nplay

Plays a musical tune given notes and durations. (REQUIRES nsound.m)

Description

NPLAY(music) plays a tune on the speakers using the nsound function to create pitch vectors for each note and MATLAB's sound function to play
the notes on the speakers. Each row of the cell array music represents one note to be played, and the duration to play it. The notes are specified using standard English notation, e.g., C, D#, etc. Supported notes are those recognized by nsound.m. Can you thing of a more convenient write short musical tunes? Contact me.

• MATLAB release: MATLAB 7 (R14)
• Other requirements: nsound.m (also in this category)

[Ekaterina Vinnik]

to avoid clicks in the end and the beginning of each tone, add the following lines:

%% fading the vector to avoid clicks

fadetime=.01; %sec
fadein=0:1/(Fs*fadetime):1;
fadeout=1:(-1/(Fs*fadetime)):0;

y(1:(length(fadein)))=y(1:(length(fadein))).*fadein;

y(length(y)+1-(length(fadein)):length(y))=y(length(y)+1-(length(fadein)):length(y)).*fadeout;

after generating the vector itself
%% --- Create a pitch vector ---

Fs=8100; % Sampling frequency.
t=0:1/Fs:duration;
y=sin(2*pi*f*t);