![background image](http://html.mh-extra.com/html/creative/1212m/1212m_owners-manual_2681307065.webp)
5 - Effects
Core Effects Descriptions
E-MU Digital Audio System
65
Chorus
An audio delay in the range of 15-20 milliseconds is too short to be an echo, but is
perceived by the ear as a distinctly separate sound. If we now vary the delay time in this
range, an effect called chorus is created, which gives the illusion of multiple sound
sources. A slight amount of feedback serves to increase the effect. A very slow LFO rate is
usually best for a realistic effect, but a faster LFO rate can also be useful with minimal
LFO depth (.2). Since this is a stereo chorus, an LFO phase parameter is included which
can be used to widen the stereo image.
Compressor
In its simplest form, an audio compressor is just an automatic gain control. When the
volume gets too loud, the compressor automatically turns it down. Compressors are
useful in musical applications because they allow you to record a “hotter” signal
without overloading the recording device.
Since the compressor turns
down
the gain of the signal, you might wonder how can it
make the signal level stronger. A Post Gain control allows you to boost the output gain
of the compressor in order to make up for the gain reduction. The overall level is higher
and only turned down when the signal level gets too loud. This level is called the
Threshold,
which just happens to be the most important control on the compressor.
Parameter
Description
Delay
Sets the length of the delay. Range: 0ms to 20ms.
Feedback
Sets the amount of delayed signal that will be recirculated through
the delay line. Range: 0% to 100%
LFO Rate
Sets the frequency of the low frequency oscillator.
Range: .01Hz to 10Hz
LFO Depth
Sets how much the LFO affects the delay time. Increases the
animation and amount of the chorus effect. Range: 0% to 100%
LFO Waveform
Selectable between Sine or Triangle wave.
LFO L/R Phase
Controls the stereo width by adjusting the phase difference of the LFO
waveform between left and right channels. Range: -180° to +180°
In
Out
Threshold
Ratio
Attack Release
Post Gain
Signal path = Stereo
VCA
Level
Control
Delay
Содержание 1212M
Страница 1: ...Creative Professional 1 Owner s Manual Digital Audio System ...
Страница 16: ...2 Installation Software Installation 16 Creative Professional ...
Страница 52: ...4 The PatchMix DSP Mixer Main Section 52 Creative Professional ...
Страница 92: ...6 Using High Sample Rates Overview 92 Creative Professional ...
Страница 114: ...7 Appendix Internet References 114 Creative Professional ...
Страница 120: ...Index Z 120 Creative Professional Notes ...