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Testing audio latency of modern operating systems
Hi all!
I would like to test the audio latency value for the various operating systems trying to modify also their hardware configuration (i.e. CPU, memory, sound card...). Could you kindly suggest me a method to do this type of tests? Obviously I'm able to make a software for example in C++ in order to do the audio latency measurements. But what about experimental setup? What I have to do? Thanks in advance! |
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In article znr1108128396k@trad, Mike Rivers wrote:
In article writes: I would like to test the audio latency value for the various operating systems trying to modify also their hardware configuration (i.e. CPU, memory, sound card...). I do this with a dual channel oscilloscope - a real one, not a PC program. I connect a generator to the input and one channel of the scope, and the output to the other channel of the scope. I put in a pulse waveform and look at the time difference between when it goes in and comes out. Simple and realistic. I find if you are looking for a really accurate measurement, though, lissajous method is best. Adjust the pulse repetition rate until the two outputs are 180' out of phase, then use the pulse rate to calculate the latency. Much more precise than the ruler-on-the-grid method. --scott -- "C'est un Nagra. C'est suisse, et tres, tres precis." |
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