Bass chorus
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The Orinj Bass Chorus is similar to the Orinj Chorus.
It creates multiple repetitions of the same sound with minimal delay.
The idea of a chorus is to create a fuller, richer sound with the impression that the
sound has multiple sources. The repetitions of the signal (the voices) are with the
same amplitude as the original signal (no decay). To make the chorus natural, the small
delays between the original signal and the repetitions vary over time (the delay sweep).
The difference between the Orinj Bass Chorus and the Orinj Chorus is that the Orinj Bass
Chorus does not repeat bass frequencies. This is so to avoid the muddiness in
the sound that may appear if the bass frequencies are repeated multiple times. The Orinj
Bass Chorus thus uses a high pass filter, a filter that passes only
frequencies above some specific cutoff frequency and stops
all frequencies below that frequency. Frequencies above the cutoff frequency are
chorused. Frequencies below the cutoff frequency remain only in the original signal, but
not in any of the repetitions.
Using the Orinj Bass Chorus
The Orinj Bass Chorus can be added to tracks
in the multitrack session view,
tracks the
loop building view,
and to waves in the
single wave view. In the multitrack session view and
in the loop building view, first select the track to which you want to add the effect.
In all of these views, click on Effect, Delay, and then on Orinj Bass Chorus in the
Orinj menu. You will see the following dialog.

When this dialog becomes visible, the Orinj Bass Chorus effect has been added. Adjust the parameters of
the bass chorus in the dialog above and click on Close. These parameters are describe
below.
Orinj Bass Chorus parameters
See Effects for an explanation of the Title, Track, Presets,
Bypass, and Lock channels controls. The remaining Orinj Bass Chorus controls are as follows.
-
Left channel voices: Use this control to set the number of voices in the left channel.
The number of voices is equal to the number of repetitions of the original signal plus
one – plus the original signal. The chorus can have between 1 and 99 repetitions, which
means between 2 and 100 voices.
-
Left channel maximum delay: Use this control to set the maximum difference in time between
the original signal and any of the repetitions in the left channel. The maximum delay can be
between 10 milliseconds (ms) and 200 ms.
-
Left channel minimum delay: Use this control to set the minimum difference in time
between the original signal and any of the repetitions in the left channel. This delay
is specified in milliseconds (ms) and can be between 5 ms and 100 ms.
-
Left channel rate: Use this control to specify the speed with which the differences in
time between the original signal and any of the repetitions in the left channel changes.
The fact that the delays between the original signal and the repetitions change is
called delay sweep. This rate is measured in milliseconds per second (ms/s) and can be
between 0 ms / s and 50 ms / s. For example, a value of 5 ms/s means that the delay will
change by at most 5 ms for every second.
-
Left channel invert: Use this control to invert the phase of the chorused signal in the left
channel (to turn the signal upside down). The bass chorus effect may sound different if the
phase of the chorus (but not the original signal) is inverted, depending on the settings for
the remaining parameters.
-
Right channel voices: Use this control to set the number of voices in the right channel. This
control works in the same way as the left channel voice control.
-
Right channel maximum delay: Use this control to set the maximum difference in time between
the original signal and any of the repetitions in the right channel. This control works the
same way as the left channel maximum delay.
-
Right channel minimum delay: Use this control to set the minimum difference in time between
the original signal and any of the repetitions in the right channel. This control works the
same way as the left channel minimum delay.
-
Right channel rate: Use this control to specify the speed at which the delay between the
original signal and any of the repetitions in the right channel changes. This control works
the same way as the left channel rate.
-
Right channel invert: Click on this checkbox to invert the phase of the chorused signal in the
right channel.
-
High pass frequency: Use these controls – the box and the slider – to set the cutoff frequency,
above which frequencies will be chorused and below which frequencies will not be chorused (will
remain in the original signal but will not show up in the repetitions). The cutoff frequency
is between 300 Hz and 2.1 KHz.
-
Precision: Use this control to set the precision, with which high and low frequencies will be
separated. The high pass filter employed to separate the two frequency ranges can be precise
and requiring a lot of computations or less precise and requiring less computations. In all
high pass filters, the high frequencies will be passed approximately with their original
amplitude, whereas the amplitude of the low frequencies will be significantly lowered. Around
the cutoff frequencies, there will be a somewhat smooth transition from very low amplitudes for
the low frequencies to the original amplitudes for the high frequencies. The less precise the
filter is, the slower the transition will be. The value shown in this control is approximately the length of
this transition in Hz. This transition, with the current design of Orinj, can be between 200 Hz
and 800 Hz wide. As the filter becomes more precise, the transition becomes smaller, but the
number of computations required to compute one sample of the signal after the high pass filter
becomes larger. This number of computations is shown in the filter length number below the
control.
As you change the maximum delay in any of the channels in the bass chorus, the minimum delay might
change automatically to ensure that the minimum delay is always smaller than the maximum delay.
Similarly, as you change the minimum delay in any of the channels, the maximum delay might change
automatically to be always higher than the minimum delay.
As with the Orinj Chorus, when the chorus is initially set, the initial delay for any of the
repetitions is a random value between the minimum and maximum delay. At the beginning of playback,
the initial delay for each of the repetitions is therefore different. The same random values are
used when playback stops and is restarted to ensure that the effect has a consistent sound. During
playback, the delay amount for each of the repetitions changes (delay sweep) at a random rate up to
the (maximum) rate of change specified in the dialog, up and down between the maximum and minimum
delays.
See Effects for additional notes on: where Orinj effects can be used,
using boxes and sliders that control the same effect parameter, applying effects to mono and stereo
waves, and using effects during playback. See Working with effects
for additional information on creating, modifying, moving, removing, and processing effects.
Dry and wet mix
The Orinj Bass Chorus supports dry and wet mix changes. That is, you can adjust the mix
between the original signal and the chorused signal. See
Effects for more information.