Vector scope

Usage

The vector scope tool is displayed when a stereo input is detected. Otherwise the display will switch to Surround scope Usage provided if your edition of FLUX:: MiRA:: includes this option.

Vector scope display in surround (with selection menu).

Modes in Surround :

Mode	Description
L-R	Use only Left and Right Channels.
Front	Use a stereo down mix with all front channels.
Rear	Use a stereo down mix with all Rear channels.
Stereo downmix	Use a stereo down mix with all channels.
Lt/Rt downmix	Use a Lt/Rt down mix with all channels.
LR-Lfe	Use a mono summation of Left and Right + the Lfe (sub) channel.
Center-Lfe	Use Center + Lfe (sub) channel.
Front-Lfe	Use a mono summation of the front channels + the Lfe (sub) channel.

Settings

Mixdown

Name	Description
Mode	Select which channels or mixdown to display in the vector scope. - LR : only display the left/right channel correlation. - Front : use a summation of the speaker at the front. - Rear : use a summation of the speaker at the rear. - Stereo downmix : use a stereo reduction of the mix. - Lt/Rt downmix : use a Lt/Rt matrixing. - LR-Lfe : compare the summation of left-right channels vs. lfe. - C-lfe : compare center channel and lfe. - Front-lfe : compare front speaker’s summation and lfe.

Mode

Select which channels or mixdown to display in the vector scope.
- LR : only display the left/right channel correlation.
- Front : use a summation of the speaker at the front.
- Rear : use a summation of the speaker at the rear.
- Stereo downmix : use a stereo reduction of the mix.
- Lt/Rt downmix : use a Lt/Rt matrixing.
- LR-Lfe : compare the summation of left-right channels vs. lfe.
- C-lfe : compare center channel and lfe.
- Front-lfe : compare front speaker’s summation and lfe.

Display

Name	Description
Transfer Function	Change the axis to input over output instead of side over mono.
Fs	Over-sampling factor in multiples of FS, that is the incoming audio is up-sampled as necessary to reach this multiple times 48kHz. Increasing this value increases the display precision and reactivity, at the expense of a little CPU overhead.
Passes	Determine the number of drawing passes to create the particle clouds on screen. Lower values will be emphasized on individual particles, while greater values create zones. Such zones can help in reading the information provided by Nebula.
Blending	Controls the amount of particle blending with the current image, from 1 to 100%. A higher value gives more priority to the incoming audio over past frames.
Fading	Controls display persistence, i.e. the “fade to black” amount for a frame. Lowering this value retains past particles longer, whereas increasing this makes them disappear faster.
Size factor	Controls the size of individual particles with respect to screen size.
Blur kernel size	Controls the radius of the blur effect applied to past particles. Particles are “smeared” more and more as they become older, depending on this setting. Naturally, a bigger value increases the smearing, at the expense of processing power.¹
Particle scaling	Controls the size of individual particles with respect to screen size.
Dynamic fading	Controls the display persistence by signal dynamics
Color mode	This defines how the particle color is determined: - Static color: use only particle start color (see below) - Power grading: color is modulated by overall signal RMS power - Dynamic grading: color is modulated by signal dynamics - Pw+Dyn grading: mix of the two previous modes
Particle start/end colors	Sets the particle color range to be used.

Choosing the value for this setting is really a matter of taste, although please keep in mind that values above 5 will require a sufficiently powerful graphics card in order to maintain a responsive display.↩︎