microphone level control

[LV2020]

Hi everyone,

I am  a new LabView user. I have a testing equipment that uses USB-8451 USB to SPI Interface. And I am trying to adjust the microphone (Audio device) level to 100%. How do I do that?

[wiebe@CARYA]

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@LV2020 wrote:

Hi everyone,

I am  a new LabView user. I have a testing equipment that uses USB-8451 USB to SPI Interface. And I am trying to adjust the microphone (Audio device) level to 100%. How do I do that?

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The audio device of the PC?

Or is the SPI device an audio device? If so, that might be a question for the chip manufacturer. At least, we would need a SPI device number, AFAIK. It's probably in the chip specification as well.

[LV2020]

When I connect the test equipment to the PC, it is displayed under Audio inputs and outputs in device manager. It also displayed under sounds, recording tabs. Please see attachments. The testing equipment is using USB-8451.

[cdiaz95]

Hey jbaqadi, 

    Is the USB 8451 being recognized as an audio device?

     Or are you going to communicate with a device that has an SPI interface with the USB 8451?

If it's the first one, make sure to have the 845x driver installed on your computer. 

[LV2020]

cdiaz95

When I connect the testing equipment to the PC, device manager displays the following:

1. Under "Audio inputs and outputs" : Microphone (6- USB Audio Device).

2. Under NI-845x Device: NI USB-8451.

see attachment 

I already installed 845x drive. 

The first step I did is being sure labView is recognizing the USB connection, but I do not know which functions test the microphone level. 

[wiebe@CARYA]

What do you expect to happen when you adjust the audio levels of the USB-8451?

AFAIK, the USB-8451 is not a sound device. I don't think it will do much good.

[bseguin]

Please see this web page

http://www.ni.com/en-ca/support/model.usb-8451.html

This is not an audio Device... There is no microphone in that USB device.

Benoit

[LV2020]

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wiebe@CARYA wrote:

What do you expect to happen when you adjust the audio levels of the USB-8451?

AFAIK, the USB-8451 is not a sound device. I don't think it will do much good.

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I have butter understanding now. 

Basically my test equipment have USB-8451 and an audio device (microphone AK5370). 

I was able to get my LabView to recognize USB-8451 by installing theNI- 845x.

Now I need to test the microphone level for AK5370. There's is no driver related to AK5370. How would I test the microphone sound level for an audio device that does not have driver in LabView. Is it possible?  

[LV2020]

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@bseguin wrote:

Please see this web page

http://www.ni.com/en-ca/support/model.usb-8451.html

This is not an audio Device... There is no microphone in that USB device.

Benoit

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I have butter understanding now. 

Basically my test equipment have USB-8451 and an audio device (microphone AK5370). 

I was able to get my LabView to recognize USB-8451 by installing theNI- 845x.

Now I need to test the microphone level for AK5370. There's is no driver related to AK5370. How would I test the microphone sound level for an audio device that does not have driver in LabView. Is it possible?  

[bseguin]

Unfortunately, there is no native way in LabVIEW to set the volume of a microphone.

I suggest you to read the documentation of the audio device that you have. They might have a .dll to do. If not, you will need a wrapper from .net to LabVIEW.

Benoit