Interconnecting voices in XAudio2.
Wed, 16 Jul 2008 14:11:01 -0700
I am trying to hook up multiple SourceVoices into one SubmixVoice. The
SourceVoices can each have one or more channels. The SubmixVoice should treat
each of these SourceVoice inputs a separate channels so the net effect is
that the SubmixVoice will output as many channels as the total number of
channels in i ...
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Capture Audio from Sound Card
Tue, 15 Jul 2008 14:50:51 -0700 (PDT)
Hi All,
I am pretty new to DirectX, but found some good tutorials relating to
DirectSound at VB2008. I followed along and was able to capture audio
from my microphone, but I want to capture the audio from the sound
card output (streaming internet radio for example). Is there a way
that the device capture ca ...
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Convert WAVE_FORMAT_IEEE_FLOAT to WAVE_FORMAT_PCM
Fri, 11 Jul 2008 10:36:00 -0700
Hello All,
I have audio DSP plug-in.
I am getting WAVE_FORMAT_IEEE_FLOAT data from WMA Decoder (wmadmod.dll) in
Vista. I want WAVE_FORMAT_PCM.
Graphedit shows WMADecoder (wmadmod.dll) supports WAVE_FORMAT_PCM &
WAVE_FORMAT_IEEE_FLOAT on its output pin.
If I accept WAVE_FORMAT_IEEE_FLOAT then DSP plug ...
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DirectSoundCreate(NULL, ...) fails after re-plugging in default de
Thu, 10 Jul 2008 23:07:00 -0700
Hi,
I have an application that is enumerating all sound devices and then calls
DirectSoundCreate on each device to find its speaker configuration. it works
fine apart from if I unplug the current default device (as listed in the
control panel), wait a while connect it again. When I now call
DirectSoundCre ...
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How to let sysaudio.sys to recognize avssamp filter's audio pin?
Tue, 8 Jul 2008 01:11:02 -0700
I develop my a/v driver base on WDK 6000 src/avstream/avssamp. In the sample,
the filter has two output pins, one is video pin, another is audio pin.
After install the driver, I can find this filter appears under "video
capture source" of Graphedit.exe. I wonder know whether it possible to let
audio pin also ...
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How to set SCMS on S/PDIF output ?
Tue, 08 Jul 2008 11:16:13 +0900
Hi all,
I am searching the way of setting SCMS.
A sound driver have KSPROPERTY_AUDIO_COPY_PROTECTION.
typedef struct {
BOOL fCopyrighted;
BOOL fOriginal;
} KSAUDIO_COPY_PROTECTION, *PKSAUDIO_COPY_PROTECTION;
However , Audio render don't have I/F for this property.
Microsoft wrote 'Digit ...
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16-bit PCM wave files
Mon, 7 Jul 2008 19:05:01 -0700
How can tell if the sound data are in little-endian or big-endian?
How to tell if a PCM format uses integers or floating point?
Isn't it important for a player like WMP to know what kind of wave data it
needs to interpret before playback? If so, then how does it know what kind of
PCM type it's dealing with ...
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[XAudio2] Mapping channel indices to speakers
Fri, 4 Jul 2008 14:23:15 +0100
In XAudio2, does the mastering voice map channels to speakers in the order
they appear in the header file? I can't actually find documented what the
'meaning' of, say, the third input channel to the mastering voice is. Going
by the order in the header, it would be the LFE for a 2.1 setup, or the back
left fo ...
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Re-mixing filter?
Fri, 27 Jun 2008 03:51:01 -0700
Hi,
I would like the use of a general audio re-mixing filter. It should be able
to resample the sample rate, as well as re-mix channels.
I've begun to write my own, I did resampling no problem (as supreme quality
is not necessary and simple linear filtering sounded OK to my ears).
I started writing th ...
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IBasicAudio interface not working on windows Vista
Mon, 23 Jun 2008 23:26:13 -0700 (PDT)
HI All,
I have made an directshow transform filter for MPEG contents.In that
filter i am using IBasicAudio interface for knowing the WMP volume
levels through put_Volume and get_volume functions for my application.
This application is running fine in Windows XP but when i am trying to
RUN it on VIST ...
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