M-Audio DELTA 44 — проблемы с записью звука и графической производительностью [36/39]

Possible Cause 3: Some accelerated graphics cards use excessive

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

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

Problem: The sound from the monitor mixer is muffled. It sounds as if it

were running through a mixer with the treble control turned all the way down!

Possible Cause: The current Delta 44 sample rate is too low. The

monitor mixer is a digital device that runs at the current sample rate of the

Delta 44 board. The frequency response of the mixer is roughly one-half

of the sample rate. There is no way to prevent this lost frequency response

while playing back or recording at a low sample rate. However, it may be

prevented when the system is idle. See the “CODEC SAMPLE RATE”

paragraph of the section ‘Hardware Settings Page’ for more information.

Appendix A - Technical Specs

Analog Audio

Peak Analog Input Signal: +14dBu (+4dBu setting),

+6dBV (Consumer setting),

0dBV (-10dBV setting).

Peak Analog Output Signal: +14dBu (+4dBu setting),

+6dBV (Consumer setting).

0dBV (-10dBV setting)

Measured Dynamic Range:

Outputs: 103dB (a-weighted),

Inputs: 99dB (a-weighted)

Measured THD (at 0dBFS):

Outputs: less than 0.0015%,

Inputs: less than 0.0024%

Measured Frequency Response: 22Hz - 22kHz, -0.3,-0.2dB

Input Impedance: 10k ohms minimum

Input Connectors: 1/4” female TRS-type, balanced or unbalanced

Output Connectors: 1/4” female TRS-type, balanced or unbalanced

Adapter Resource Requirements

IRQ: One required

I/O Addresses: Four blocks: 32, 16, 16, and 64 bytes

DMA Channels: None required