1. Couch, L.W.: ‘Digital and analog communication systems’, (Prentice Hall, New Jersey 1997),5th
2. Engel, G.L., Morley, R.E., Kwa, S.W., and Fretz, R.J.: ‘Integrated circuit logarithmic digital quantizers with applications to low-power data interfaces for speech processing’, Moscovitz, H.S., Yao, K., Jain, R., VLSI signal processing IV, (IEEE Press, New York 1990)
3. Benefits of digital hearing aids
4. DSP Village, Texas Instruments, Inc. [Online]. Available: http://dspvillage.ti.com/docs/allproducttree.jthml?pageId=c5
5. van de Plassche, R.: ‘Integrated analog-to-digital and digital-to-analog converters’, (Kluwer Academic Publishing, Boston, MA 1994)