PLEASE can a AE from NI take a look at my problem. Sound input read behave in strange manner then the buffer size is larger than 2X number of samples to read.

[Coq_Rouge]

Thank you for your answer. It was perhaps somewhat unfair to pop the lid and pour all my frustration on you, as you only tried to help and explain. And it was actually a good explanation. And the first one I have ever got on the problem. Up to now it has more or less been the sound of silence. Then it comes to why the problem occur. I have struggled with this for a long time, since Labview 8.0. And the first persons to take this fairly seriously has been you. DFGray.  But anyway, I hope it can be solved in the 2010 version of Labview somehow.   

[Herbert]

"Sound issue to be solved" is now more than 5 years pending and nothing happens !!!!!

I really think that the sound system of LV on Windows is a shame for NI. People have been complaining and reporting the bugs since these buggy functions were introduced with LV 8.0 and nothing happened.

To hear the bugginess just play NI's example "Sound File to Sound Output", reading the wav-file as one chunk by setting  "Number of Samples/Iteration" = 243'538. Setting his number >20'000 you start to hear the buffers bug becoming more and more obvious as you increase it.

I would really appreciate if finally, after more than 5 years of customers complaining about obviously buggy code, NI would take action and put somebody to sit down and rewrite all sound functions for the windows version of LV!!

Herbert

[Coq_Rouge]

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@Herbert wrote:

"Sound issue to be solved" is now more than 5 years pending and nothing happens !!!!!

I really think that the sound system of LV on Windows is a shame for NI. People have been complaining and reporting the bugs since these buggy functions were introduced with LV 8.0 and nothing happened.

To hear the bugginess just play NI's example "Sound File to Sound Output", reading the wav-file as one chunk by setting  "Number of Samples/Iteration" = 243'538. Setting his number >20'000 you start to hear the buffers bug becoming more and more obvious as you increase it.

I would really appreciate if finally, after more than 5 years of customers complaining about obviously buggy code, NI would take action and put somebody to sit down and rewrite all sound functions for the windows version of LV!!

Herbert

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The sound system introduced in Labview 8.x is a piece of junk. It has never worked properly, And hence trying to fix it will be futile. I think the attitude NI have showed the users of this system is extremely arrogant. Bugs are not fixed. But new ones are instead introduced instead. And the performance is a grief. The Soundsystem in Labview 7.x outperform in many settings the newer system. If NI had showed the customers this attitude in say DAQ applications. They would have been put out of business within months. So way this arrogant attitude against the the users. I think it is some sort of politics. NI fear that some will use sound card instead of expensive NI daq card. It is perhaps correct that a high quality sound card may be as good as some NI card costing 10 or 20 times more. Then compeered at equal terms. But at the same time the sound card has so many limitations like AC coupling total lack of absolute accuracy.  So any commercial application needing absolute accuracy would also need some awkward calibration routines each time the application is used. I do not think many would purchase such a system. But the sound card IO is very important for the hobbyist and in education. I do not know how much money NI have wasted on the stupid EXpress VI concept. That hardly any somewhat skilled Labview programmer would even thinking about using. And every novice do not understand and make a mess out of. But if NI had invested some crumbs of this budget. And used this to develop a decent sound system. It would be well invested money. Presenting bullshit like it is hard to manage this this due to limitations in the window OS is just nonsens. At this site a sound system with decent performance may be downloaded. http://www.zeitnitz.de/Christian/waveio?PHPSESSID=hga9em09bvlbuqsoktfanprhq2

So how hard can be make a decent native sound system. NI DO YOU LISTEN?