Audition Multichannel processing. Whether it is a piece of music or a sound image that we create for the needs of the film, in practice we always use a large number of different sounds that we must hear at the same time when performing the work. In order to achieve complete control over a large number of sounds that are heard at the same time, we must use the multi-channel sound processing method.

Editor Panel in Multitrack mode

Audition Multichannel processing. Sound mixing is the simultaneous merging of a large number of audio clips with certain interrelationships and which originate from different sources into a new sound whole. We have already said that Multitrack mode is a non-destructive form of sound processing because audio clips that enter the mixing process do not change, but only use the information of their content and stored in a special memory where the signals are then processed. In the Editor panel, but in the Multitrack mode section, we have a multi-channel graphic setting of audio channels with which we define individual audio parameters and thus create a new sound, a new sound image. When we start Adobe Audition in Multitrack mode we have set up six channels and a master channel, which is the summary channel of all channels in multitrack mode. The number of audio channels we can have is unlimited, ie it is limited by our ability to manipulate a larger number of channels at the same time. The number of channels of the Multitrack mode represents the number of audio clips that we can hear at the same time. Not all channels need to contain an audio clip at all times. It is common to have character-related audio clips on one channel. So we can have music on one or two channels if it is necessary to hear the end of one song through the beginning of the next, to mix the music. It is usual for the interview to be organized so that the interlocutor, the one we are interviewing, is on one channel while the presenter, the journalist, is on the other channel. This distribution by channels is necessary because if we change a certain parameter, the sound, for example. volume, we can apply it to the whole channel and thus automatically apply it to all audio clips on that channel. Simultaneous manipulation of a large number of audio channels is difficult. We have to be very focused in order to be able to hear all the sounds that are on the channels.

Options in multitrack mode. Audition Multichannel processing
Options in multitrack mode
  1. Track – the audio channel on which we place the audio clip
  2. Selection of functions displayed in the Track column
  3. Toggle Snapping function of gluing the cursor to the piston elements
  4. Current-time Indicator
  5. Zoom navigator
  6. Zoom Out Full All axes
  7. Master track – collective audio channel
  8. Current Current-Time Indicator
  9. Functions for starting the audio player
  10. Zoom functions for channels and timeline

Multitrack Editor’s main four-button toolbar

Four-button main toolbar. Audition Multichannel processing
Four-button main toolbar
  1. Input / Output
  2. Effects
  3. Sends
  4. EQ – equalizer

Audition Multichannel processing. On the left side of each audio channel in the Editor Panel, we have functions and elements that affect certain characteristics of the audio clip that is positioned in that channel. By selecting the Input / Output element, we can select a specific input or output for each channel in Multitrack mode. This is important to us if we record the audio signal in Multitrack mode, which we will see in more detail in the following lessons.

Channel layout with input / output parameters. Audition Multichannel processing
Channel layout with input / output parameters
  1. Select a signal input that can be mono or stereo and from a specific hardware input to the computer
  2. Selection of signal output that can be mono or stereo to the collection channel, auxiliary channel or to the computer hardware
  3. Mute – Turns off the channel
  4. Solo – Skips only this channel while the others are off
  5. Records – Allows you to record on this channel
  6. Fade In and Fade Out graphic commands for each channel
  7. Balance – in stereo channels establishes the ratio of the left and right part of the channel

Audition Multichannel processing. When working with multi-channel mixing, the simple graphical display of the Fade In command in the upper left corner of the audio clip and the Fade Out commands in the upper right corner allow for easy and fast operation. Just like in Waveform mode, we mouse over the icon for the desired function, in Figures 1.4 and 1.5. the procedures for the Fade In function are shown, and we drag it towards the middle of the piston. We must take into account the time scale of the horizontal component of the image, since the length of the fade in the image corresponds to the duration of the effect in time. The shape of the Fade function is linear if you move the mouse parallel to the Fade view while holding the Fade icon. If we lower the icon with the mouse or raise it up, we get logarithmic curves that we have already met in the previous lesson.

Apply the Fade In effect to an audio clip in Multitrack mode. Audition Multichannel processing
Apply the Fade In effect to an audio clip in Multitrack mode

When we perform the function of the graphic Fade in the Editor Panel by pressing the keys on the keyboard Cmd on Mac or Ctrl on Windows operating systems, we get the Cosine gain or decrease curve, which is then performed by the trigonometric function.

Apply the FadeIn effect with the Cmd / Ctrl key pressed. Audition Multichannel processing
Apply the FadeIn effect with the Cmd / Ctrl key pressed

When we select the Effects display function, we have a section where we can add up to 16 different effects to each channel. Each of the added effects can be turned on and off at any time and practically determine its impact on the channel and its impact in relation to other effects. It doesn’t matter in what order we place the effects on the audio channel. Therefore, the effects in the Effects Rack also have ordinal numbers. If we have only one effect, then only that effect affects the audio clips from that audio channel. If we set another effect, that effect will affect the sound image of the audio clip after applying the characteristics from the previous effect, and so on. It is clear that the sound image of an audio clip can be different when changing the order of application of the same effects.

