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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 set on the rear of the

Delta 1010 rack-mount unit. "+4" can handle much hotter signals than "-10." If

you find that you are still clipping at the +4 setting, you will need to turn down

the audio at the source.

Possible Cause 2: If you are recording from the S/PDIF input, but you

have the Delta 1010’s master clock set to something other than the S/PDIF input,

you are recording an out-of-sync S/PDIF stream. This can result in lost or bogus

samples being recorded.

Possible Cause 3: 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 card calibration (sometimes called "profiling") the first time

you use the software with a new audio card.

Possible Cause 4: 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 Start

Problem: I’m getting some pops and clicks in my monitoring signal, even

when my system is idle.

Possible Cause: If the S/PDIF input is not muted in the monitor mixer,

and you have the Delta 1010’s master clock set to something other than the

S/PDIF input, you are monitoring an out-of-sync S/PDIF stream. This can result

in lost or bogus samples being recorded.

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 1010 sample rate is too low. The

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

1010 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.

M-Audio Delta 1010 Manual&Nbsp;

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