Connecting to audio hardware

You can use a wide range of hardware inputs and outputs with Adobe Audition. Sound card inputs let you bring in audio from sources such as microphones, tape decks, and digital effects units. Sound card outputs let you monitor audio through sources such as speakers and headphones.

A.
Sound card inputs connect to sources such as microphones and tape decks.

B.
Sound card outputs connect to speakers and headphones.

    Configure audio inputs and outputs

    When you configure inputs and outputs for recording and playback, Adobe Audition can use these kinds of sound card drivers:

    • In Windows, ASIO drivers support professional cards and MME drivers typically support standard cards.

    • In Mac OS, CoreAudio drivers support both professional and standard cards.

    ASIO and CoreAudio drivers are preferable because they provide better performance and lower latency. You can also monitor audio as you record it and instantly hear volume, pan, and effects changes during playback.

    1. Choose Edit > Preferences > Audio Hardware (Windows) or Audition > Preferences > Audio Hardware (Mac OS).
    2. From the Device Class menu, choose the driver for the sound card you want to use.
    3. Choose a Default Input and Output from the card.
      In the Multitrack Editor, you can override the defaults for specific tracks. See Assign audio inputs and outputs to tracks.
    4. (MME and CoreAudio) For Master Clock, choose the input or output to which you want other digital audio hardware to synchronize (ensuring accurate alignment of samples).
    5. For I/O Buffer Size (ASIO and CoreAudio) or Latency (MME), specify the lowest setting possible without audio dropouts. The ideal setting depends on the speed of your system, so some experimentation may be necessary.
    6. Choose a Sample Rate for the audio hardware. (For common rates for different output mediums, see Understanding sample rate.)
    7. (Optional) To optimize the performance of ASIO and CoreAudio cards, click Settings. For more information, consult the documentation for the sound card.
    Note: By default, Adobe Audition controls ASIO sound cards while playing or monitoring audio. If you want to access the card in another application, select Release ASIO Driver In Background. (Audition still controls the card while recording to avoid having recordings suddenly stop.)

    Assign file channels to inputs and outputs

    1. Choose Edit > Preferences > Audio Channel Mapping (Windows) or Audition > Preferences > Audio Channel Mapping (Mac OS).

    2. To the far right of items in the Input and Output lists, click the triangles to choose a hardware port for each file channel.

    This procedure also sets default outputs for the Master track in the Multitrack Editor. To override the defaults, see Assign audio inputs and outputs to tracks.