[wdmaudiodev] Re: problem with MCStream.exe
- From: "Tim Morris" <montagne75@xxxxxxxxxxx>
- To: wdmaudiodev@xxxxxxxxxxxxx
- Date: Tue, 29 Oct 2002 19:07:50 +0000
Thanx a lot guys...Well, I guess I am crazy!! I guess it's just the fact
that the 3rd value of the left channel is identical to the 2nd of the other
channels that threw me off.
Thanx for your time :-)
Tim.
>From: "Hager, Todd" <THH@xxxxxxxxx>
>Reply-To: wdmaudiodev@xxxxxxxxxxxxx
>To: "'wdmaudiodev@xxxxxxxxxxxxx'" <wdmaudiodev@xxxxxxxxxxxxx>
>Subject: [wdmaudiodev] Re: problem with MCStream.exe Date: Tue, 29 Oct 2002
>10:22:57 -0800
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>
>To make Tom's response easier to see, look at the data in rows of seven
>columns (I hope the email formatting doesn't screw up my illustrative
>example):
>
>c0 c0 c0 c0 c0 c0 c0
>bd b5 b5 b5 b5 b5 b5
>b5 99 99 99 99 99 99
>aa 74 74 74 74 74 74
>9a 53 53 53 53 53 53
>89 41 41 41 41 41 41
>77 44 44 44 44 44 44
>65 .....
>
>All does seem to be fine...
>
>
>-Todd
>
>-----Original Message-----
>From: Tom Eckert [mailto:teckert@xxxxxxxxxxxxxxxx]
>Sent: Tuesday, October 29, 2002 10:09 AM
>To: wdmaudiodev@xxxxxxxxxxxxx
>Subject: [wdmaudiodev] Re: problem with MCStream.exe
>
>
>
>Tim,
>I may not be getting this, but...
>If the seventh b5 is the first (i.e. front left) sample of the third chunk
>that it this case just happens to have the same value as the other channels
>of the second chunk, it all looks OK. i.e. c0 c0 c0 c0 c0 c0 c0 bd b5 b5 b5
>b5 b5 b5 b5 99 99 99 99 99 99 aa 74 74 74 74 74 74 9a 53 53 53 53 53 53 89
>41 41 41 41 41 41 77 44 44 44 44 44 44 65 .....
>- Tom
>
>-----Original Message-----
>From: wdmaudiodev-bounce@xxxxxxxxxxxxx
>[mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx]On Behalf Of Tim Morris
>Sent: Monday, October 28, 2002 6:27 PM
>To: wdmaudiodev@xxxxxxxxxxxxx
>Subject: [wdmaudiodev] problem with MCStream.exe
>
>
>
>Hi folks,
>I am having trouble with the MCStream app that comes with the DDK. If I
>stream 500Hz sine waves on 7 channels (Front left/right, center, lfe, rear
>left/right/center)in 8 bits at 22050Hz , the data that I get from portclass
>in the Source buffer for CopyTo() seems to be correct. I get blocks of 7
>identical samples. However, if I choose a 500Hz sine for the front left
>only
>and 10KHz sines for all other channels, again at 8bits and 22050Hz, I get
>the following data in my first Source buffer supplied to
>CopyTo():
>c0 c0 c0 c0 c0 c0 c0 bd b5 b5 b5 b5 b5
>b5 b5 99 99 99 99 99 99 aa 74 74 74 74
>74 74 9a 53 53 53 53 53 53 89 41 41 41
>41 41 41 77 44 44 44 44 44 44 65 .....
>I see two possible problems with this:
>
>1.Seeing as the left channel is at 500Hz and all the others are at 10KHz, I
>should see the left sample followed by 6 identical samples for each chunk.
>It looks to me that either the first or second chunk has one sample too
>many.(either chunk1 = c0 c0 c0 c0 c0 c0 c0 bd, or chunk2 = bd b5 b5 b5 b5
>b5 b5 b5) 2.If the first chunk is the one with too many samples, then we
>also have the problem that the differing sample is at the end of the chunck
>rather than at the beginning, which means that the rear center is the
>channel that differs from the others which should not be the case. Either
>way this extra sample seems to be making quite a mess. So, am I crazy, or
>is
>the app broken? It would be really useful if this app worked properly.
>Thanx
>for any input. Tim.
>
>
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