M-Audio AUDIOPHILE USB Инструкция по эксплуатации онлайн [19/36] 7319

Problem: Repetitious Sound.

Possible Cause: An IRQ resource conflict with the USB controller and

another device (PC only).Often this will result in a small segment of sound

(0.5 to 1 second) repeating itself over and over, sometimes completely

locking up the computer. See the general troubleshooting suggestions at

the beginning of this section.

• Problem: I’m getting some pops and clicks in my audio recording.

• Possible Cause 1: Input levels are too “hot,” causing clipping or input

distortion. Make sure you have the proper signal levels coming from your

source audio device,and lower the output if necessary.The incoming levels

may be easily viewed from the Audiophile USB Control Panel peak meters.

• Possible Cause 2:Your application software may not have the proper

audio buffer sizes set.Each software application handles this differently,but

typically there is somewhere in the software’s setup to set the size of the

playback and recording buffers used by the application. Some applications

also require you to run a calibration (sometimes called “profiling”) the first

time you use the software with a new audio interface. For instance, if the

clicks are present when using Cakewalk SONAR,then try to run SONAR's

Wave Profiler.

• Possible Cause 3: Some accelerated graphics cards use excessive

amounts of system bandwidth,preventing the recording buffer of an audio

interface from keeping up with demand. This can cause clicks in the

recording.Reducing or turning off the graphics card’s graphics acceleration

feature often resolves this problem. In Windows, the level of graphics

acceleration is accessed from Start | Settings | Control Panel | System |

Performance | Graphics.

Problem: My software application keeps telling me “sample rate not

supported” or some similar message.

Possible Cause:This would most likely occur if you were trying to select

96000Hz as a sample rate, and the Maximum Sample Rate available from

the Audiophile USB Control Panel is 48000. Open the control panel, and

uncheck the Active Port boxes until you have only one port selected for

either input or output.