How can I sound two signals without them overlapping?

13 views (last 30 days)
Basically I've got two signals I want to sound using the sound(x,Fs) function. Is there any way that I can have the second sound() wait until the first one has finished before playing?

Answers (3)

Dante Ruiz
Dante Ruiz on 15 Jun 2020
y=audioplayer(S1,Fs);
playblocking(y); % Same as play, but does not return control until playback completes.
sound(S2,Fs); % Play Second Sound

Star Strider
Star Strider on 3 May 2015
See if this illustration does what you want:
Fs = 8192; % Sampling Frequency
Len = 2.5; % Length Of Sound (s)
t = linspace(0, 100*pi, fix(Len*Fs)); % Length = 2.5s
S1 = sin(t) + sin(5*t) + sin(15*t);
S2 = sin(15*t) + sin(21*t) + sin(31*t);
soundsc(S1,Fs) % Play First Sound
pause(2.5) % Wait For First Sound To Finish
soundsc(S2,Fs) % Play Second Sound

Chad Greene
Chad Greene on 3 May 2015
You can call sound twice or you can combine the signals. Here's both methods:
tr = load('train');
la = load('laughter');
% play train:
sound(tr.y,tr.Fs)
% then play laughter:
sound(la.y,la.Fs)
% Or, combine arrays:
combined = [tr.y;la.y];
% wait 1.2 seconds:
pause(1.2)
sound(combined,la.Fs)
The pause command is optional--it insets time after the sound before it finishes playing.
  1 Comment
Matt Allen
Matt Allen on 31 Jan 2020
The first example actually does not work in Matlab 2019b. The sounds are played at the same time (at least they are on my system in Windows 10). Good idea about just combining the vectors though. Seems like there should be another way, for example using pause or something, but I haven't been able to do it.

Sign in to comment.

Categories

Find more on Audio I/O and Waveform Generation in Help Center and File Exchange

Tags

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!