1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
|
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
<HTML>
<HEAD>
<TITLE>WAVPLAY
</TITLE>
</HEAD>
<BODY>
<H2>WAVPLAY
</H2>
<P>
Section: <A HREF=sec_io.html> Input/Ouput Functions </A>
<H3>Usage</H3>
Plays a linear PCM set of samples through the audio system. This
function is only available if the <code>portaudio</code> library was available
when FreeMat was built. The syntax for the command is one of:
<PRE>
wavplay(y)
wavplay(y,sampling_rate)
wavplay(...,mode)
</PRE>
<P>
where <code>y</code> is a matrix of audio samples. If <code>y</code> has two columns, then
the audio playback is in stereo. The <code>y</code> input can be of types
<code>float, double, int32, int16, int8, uint8</code>. For <code>float</code> and
<code>double</code> types, the sample values in <code>y</code> must be between <code>-1</code> and
<code>1</code>. The <code>sampling_rate</code> specifies the rate at which the data is
recorded. If not specified, the <code>sampling_rate</code> defaults to <code>11025Hz</code>.
Finally, you can specify a playback mode of <code>'sync'</code> which is synchronous
playback or a playback mode of <code>'async'</code> which is asynchronous playback.
For <code>'sync'</code> playback, the wavplay function returns when the playback is
complete. For <code>'async'</code> playback, the function returns immediately (unless
a former playback is still issuing).
</BODY>
</HTML>
|
