As it stands, the Raspberry Pi is more than capable of audio output using its HDMI port, but it is always nice to have additional flexibility as part of the mix, especially if you are an avid DIY enthusiast. This is one particular reason that Element 14 has decided to team up with Wolfson Audio in order to roll out an official add-on sound card for the Raspberry Pi. This new add-on sound card board will cost approximately $33 a pop, where it boasts of SPDIF in/out, 3.5mm headphone and mic jacks, RCA line out and in, and direct speaker connection pins that are on the board itself. This makes it the ideal base if you intend to work on a portable, Raspberry Pi-powered arcade emulator cabinet.
Apart from that, Wolfson also offers a pair of integrated digital microphones, which translates to you not having to bother with the perennial issue of messy cables to connect to an external microphone if you are not interested in doing so. Once the Raspberry Pi camera is on board, I guess you have an impressive looking natural user interface set-up, which is more than ready to respond to both voice and gesture commands. The Wolfson chip itself is not a slouch either when it comes to music, being capable of processing 24-bit, 192 KHz audio. [Product Page]
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