Table of Contents

Speaker

The Harp Behavior Speaker is a sound output peripheral for the Behavior board. It connects to one of the general-purpose digital outputs and turns the board's PWM signal into an audible tone. Refer to the connections article to set up the peripheral and the Generate PWM article to use it in Bonsai.

Speaker

Note

The Harp Behavior Speaker is meant for playback of simple tones. For audio stimulation with complex stimuli and high precision, consider using the Harp Sound Card.

Key Features

  • Onboard speaker driven directly by a digital output.
  • Volume potentiometer to adjust the amplitude.
  • Screw terminal for wiring; no soldering needed.

Specs

  • Input signal: 5 V PWM
  • Speaker: PUI Audio AST-03208MR-R
  • Frequency range: 500 Hz–10 kHz
  • Connector: Screw terminal
Note

While the speaker can go higher in range, the PWM signal generation on the Behavior board has a 10 kHz upper limit.

Hardware

Version Compatible Behavior Board Notes
1.2 > 1.0
  • Fixed the volume direction
1.1 > 1.0
  • Initial version

Assembled units are available from the Open Ephys store.


Last updated with:
Hardware v2.1
Firmware v3.3
Bonsai Package v0.2

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