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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Ahh, read is a generic method and you’re getting type inference
from C# but not IronPython. IronPython 2.6 includes type inference on generic
methods so this might just work there, but otherwise I think you can do:<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>print
buffer.Read[Single](sample, 0, True)<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>The
square brackets are how we specifiy generic type parameters.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div style='border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in 4.0pt'>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
users-bounces@lists.ironpython.com [mailto:users-bounces@lists.ironpython.com] <b>On
Behalf Of </b>Daniel D.<br>
<b>Sent:</b> Wednesday, November 04, 2009 12:48 PM<br>
<b>To:</b> users@lists.ironpython.com<br>
<b>Subject:</b> Re: [IronPython] Reproducing an C# array of floats<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'>Hi Dino, thanks for the quick reply.<br>
<br>
Now I'm using System.Single instead float but the error persists.<br>
<br>
For some reason the Read (ref. http://is.gd/4Ngjt) method of SlimDX.DirectSound.CaptureBuffer
isn't accepting the array reference properly.<br>
<br>
Maybe I should try the Microsoft.DirextX.DirectSound lib, but it's been a
little bit difficult to find good references about IronPython+DirectSound
(probably by own fault).<br>
<o:p></o:p></span></p>
<div class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>
<hr size=2 width="100%" align=center id=stopSpelling>
</span></div>
<p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'>From: dinov@microsoft.com<br>
To: users@lists.ironpython.com<br>
Date: Wed, 4 Nov 2009 20:20:35 +0000<br>
Subject: Re: [IronPython] Reproducing an C# array of floats<o:p></o:p></span></p>
<div>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>float in Python is actually double in C#. You probably
want:</span><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> </span><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>from System import Single</span><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> </span><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>System.Array.CreateInstance(Single, …)</span><span
style='font-size:10.0pt;font-family:"Verdana","sans-serif"'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> </span><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>And so on.</span><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> </span><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> </span><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'><o:p></o:p></span></p>
<div style='border:none;border-left:solid windowtext 1.5pt;padding:0in 0in 0in 4.0pt;
border-color:-moz-use-text-color -moz-use-text-color -moz-use-text-color blue'>
<div>
<div style='border:none;border-top:solid windowtext 1.0pt;padding:3.0pt 0in 0in 0in;
border-color:-moz-use-text-color -moz-use-text-color'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
users-bounces@lists.ironpython.com [mailto:users-bounces@lists.ironpython.com] <b>On
Behalf Of </b>Daniel D.<br>
<b>Sent:</b> Wednesday, November 04, 2009 12:12 PM<br>
<b>To:</b> users@lists.ironpython.com<br>
<b>Subject:</b> [IronPython] Reproducing an C# array of floats</span><span
style='font-size:10.0pt;font-family:"Verdana","sans-serif"'><o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'> <o:p></o:p></span></p>
<p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'>Hi all,<br>
<br>
Sorry for the silly question. I'm quite new to ironpython and I've been trying
to solve this issue for the last 3 hours.<br>
<br>
I'm not able to reproduce this code in IronPython. <br>
<br>
float[] sample = new float[8192/sizeof(float)]<br>
<br>
I've tried the following but nothing seems to work in my specific case:<br>
<br>
System.Array.CreateInstance(float, (8192/4))<br>
clr.Reference[System.Array[float]](8192/4)<br>
System.Array[float]([(8192/4)])<br>
<br>
I'm trying to use the SlimDX to capture the microphone input, and pass it to
NumPy to do same FFT stuff.<br>
<br>
The original C# code is here:
http://crsouza.blogspot.com/2009/08/capturing-sound-from-microphone-using.html<br>
<br>
And here my modified version<br>
<br>
import clr<br>
<br>
clr.AddReference('SlimDX')<br>
from SlimDX import *<br>
from System import *<br>
<br>
captureDevice = DirectSound.DirectSoundCapture()<br>
waveFormat = Multimedia.WaveFormat()<br>
<br>
waveFormat.FormatTag = Multimedia.WaveFormatTag.IeeeFloat # For Int16, change
to Pcm<br>
waveFormat.BitsPerSample = 32 # Floats are 32 bits<br>
waveFormat.BlockAlignment = (waveFormat.BitsPerSample/8)<br>
waveFormat.Channels = 1<br>
<br>
waveFormat.SamplesPerSecond = 44100<br>
waveFormat.AverageBytesPerSecond =
waveFormat.SamplesPerSecond*waveFormat.BlockAlignment*waveFormat.Channels<br>
<br>
<br>
bufferDescription = DirectSound.CaptureBufferDescription()<br>
bufferDescription.BufferBytes = 8192<br>
bufferDescription.Format = waveFormat<br>
bufferDescription.WaveMapped = False<br>
<br>
buffer = DirectSound.CaptureBuffer(captureDevice,bufferDescription)<br>
buffer.Start(True)<br>
<br>
#float[] sample = new float[8192/sizeof(float)];<br>
#sample = Array.CreateInstance(float, (8192/4))<br>
#sample = clr.Reference[Array[float]](8192/4)<br>
sample = Array[float]([(8192/4)])<br>
<br>
while (True):<br>
#print sample <br>
print buffer.Read(sample, 0, True); <br>
<br>
<br>
.... which is generating the following error<br>
<br>
<br>
C:\Documents and Settings\Administrator\My Documents>ipy
sound_capture_test.py<br>
Traceback (most recent call last):<br>
File "sound_capture_test.py", line 34, in
sound_capture_test.py<br>
TypeError: Read() takes at least 2147483647 arguments (3 given)<br>
<br>
<br>
<br>
Any help will be very appreciated. <br>
<br>
Thanks,<br>
Daniel<br>
<br>
<o:p></o:p></span></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>Windows
Live Hotmail: <a
href="http://www.microsoft.com/middleeast/windows/windowslive/see-it-in-action/social-network-basics.aspx?ocid=PID23461::T:WLMTAGL:ON:WL:en-xm:SI_SB_4:092009"
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