Want to protect your cyber security and still get fast solutions? Ask a secure question today.Go Premium

x
?
Solved

Controlling recording Input level

Posted on 1997-10-27
4
Medium Priority
?
196 Views
Last Modified: 2013-12-03
I want to control the input (gain) level from the microphone. I've looked through the Window's API and see nothing for doing this. I've manually set the mic recording level to it's highest position and set the mic boost check box in the volume control dialog, but the recording is still way too low. On the Mac, I can set either an automatic gain control or set the recording level manually. I've tried several types of mic's and visited the jumpers for the sound card but nothing helps. If you speak 4 feet from the mic and in a normal volume you cannot clearly hear the audio. I'm recording speech in a quiet location and need high input gain.
0
Comment
Question by:RadNetGML
  • 2
  • 2
4 Comments
 

Author Comment

by:RadNetGML
ID: 1407925
Edited text of question
0
 
LVL 23

Accepted Solution

by:
chensu earned 300 total points
ID: 1407926
You can use Win32 Audio Mixers API (mixer*() functions) to control it. There is a sample "Mixapp: Sample Mixer Application" that comes with Win32 SDK.
0
 

Author Comment

by:RadNetGML
ID: 1407927
The specific calling order for the mixer and what api for the
input volume would of been great. Thanks for pointing me in the
right direction.

0
 
LVL 23

Expert Comment

by:chensu
ID: 1407928
1. mixerOpen()
2. mixerGetLineInfo() (MIXERLINE_COMPONENTTYPE_DST_WAVEIN or MIXERLINE_COMPONENTTYPE_SRC_MICROPHONE)
3. mixerGetLineControls() (MIXERCONTROL_CONTROLTYPE_VOLUME)
4. mixerSetControlDetails()
5. mixerClose()

0

Featured Post

Become an Android App Developer

Ready to kick start your career in 2018? Learn how to build an Android app in January’s Course of the Month and open the door to new opportunities.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article surveys and compares options for encoding and decoding base64 data.  It includes source code in C++ as well as examples of how to use standard Windows API functions for these tasks. We'll look at the algorithms — how encoding and decodi…
As more and more people are shifting to the latest .Net frameworks, the windows presentation framework is gaining importance by the day. Many people are now turning to WPF controls to provide a rich user experience. I have been using WPF controls fo…
This is Part 3 in a 3-part series on Experts Exchange to discuss error handling in VBA code written for Excel. Part 1 of this series discussed basic error handling code using VBA. http://www.experts-exchange.com/videos/1478/Excel-Error-Handlin…
Whether it be Exchange Server Crash Issues, Dirty Shutdown Errors or Failed to mount error, Stellar Phoenix Mailbox Exchange Recovery has always got your back. With the help of its easy to understand user interface and 3 simple steps recovery proced…

581 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question