Channel layout in the Editor Panel with Effects Rack. Audition Multichannel processing
Channel layout in the Editor Panel with Effects Rack

Sends is a function that determines where we send the audio channel signal. When mixing certain musical instruments, we must make a premix in order to first define the relationships of individual elements of that instrument, and only then mix the entire instrument with the rest of the orchestra. The drum is the simplest example, when I first send individual elements of the drum to one channel, and only then we process the collective signal as a complete sound of the drum.

Channel layout with Sends functions
Channel layout with Sends functions
  1. Send – Where to send
  2. Before Fade and Post Fade – whether we send the signal before processing or after processing on a specific channel

Audition Multichannel processing. Equalizer is an effect in which we adjust the color of the audio signal. Equalizer is an effect by which we correct the frequency response of an audio signal. We have already seen that each sound has its own frequency characteristic. Depending on the need for mixing, Adobe Audition CC allows you to set the frequency response for the entire channel and thus highlight or suppress certain frequencies of all audio clips that are on that channel.

Channel layout in the Editor Panel with selected EQ functions
Channel layout in the Editor Panel with selected EQ functions
  1. Enable / Disable Equalizer
  2. Equalizer setting

When we activate the Equalizer, we make all settings in a special window. This is the standard Parametric Equalizer window located in the effects. The frequency characteristic is graphically displayed in the window and we can change it by seven points, ie we can adjust the gain or attenuation of the audio clip to seven different frequencies that we define ourselves.

Equalizer
Equalizer

The drop-down menu of the Presets option already defines the classic and common frequency characteristics that we can use or adjust to our needs. More details about the function of the equalizer and how to apply it will be discussed in the teaching unit about the effects.

Predefined equalizer settings
Predefined equalizer settings

Master Track

A master track is a channel in which all channels that are determined to output to the Master channel are mixed. The master channel, like other channels, can contain effects, the equalizer and its output can be forwarded to multiple destinations. In this way, the final processing itself can have effects that now affect the overall sound image we create.

Master channel in the Editor Panel in Multitrack mode
Master channel in the Editor Panel in Multi track mode

On the master channel, we determine what the output will be and to which device from our computer the final sound that we created in the Editor Panel of Multitrack mode will go. So it can be mono, stereo or 5.1, depending on what kind of audio hardware our computer has.

Setting the mono output that we send to the computer output
Setting the mono output that we send to the computer output
Adjust the stereo output that we send to the computer output
Adjust the stereo output that we send to the computer output

Selection

As with the Editor Panel in Waveform mode, when working with a single clip, the selection in Multitrack mode is done in an identical way. Vertically, the selection covers all clips, but only the clip with the cursor at its height is selected. The functions from the In and Out keyboard are exactly the same as when highlighting in the Editor panel in Waveform mode.

Selection in the Editor Panel in Multitrack mode
Selection in the Editor Panel in Multitrack mode

Toggle buttons

Next to the function commands in the upper left part of the Editor Panel is a menu with three buttons.

Toggle buttons
Toggle buttons
  1. Toggle Metronome
  2. Global Clip Stretching
  3. Magnetic attraction of elements inside the Editor Panel (Snapping)

The metronome helps us with recording, providing a rhythmic reference during the recording process. The metronome signal is not recorded in the audio channel, but is routed directly to the Master channel so we can hear it.

Metronome in Multitrack Mode Editor Panel
Metronome in Multitrack Mode Editor Panel

Since we adjust the speed and volume parameters of the metronome on the audio channel in the Editor Panel, we adjust the metronome parameters from the drop-down menu Multitrack, Edit Pattern …

Metronome adjustment
Metronome adjustment

In a special window, we adjust the shape of the metronome clock depending on the needs.

Adjusting the clock shape in metronomes
Adjusting the clock shape in metronomes

In the menu bar there is a drop-down menu Multitrack in which we set the number of channels, which we enter audio clips in the Editor Panel, create an audio clip of the final mix and many other functions that will be discussed in detail in the following lessons.

Multitrack drop down menu
Multitrack drop down menu

Mixer Panel

The mixer is a special panel that represents a completely identical project as the Multitrack view Editor, only with the professional look of a mixer used in studios when broadcasting a radio program or music production. In this view, the channels are arranged vertically, while the individual functions are arranged in horizontal columns

Mixer in Audition Multichannel Processing
Mixer in Audition Multichannel Processing
  1. Defining inputs for each channel
  2. Effects – a list of effects that have been applied to each channel
  3. Sends – functions of sending the signal of an individual channel before or after processing
  4. Equalizer
  5. Panorama or Stereo Balance
  6. Regulator or potentiometer with which we regulate the strength of the audio signal

With the Blue Controller on the right side, we regulate the total output signal, the total strength of the final part.

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