We help IT Professionals succeed at work.

MCI -redirecting sound from one device to another

yakky
yakky asked
on
Medium Priority
298 Views
Last Modified: 2013-11-20
Can anyone tell me how to redirect the output of the microphone, from one device to another?

Details:
I can record a 'wav' file and then immediately play that down the phone, using mciSendCommand(..,MCI_RECORD,...) and MCI_PLAY. How ever this creates a time delay, I would like to send the output of the microphone directly to this device, has anyone any idea how to do this?

Thanks in advance
Yakky
Comment
Watch Question

Commented:
Here's a suggestion: look at the DirectShow SDK (it's available on the Microsoft web site at http://www.microsoft.com/directx/pavilion/dshow/default.asp

It is an object-oriented streams architecture that superscedes MCI. What you'll need to do is write a DirectShow filter that sends packets of audio data to your phone device. This will probably be done at a lower level than using mciSendCommand. Then hook the output of the Audio Capture DirectShow filter into the input of your custom filter. This should forward the data on with minimal delay (~10-50 ms, perhaps).

Not the solution you were looking for? Getting a personalized solution is easy.

Ask the Experts

Author

Commented:
Thanks for the suggestion. I had my suspisions that I would need to do some lower level programing. I was hoping there would be an easy way of doing it. Still I hadnt thought of using direct X.
Many Thanks
Yakky
Access more of Experts Exchange with a free account
Thanks for using Experts Exchange.

Create a free account to continue.

Limited access with a free account allows you to:

  • View three pieces of content (articles, solutions, posts, and videos)
  • Ask the experts questions (counted toward content limit)
  • Customize your dashboard and profile

*This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

OR

Please enter a first name

Please enter a last name

8+ characters (letters, numbers, and a symbol)

By clicking, you agree to the Terms of Use and Privacy Policy.