acoustic labs multitrack plus
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The information covered in this section gives a general overview of the Acoustic Labs Multitrack Plus. The topics covered include a general description and visual diagram of all three of the application's main interfaces. This includes the Track View Interface, the Audio Editor Interface and the Loop Bank Interface. At anytime you can switch between any one of the three interfaces by clicking on the corresponding interface tab (visual aid item #3). In addition, realtime audio effects and audio level monitoring and altering are discussed. Many of the topics in this section are simply a general overview and will be described in greater detail in following sections.

Topics
  • The Track View Interface
  • The Audio Editor Interface
  • The Loop Bank Interface
  • Applying Realtime Audio Effects
  • Audio Level Monitoring and Altering




  • The Track View Interface

    Multitrack Plus Track View The Track View Interface can be thought of as the main control panel for the audio project. All sequencing, playback and recording of a project's audio is handled in the Track View Interface. This interface can also be used to import audio files into the project or easily move and rearrange Audio Snippets within a track using the mouse. An audio data segment located within in track is known as an Audio Snippet. There are two types of Audio Snippets: Extended Audio Snippets and Loop Based Audio Snippets. This, along with all other details concerning the Track View Interface, are discussed in Section 5: The Track View Interface in Detail.



    The Audio Editor Interface

    Multitrack Plus Audio Editor

    The Audio Editor Interface allows for very precise editing of any audio data associated with the project. These editing features include the ability to cut, copy, paste and delete audio as well as applying various other audio operations and effects. There are three different types of audio data that can be loaded into the Audio Editor Interface: Extended Audio Snippets, Audio Loops and Independent Audio. Extended Audio Snippets are any Audio Snippets that have been recorded or imported into the Track View Interface of the audio project. These Audio Snippets can be loaded into the Audio Editor Interface by right clicking on the Audio Snippet and selecting "Audio Snippet". Audio Loops can be edited by selecting the "Edit" option located on the audio loop label in the Loop Bank. Independent Audio is audio that has either been recorded via the Audio Editor Interface or imported into the Audio Editor Interface. The Audio Editor Interface is explained in detail in Section 6, Section 7, Section 8 and Section 9.



    The Loop Bank Interface

    Multitrack Plus Loop Bank

    The Loop Bank Interface allows for Audio Loops to be added to the project. An audio loop that exists as an audio file can imported into the Loop Bank or an audio loop can be created via audio data that currently exists in the Audio Editor Interface. As many as 32 different audio loops can be loaded into the Loop Bank Interface. Once an Audio Loop is loaded into the Loop Bank it can be edited in the Audio Editor Interface or can be added to a track in the Track View Interface. The details of the Loop Bank Interface are discussed in Section 10: The Loop Bank Interface in Detail.



    Applying Realtime Audio Effects

    Multitrack Plus Realtime Effects
    The Acoustic Labs Multitrack Plus is fully equipped with realtime audio effects. To access the realtime audio effects control select "Realtime Audio Effects" from the "View" pulldown menu option as shown in the image to the right. The settings of the realtime audio effects can be adjusted at anytime, even during playback. These effects don't make permanent changes to the underlying audio of a track but can be thought of more as a filter that the originally recorded audio passes through. This allows you to try out an array of different audio effects without ever making permanent changes and loosing the originally recorded audio. These effects include echo, reverb, chorus, flange, equalizer and audio level adjustments. Audio effects can be applied to the entire project or to a specific track. Each track can handle as many as ten different audio effects at one time.

    Multitrack Plus Realtime Effects After selecting the "Realtime Audio Effects" option from the pulldown menu system the realtime audio effect dialog control will be displayed as shown in the image on the right. To view a specific track or main output select the corresponding track using the drop down select box under "Track Selection". If no effects are loaded for the current track there will be no effects tabs displayed. To add a new effect first select the effect you wish to add using the drop down select box under "Add an Effect". After selecting the desired effect, click the add effect button labeled "<". Audio effects are added in a "chaining" order, for example, if you add an echo effect and then add an equalizer effect the audio will first have the echo effect applied to it and will then have the equalizer effect applied to the output of the echo effect. You can easily change the position of the currently selected effect by using the "Move Current Effect" arrows. Audio effects can be removed using the remove effect buttons. Audio effects can be bypassed by checking the appropriate checkbox listed under the "Bypass" checkbox group. Specific details and settings of each audio effect is discussed in detail in Section 9: Effect Operations.



    Audio Level Monitoring and Altering

    Multitrack Plus Audio Levels
    The main output audio level and the audio level for any track can be monitored and altered by using the Audio Level Control. The Audio Level Control can also be used to monitor the input level of any audio I/O device. To access the Audio Level Control select "Audio Levels" from the "View" pulldown menu option as shown in the image to the right. The audio level settings of the Audio Level Control can be adjusted at anytime, even during playback.

    Multitrack Plus Audio Levels After selecting the "Audio Levels" option from the pulldown menu system the Audio Levels Control will be displayed as shown in the image to the left. The main output audio levels are located on the left side of the dialog control. The slider control labeled as visual aid item #1 controls the left channel output level which is displayed in decibel (dB) values in the edit box below the slider (visual aid item #2). Visual aid item #3 shows the main left channel output level. Respectively, visual aid items #4, #5 and #6 show the same values for the main right channel output. The right side of the Audio Level Control handles displaying and altering the audio levels for all 24 tracks as well as all audio input devices. Use the drop down select box shown as visual aid item #8 to select the track you're interested in monitoring or altering the levels. When monitoring or altering audio levels, as with the main output levels, the controls are featured in visual aid items #9, #10 and #11 for the left channel and visual aid items #12, #13 and #14 for the right channel.

    When altering audio levels, if the "Lock Channel Sliders" checkbox is selected when altering one channel, the other channel will be automatically altered by the same amount. To alter channels independently simply uncheck this checkbox. To monitor an audio input device select the device number from the drop down select list shown as visual aid item #8. Once you've selected an audio input device the "Monitor Input Device" (visual aid item #15) button will become enabled. Clicking this button will start monitoring the selected audio input device. Also, if you're recording audio, selecting an audio input device that is currently recording audio will automatically show the input level of the audio being recorded.