Auido core altera de1 board

Hi chema15,

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Does anyone has a audio core for NIOS II in vhdl ??

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On the DE1 CD under the DE1_demonstrations folder you have some worked out examples using the audio-codec for playback: DE1_SD_Card_Audio and DE1_i2sound, DE1_synthesizer.

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and How I can add a new component in quartus SOPC?

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You can add a component in SOPC by clicking: "New..." in the "System Contents" window pane of the SOPC Builder.

More info on: http://www.altera.com/literature/hb/qts/qts_qii54005.pdf

Hope this helps...