myRIO USB host port - microphone

[roland@INM]

Does the USB host port of the myRIO support a digital microphone, i.e. a microphone which delives the signal in digital form via USB?

Can the signal be forwarded into the FPGA directly for filtering and subsequent output to the Audio Out?

[jorgemondadori]

on the RT you may do that. installing drivers or using visa, depending on the output and interface of you mic.

on FPGA probably not, since you wont have access to operational system to control you USB device. for that you can use audio in

[Bob_Schor]

My understanding is that a USB Microphone contains an internal A/D converter that creates sound to a digital stream of some type.  Windows PCs have sound drivers and application software that know and understand these formats.

The myRIO, on the other hand, has dedicated A/D converters to convert audio waveforms into sampled LabVIEW Waveforms.  If your only microphone is a USB microphone, you might be able to plug the microphone into a PC, use "recording software" on the PC to "listen to" the microphone and "play" it out throough the PC's speakers (just to prove to yourself that you are "hearing" the microphone), then tell the PC to play the sound out through the Headphone Jack, and finally take the voltages from the Headphone jack into the audio inputs on the myRIO (thereby making the PC a D/A converter to "undo" the A/D converter built into the USB microphone.

Or simply purchase a non-USB microphone instead.

Bob Schor

[jorgemondadori]

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@Bob_Schor  escreveu:

Or simply purchase a non-USB microphone instead.

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Looks boring...