Howdy, Stranger!

It looks like you're new here. If you want to get involved, click one of these buttons!

Sign In with Facebook Sign In with Google Sign In with OpenID

Categories

We have migrated to a new platform! Please note that you will need to reset your password to log in (your credentials are still in-tact though). Please contact lee@programmersheaven.com if you have questions.
Welcome to the new platform of Programmer's Heaven! We apologize for the inconvenience caused, if you visited us from a broken link of the previous version. The main reason to move to a new platform is to provide more effective and collaborative experience to you all. Please feel free to experience the new platform and use its exciting features. Contact us for any issue that you need to get clarified. We are more than happy to help you.

how can i test an external device's audio gain using a hardware on pc

i am on a project is that :

i have to test a device's audio gain for per frequency on pc. the person i called told me that it is imposible to use a sound card for both receiving and transmiting voice signals...he told me may be i can use two...

but it is not important to receive voice too...i have to write or use a programme to critize it for per frequency and compare signals...then i find "dynamic signal analyzer" of national instruments...it is good and compatible with labView...

what you suggest me...what hardware i have to use to solve this problem

Comments

  • derekiwiderekiwi Posts: 1Member
    [b][red]This message was edited by derekiwi at 2005-5-19 17:57:35[/red][/b][hr]
    : i am on a project is that :
    :
    : i have to test a device's audio gain for per frequency on pc. the person i called told me that it is imposible to use a sound card for both receiving and transmiting voice signals...he told me may be i can use two...
    :
    : but it is not important to receive voice too...i have to write or use a programme to critize it for per frequency and compare signals...then i find "dynamic signal analyzer" of national instruments...it is good and compatible with labView...
    :
    : what you suggest me...what hardware i have to use to solve this problem
    :

    Hi - to do this in Labview (assuming that you already have the LV development package) you will only need one analogue card for your pc. You can choose a relatively low spec/cost (such as the NI M-Series) card since you are only dealing in voice frequencies. Check www.ni.com to select something, but I would suggest the likes of PCI-6221, which has 8 analogue inputs and 2 outputs. To compare gains I presume you will be measuring two signals - an input and an output from the device under test.

    LV has very good frequency analysis tools and filtering tools, so checking and comparing gains at individual frequencies and displaying some kind a frequency vs gain chart whould not be difficult. LV is very good at this kind of work.

    Cheers,
    DerekS

    Disclaimer: I do not work for NI or any affiliate, but having come from the traditional software C++ and Java background, I just feel that Labview surpasses them all in many respects (and especially real-time) applications.
Sign In or Register to comment.