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ADC / DAC at 384k with microprocessor for fft and data management

We are designing an ADC and DAC pair that will allow us to record sound pressures as wav files with a sampling rate around 384k, (16, 32 or 64bits). Linear phase accuracy is important. The ADC is intended as the front end of an embedded system that will process the data in real-time. These systems have  a market range betweeen 10k units and 80k units according to several studies. What components (ADC, DAC, microprocessor and literature)  would TI engineers suggest we review? Many thanks for your help, Sooch