Sound activated voice Recorder

May 30, 2016
Flashing LEDs indicate that
Accessed by: (on a Mac Click on any of the other Preferences sections in the above image to go directly to that Preferences page.


  • Overdub: Play other tracks while recording new one: Makes existing tracks in the project play when you click the Record button in Transport Toolbar. You can decide which tracks will play according to their mute/solo buttons. When Overdub is enabled, recording will stop when the recording cursor reaches the end of a selection region. Turn overdub off if you want to record past the end of the selection.
  • (Mac only) Hardware Playthrough: Listen while recording or monitoring new track: Allows you to hear the input by sending it directly to the output of the same audio device you are recording from. This incurs no latency or CPU usage.

Software Playthrough must not be used for recording computer playback because it will create feedback echoes.

Useful Tips:
  • When recording from a microphone, listen in headphones so that the microphone hears only what you are actually recording.


  • Audio to buffer: A "buffer" is a chunk of audio waiting for the computer to process it. At the default 100 milliseconds (ms) setting, the audio will take 0.1 seconds to travel through the soundcard when recording or playing. Decreasing this value means recordings will be laid down on disk with less latency, and playback may respond faster. However, the computer will have to work faster so that it's ready to process the shorter chunks as soon as required. Setting this value too low (for example to 1 ms) will mean the computer will not be able to keep up, and neither recording or playback will work. 100 ms is a safe setting for most computers.
  • Latency correction: On most consumer systems there will be a delay between singing or hitting your note and it being laid down in the recording. When the default setting is enabled, Audacity will push recorded tracks backwards by 130 ms to compensate for this delay. If your latency is constant, you can adjust this correction value so that your recorded tracks should end up properly synchronized with the other tracks after correction. To set a custom latency value for your system, see the Latency Test page.

Sound Activated Recording

  • Sound Activated Recording: Enables or disables Sound Activated Recording. When enabled, click the Record button in Transport Toolbar to start the Sound Activated Recording session. Recording will now occur whenever the received input is above the Sound Activation Level you specify (see the item below). Recording will pause whenever the received input falls below that level. Press the Stop button to stop the recording session.
USB Drive Voice Recorder (Voice Activated FD30)
USB Drive Voice Recorder (Voice Activated FD30)
Sound Activated Recorder
Sound Activated Recorder
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