Bedienungsanleitung Adobe Handleiding Adobe Audition 3.0 (Seite 43 von 294) (Englisch)

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ADOBE AUDITION 3.0

User Guide

filtering small portions of audio. You can enter a value (in milliseconds) in the crossfade time box to specify the

crossfade duration.

Auto-Convert Settings For Paste When pasting different sample formats, Adobe Audition uses these settings when

auto-converting the clipboard to the current sample format.

• Downsampling Quality Level Enter a value from 30 to 1000. Higher values retain more high frequencies while still

preventing the aliasing of higher frequencies to lower ones. A lower setting results in shorter processing time but also

in the roll-off of certain high frequencies, leading to muffled-sounding audio. Because the filter’scutoff slope is much

steeper at higher quality settings, the chance of ringing at high frequencies is greater. Usually values between 80 and

400 are fully satisfactory for most conversion needs. The default value is 80.

• Prefilter Prevents aliasing at downsampling. The prefilter removes all frequencies above the Nyquist limit, thus

keeping them from generating alias frequencies at the low end of the spectrum. In general, select this option for best

results.

• Upsampling Quality Level Enter a value from 30 to 1000. Higher values retain more high frequencies while still

preventing the aliasing of higher frequencies to lower ones. A lower setting results in shorter processing time but also

rolls off certain high frequencies, leading to muffled-sounding audio. Because the filter’s cutoff slope is much steeper

at higher quality settings, the chance of ringing at high frequencies is greater. Values between 100 and 400 address

most conversion needs. The default value is 120.

UseahigherUpsamplingQualityLevelvaluewheneveryoudownsamplefromahighsampleratetoalowrate.For

upsampling, a lower value produces quality almost identical to a higher value. The difference lies in the larger phase

shift that exists at higher frequencies, but since the phase shift is completely linear, it’s very difficult to notice. Downsam-

pling, at even the lowest values, generally doesn't introduce any undesired noisy artifacts. Instead, the sound might be

slightly muffled because of increased high-end filtering.

• Postfilter Prevents aliasing at upsampling. The postfilter removes all frequencies above the Nyquist limit, thus

keeping them from generating false frequencies at the low end of the spectrum. In general, select this option for best

results.

Dither Amount For Saving 32-Bit Data To 16-Bit Files Enables dithering when pasting 32-bit audio to 16-bit audio.

The default value of 1 (bit) enables dithering, while a value of 0 disables dithering. For semidithering, choose a value

of 0.5.

With dithering, you can approximate 24-bit performance with 16-bit data, because dynamic range increases by about

10 dB. This allows signals as quiet as –105 dB.

With this option enabled, you can approximate 24-bit performance with 16-bit data, because dithering increases

dynamic range by about 10 dB.

Allow For Partially Processed Data After Canceling Effect Determines what happens after you click the Cancel

button while in the middle of applying an effect to a waveform. When selected, Adobe Audition leaves the effect

applied to all data processed up until the point you clicked Cancel. When deselected, Adobe Audition automatically

removes the effect on already processed data when you click Cancel.

Multitrack preferences

In the Preferences dialog box, click the Multitrack tab to optimize recording, playback, and mix down:

Defaults Specifies recording and panning settings for multitrack sessions.

• Recording Bit Depth Select 16-bit or 32-bit.

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