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feature extraction on recorded data vs. live data.

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I found this tutorial on feature extration and training using recorded data. https://www.youtube.com/watch?v=VO0d6EuGpO0
What is the difference between recorded data and live data's feature extraction and training? Thanks!!!!

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Accepted Answer

Walter Roberson
Walter Roberson on 8 May 2018
Different routines are used to fetch the data that is used for training. Once the data is obtained, the code is the same.

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Walter Roberson
Walter Roberson on 13 May 2018
The NI PCI and PCIe devices are cards, so they have direct communication with the host including DMA. The NI USB device is external.
Walter Roberson
Walter Roberson on 13 May 2018
That device is for a consumer level mono microphone input, which would be expecting high impedance and about 0.86 volts AC peak-to-peak. Your device is 15 V DC. I do not think it can produce negative voltages, but I am not certain; I do not know enough about how those devices work and I cannot find the specification sheet for that particular device.
At the very least you would have to put it through a resistor to lower the voltage, and I would be concerned about the current capacity.
I do not know. That adapter looks very cheaply made, and I would not trust it for this purpose.

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