American Audio V2000 MKII Spezifikationen PDF herunterladen (Seite 399)

100

101

Menu Effects

399

Resample / Timestretching / Pitchshifting

Important: If you want to change the sample rate of a whole

audio file (e.g. from 48 kHz to 44.1 kHz) please use the

separate function “Change Sample Rate” in the Effects

menu!

All algorithms in this dialog only use the parameter factor

(upper left edit control) to set the amount of effect. All the

other input fields in the parameter group simply control

this factor. This makes it easy to specify the factor by typing

in the new length, pitch or tempo in bpm. Press “Refresh

Display” to calculate the actual factor if needed!

The following algorithms can be used:

Resampling:

When using a factor lower than 1.0 the material becomes

faster and higher. This is very similar to an analog tape

deck, which runs at a higher or lower speed. Also samplers

and pcm-synthesizers use this type of algorithm for trans-

posing the samples or waveforms. Use this mode to correct

the pitch and speed of any audio material, which may

change its length.

If the factor is lower than 1.0, the re-sampling process is

performed without a quality loss.

Otherwise, the re-sampling process will result in a loss of

high frequencies. If for example the length of a 44.1 kHz

sample is doubled, the resulting frequency response of the

processed sample is limited to 11.025 kHz.

Pitch Shifting:

The pitch of the sample is changed, maintaining the length.

Use this mode to transpose an audio object without chang-

ing the length.

Time Stretching:

The length of the sample is changed, maintaining the pitch.

Use this mode for example to change the tempo of a drum

loop without changing the pitch.

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