| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 485601 | Procedia Computer Science | 2015 | 8 Pages |
Abstract
This paper describes the design and simulation of a sigma delta modulator (∑ΔM) architecture that can be used in digital hearing aid applications. A model of a non-ideal second order feed-forward ∑Δ Modulator, adopted for this purpose, is also presented. The loop coefficients of this architecture are optimized using Genetic Algorithm. The architecture together with optimized coefficients achieves 99 dB SNDR and a dynamic range of 101 dB. A sampling frequency (fs) of 1.28 MHz and a second order modulator makes this architecture less complex and power efficient.
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