I'm on Vista Home Premium 32bit with all the latest updates. When I open Windows' Volume Mixer I get all the settings offered by my soundcard, so everything looks like it's correctly installed I never had any audio problem anyway, no lagging, no crakling. If I select MME my soundcard correctly shows in the recording device. Someone suggested that Sound Mapper could be the cause and so started my quest for information. Ok, I think I've added all the information that was missing from my original post.
I don't know if it makes things clearer? The noise at khz could just be noise shaping from your sound card's ADC. Last Edit : by bennetng. The spectrum looks fine. If there was upsampling going on, you'd see a cutoff at 22 or 24 with possibly a partial mirror image above it. I think the device selection is done in the listbox below for each channel.
To verify bit recording, record silence and zoom in time to ratio at higher zoom factors Forge may use a peaks file of lower bit depth and vertically using Shift-UpArrow. In case of 16 bits, you will see a stepped waveform and read 0,, or close to those sample values on the Levels toolbar. Quote from: bennetng on Quote from: DVDdoug on Quote from: j7n on Quote from: Psychotic Unicorn on However, it isn't really a driver, but a virtual device installed automatically with Windows, which simply results in your application using whatever default devices you've already chosen for both sound recording and sound playback in the Control Panel's 'Sounds and Audio Devices' applet.
It can be handy to select Sound Mapper in your audio application to enable an audio interface to run audio files at sample rates other than those the interface supports. However, if you choose Microsoft's Sound Mapper, it will use Microsoft's various codecs coder-decoder algorithms to convert this sample rate and bit-depth on-the-fly to one that is supported by your interface. In days of old, Sound Mapper could also be used to play back bit files on 8-bit only soundcards, or stereo files on mono-only soundcards.
This is certainly handy in an emergency, but except in these special cases choosing Sound Mapper can cause problems, because it may continue performing sample-rate conversion without telling you, even on files directly supported by your soundcard. Since no conversion is percent perfect, this results in a reduction in audio quality, and some users have even reported clipping and drop-out problems after selecting it for playback.
When using your computer, you may find some unfamiliar applications and services. This may make you feel panic. Besides, you may also encounter Microsoft Sound Mapper. Actually, it is not harmful. It may also appear if you install a new audio interface. However, it is not a real driver but a virtual device that is installed with Windows This can let your app use any default device you have selected for sound playback and recording in Control Panel.
Selecting Sound Mapper in your audio program is handy and it can allow an audio interface to run audio files at sample rates except those the interface supports. Microsoft Sound Mapper is an entirely safe and necessary driver on the PC. This may cause your audio device to not work.
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