Acquisition and transmission of voice, voice signal input: using dsp AIC23 through which the AD conversion acquisition input voice signal from a signal of each collection, the data sent to the DSP s McBSP interface, the DSP can be read into the voice data,each value is the 16-bit unsigned integer, left and right channels each have a value. Voice signal output: DSP voice data sent by the McBSP interface to the AIC23, AIC23 the DA devices into analog signal output.

Lab0701-Echo
............\5509.h
............\aic23.c
............\audio.c
............\audio.cmd
............\audio.CS_
............\.........\FILE.CDX
............\.........\FILE.DBF
............\.........\FILE.FPT
............\.........\SYMBOL.CDX
............\.........\SYMBOL.DBF
............\.........\SYMBOL.FPT
............\audio.paf
............\audio.paf2
............\audio.pjt
............\audio.sbl
............\c55xxdefs.h
............\cc_build_Debug.log
............\Debug
............\Debug.lkf
............\Debug.lkv
............\.....\aic23.obj
............\.....\audio.map
............\.....\audio.obj
............\.....\audio.out
............\.....\i2c.obj
............\.....\sdram_init.obj
............\.....\util.obj
............\i2c.c
............\readme.txt
............\sdram_init.c
............\SY.wks
............\util.c
............\util.h

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