Bedienungsanleitung Acoustica Mixcraft-4 (Seite 37 von 93) (Englisch)

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you can use them to create filter sweeps, by adding resonance while the cutoff frequency moves up or down. The

cutoff frequency and resonance amount are each controlled via an envelope, and these values can change over

time, in the same way a volume or pan envelope can be used to change to volume and pan amount over time.

How To Edit A Low Pass Filter

To edit a sound's low pass filter cutoff, go to the toolbar and make sure that Low Pass Cutoff is selected. By

default, all points on this envelope are at 100%, meaning that all sounds below the cutoff (i.e. everything) can be

heard. Adding points lower than 100% will cause high frequencies to be increasingly removed from the audio.

To edit a sound's low pass filter resonance, go to the toolbar and make sure that Low Pass Resonance is

selected. By default, all points on this envelope are at 0%, meaning that there is no resonance/emphasis at the

cutoff point. Adding points higher than 0% will cause emphasis at the cutoff frequency, if any frequencies exist at

and around that frequency.

What Is A High Pass Filter?

high pass filter is the exact opposite of a low pass filter, meaning that high frequencies above the cutoff point are

allowed to pass, while frequencies below the cutoff point are reduced or removed.

The high pass filter in Mixcraft is also a resonant filter.

How To Edit A High Pass Filter

To edit a sound's high pass filter cutoff, go to the toolbar and make sure that High Pass Cutoff is selected. By

default, all points on this envelope are at 0%, meaning that all sounds above the cutoff (i.e. everything) can be

heard. Adding points above 0% will cause low frequencies to be increasingly removed from the audio.

To edit a sound's high pass filter resonance, go to the toolbar and make sure that High Pass Resonance is

selected. By default, all points on this envelope are at 0%, meaning that there is no resonance/emphasis at the

cutoff point. Adding points higher than 0% will cause emphasis at the cutoff frequency, if any frequencies exist at

and around that frequency.

What Famous Examples Of Music Have This Effect?

Many songs in many genres take advantage of resonant filter sounds. The opening note to the Rush song Tom

Sawyer contains a famous resonant low pass filter sweet of a synthesizer sound. Many dance songs begin with a

low pass filter whose cutoff frequency is slowly rising, so the song starts off muted and suddenly is full and bright.

Time Stretching Sounds (FlexAudio™)

Time travel may not be possible yet, but you can change the speed of a sound without changing its pitch. :) In the

past, changing the speed or playback rate of a sound resulted in changing the pitch, also known as the dreaded

"chipmunk" effect.

Time Stretching Sounds

Each sound can be time stretched with or without changing its pitch.. A sound can be adjusted by 25% to 400%

which would result in a sound four times as fast or four times as slow. You can visually time stretch a sound with

FlexAudio™, described below. Otherwise, click on the Sound Details Tab on the bottom and select the sound you

are interested in adjusting.

Make sure to switch the sound from Adjust To Project Tempo to Time Stretch By mode, if its not already in that

mode.

djust the sound to the desired percentage. Setting it to 50% would cause the sound to be 1/2 the size and

playback two times as fast.

If you want the sound's tempo to slow or speed up over time or beat match, you should change the sound's mode

Page 37 of 93Mixcraft 4

2/7/2008file://C:\acoustica\mixcraft\hel

\flat-manual\mixcraft.htm

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