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<font face="Courier New">Stéphane,<br>
<br>
Sorry for having explained myself so poorly. The problem with the
macros already available is that in order to save a wavfile in a
single operation, I need to have the whole signal loaded in a
variable. I'm not sure whether it is possible to handle a variable
with about 2 gigasamples (the maximum 16 bit mono file that
Windows allows --a total file size of 4 GB--). This would demand
16 GB just for a single variable.<br>
<br>
I'm pretty sure that problems would arise even with an audio
variable much smaller than that.<br>
<br>
This is the reason why I need to be able to append new audio data
to an existing wave file, so that much less information is handled
</font><font face="Courier New">at a time. Of course this requires
to edit the header to update the file size after the append, but
this is quite easy.<br>
<br>
The tough part is to save three byte numbers, since the existing
mput command supports 1, 2, 4 and 8 byte formats, but not the 3
byte used for 24 bit audio. If there were a native macro or
primitive capable of formatting numbers as 3 byte, it would be
helpful. <br>
<br>
Thanks,<br>
<br>
Federico Miyara </font><font face="Courier New"><br>
<br>
<br>
</font><br>
<div class="moz-cite-prefix">On 17/12/2019 18:37, Federico Miyara
wrote:<br>
</div>
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cite="mid:881003e6-26bc-ecd6-44de-88f1f53db11a@fceia.unr.edu.ar">
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<font face="Courier New">Stéphane,<br>
<br>
wavewrite also supports 3 bytes, but as I commented, I cannot
save, not evem generate huge files, so i must create them by
successive appending, so i needto be able to save 3 byte numbers
directly.<br>
<br>
Thanks anyway.<br>
<br>
Regards,<br>
<br>
Federico Miyara <br>
</font><br>
<div class="moz-cite-prefix">On 17/12/2019 17:15, Stéphane
Mottelet wrote:<br>
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cite="mid:EF0A02A6-D417-489B-907C-7994F6B60FDF@utc.fr">
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<div dir="ltr">Hello </div>
<div dir="ltr"><br>
</div>
<div dir="ltr">I think it is supported in savewave and loadwave.
There was a pb with savewave but fixed by </div>
<div dir="ltr"><br>
</div>
<div dir="ltr"><a
href="https://codereview.scilab.org/#/c/19947/"
moz-do-not-send="true">https://codereview.scilab.org/#/c/19947/</a></div>
<div dir="ltr"><br>
</div>
<div dir="ltr">in 6.0.2</div>
<div dir="ltr"><br>
</div>
<div dir="ltr">S.</div>
<div dir="ltr"><br>
</div>
<div dir="ltr">
<blockquote type="cite">Le 17 déc. 2019 à 20:09, Federico
Miyara <a class="moz-txt-link-rfc2396E"
href="mailto:fmiyara@fceia.unr.edu.ar"
moz-do-not-send="true"><fmiyara@fceia.unr.edu.ar></a>
a écrit :<br>
<br>
</blockquote>
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<font face="Courier New">Dear All,<br>
<br>
While it is possible to create directly a wav file of
reasonable size from Scilab, if the size is very large,
say, 1 Gb,</font><font face="Courier New"> we will</font><font
face="Courier New"> most likely have memory problems.
That's why I'm trying to program a script allowing to
append new audio data to an existing wav file.<br>
<br>
It is simple to save 8 bit, 16 bit and 32 bit samples to a
file. However, 24 bit is also a popular format and Scilab
doesn't seem to support 3 byte integer format, either for
variables and read/write file operations. <br>
<br>
Is there some way to save 3 byte integers other than
creating a specialized routine from scratch?<br>
<br>
Regards,<br>
<br>
Federico Miyara <br>
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