M-Audio AUDIOPHILE USB Инструкция по эксплуатации онлайн [12/36] 7319

If you activate both sets of input and output channels,you will notice that

the 24-bit setting in the Sample Depth column is grayed out and the

“Maximum sample rate” is shown as 48000 Hz.

NOTE: Whenever S/PDIF Input is selected as an Active Port, the

Audiophile is expecting a digital signal at that port and to lock to

the sample rate of that signal. When S/PDIF Input is selected and

there is no signal present at the S/PDIF Input port, or the S/PDIF

signal is not recognized or invalid, the Audiophile USB will not

operate properly. Most likely, you will hear audio from the

Audiophile, but it will be running at an odd sample rate and sound

like it is playing at the wrong speed.

DD/DTS Pass-Thru: Just below the Sample Depth column,you will see

a checkbox labeled,“DD/DTS Pass-Thru.” If you are using a Software DVD

player and wish to send encoded multi-channel audio such as Dolby Digital

or DTS to the Audiophile USB’s S/PDIF output port, then check this box.

If you are only sending stereo audio (standard PCM—not encoded

surround) to the S/PDIF output port during normal operation, then leave

this box unchecked.

If you have this box checked, you can still send stereo digital audio to the

S/PDIF port without any problems.However,you will notice that when the

DD/DTS Pass-Thru box is checked,ONLY the S/PDIF port is active in the

Active Ports column. Unchecking the DD/DTS Pass-Thru box will restore

the port selection to the previous configuration.

Latency: Driver “Latency” can be selected from a range of values shown

in a drop-down list located just below the “Maximum Sample Rate.” The

default setting when the Audiophile is first installed is “Very High.” Because

slower computer systems require larger sample buffers to avoid dropouts

in the audio stream,a higher latency value is often necessary.

How low you will able to set the Latency will depend on several factors,

such as your system’s performance and the performance of the music

program itself.To test your system for lower Latency, try the “very low”

setting first (as shown in the previous screenshot), and if your system

stutters or performance falters,try the next higher setting until the system

performance stabilizes.Once you are satisfied with any of the control panel

settings, click OK to close the Audiophile USB Control Panel.

Version Numbers: The lower left corner the Audiophile USB Control

Panel page displays the ASIO Driver Version, USB Driver Version, and the

Firmware Version numbers currently in use.This is useful when checking

for driver updates on the M-Audio website, or in the event that you need

to call tech support and give them your system information.