with musical notes, intervals, frequencies, and cents.

music.tone2freq(T)

function f = tone2freq(T)
% MUSIC.TONE2FREQ converts a musical semitone to a frequency.
%    F = MUSIC.TONE2FREQ(T) converts the musical semitones in T to frequencies.
%
%    Example
%       f = music.tone2freq(0:2);  % returns [261.63  277.19  293.67]
%
%    See also music.tone2interval, music.tone2note, music.freq2tone.

%    Author: E. Johnson
%    Copyright 2010 The MathWorks, Inc.


fC4 = 261.625565300599;  % Middle C (C4) is 261.63 Hz

f = fC4 .* 2 .^ (T / 12);

Highlights from Musical Notes

Highlights from
Musical Notes