Thesis (MScEng (Electrical and Electronic Engineering))--University of Stellenbosch, 2006. / Digital audio data storage mediums have long been used within the consumer
market. Today, because of the advancement of processor clock speeds and increased
MOSFET switching capabilities, digital audio data formats can be directly amplified
using power electronic inverters. These amplifiers known as Class-D have an
advantage over there analogue counterparts because of their high efficiency.
This thesis deals with the signal processing algorithms necessary to convert the
digital audio data obtained from the source to a digital pulse width modulated signal
which controls a full bridge inverter for audio amplification. These algorithms
address difficulties experienced in the past which prevented high fidelity digital pulse
width modulators to be implemented.
The signal processing algorithms are divided into modular blocks, each of
which are defined in theory, designed and simulated in Matlab® and then
implemented within VHDL firmware. These firmware blocks are then used to realize
a Class-D audio amplifier.
| Identifer | oai:union.ndltd.org:netd.ac.za/oai:union.ndltd.org:sun/oai:scholar.sun.ac.za:10019.1/1574 |
| Date | 03 1900 |
| Creators | Jacobs, Deon |
| Contributors | Mouton, H. du T., University of Stellenbosch. Faculty of Engineering. Dept. of Electrical and Electronic Engineering. |
| Publisher | Stellenbosch : University of Stellenbosch |
| Source Sets | South African National ETD Portal |
| Language | English |
| Detected Language | English |
| Type | Thesis |
| Format | 2286628 bytes, application/pdf |
| Rights | University of Stellenbosch |
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