Wolfson

Wolfson Audio Card for Raspberry Pi

The Wolfson Audio Card greatly enhances the Raspberry Pi's audio features providing onboard HD Audio at 24-bit 192KHz.

  • HD Audio up to 24-bit 192kHz
  • 3.5mm 4-pole jack ideal for a VOIP headset
  • Two onboard DMIC microphones
  • 3.5 mm jack Stereo Line Input and Output
  • S/PDIF input and output
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Product Description

The Wolfson Audio Card extends and enhances the Raspberry Pi audio features beyond its native HDMI output with onboard HD Audio at 24-bit 192KHz.
It offers Raspberry Pi users similar flexibility to a PC soundcard letting them capture audio alongside their camera and experiment with stereo digital capture and playback.

Raspberry Pi provides good quality audio across the HDMI link and lower quality stereo audio by way of its 3.5 mm stereo jack but no capability to connect microphones or other external audio sources such as attaching directly to loudspeakers. The Wolfson Audio Card solves this by providing similar audio flexibility to that provided by a PC soundcard.
The Wolfson Audio Card is based on Wolfson WM5102 audio hub codes. The WM5102 is a highly-integrated low-power audio system for smartphones tablets and other portable audio devices.

Two stereo headphone drivers each provide stereo ground-referenced or mono BTL outputs with noise levels as low as 2.3μVRMS for hi-fi quality line or headphone output.
A signal generator for controlling haptics devices is included; vibe actuators can connect directly to the Class-D speaker output or via an external driver on the PDM output interface. All inputs outputs and system interfaces can function concurrently.

Audio quality

Extends the Raspberry Pi's capabilities to HD Audio up to 24-bit 192kHz.

Built-in amplifier

An onboard Class D power amplifier is provided.

Inputs and outputs

S/PDIF input and output Two DMIC microphones onboard for stereo recording 3.5mm 4-pole jack ideal for a VOIP headset.

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