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The design of a high-performance, floating-point embedded system for speech recognition and audio research purposes
Thesis (MScEng (Electrical and Electronic Engineering))--Stellenbosch University, 2008.
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| Format: | Thesis |
| Language: | English |
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Stellenbosch : Stellenbosch University
2008
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| _version_ | 1867613933651623936 |
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| access_status_str | Open Access |
| author | Duckitt, William |
| author2 | Niesler, T. R. |
| author_browse | Duckitt, William Niesler, T. R. |
| author_facet | Niesler, T. R. Duckitt, William |
| author_sort | Duckitt, William |
| collection | Thesis |
| dc_rights_str_mv | Stellenbosch University |
| description | Thesis (MScEng (Electrical and Electronic Engineering))--Stellenbosch University, 2008. |
| format | Thesis |
| id | oai:scholar.sun.ac.za:10019.1/2014 |
| institution | Stellenbosch University (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:44:01Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from SUNScholar — Stellenbosch University Repository |
| publishDate | 2008 |
| publishDateRange | 2008 |
| publishDateSort | 2008 |
| publisher | Stellenbosch : Stellenbosch University |
| publisherStr | Stellenbosch : Stellenbosch University |
| record_format | dspace |
| source_str | SUNScholar — Stellenbosch University Repository |
| spelling | oai:scholar.sun.ac.za:10019.1/2014 The design of a high-performance, floating-point embedded system for speech recognition and audio research purposes Duckitt, William Niesler, T. R. Smit, W. Stellenbosch University. Faculty of Engineering. Dept. of Electrical and Electronic Engineering. Automatic speech recognition Speech processing systems Dissertations -- Electronic engineering Theses -- Electronic engineering Electrical and Electronic Engineering Thesis (MScEng (Electrical and Electronic Engineering))--Stellenbosch University, 2008. This thesis describes the design of a high performance, floating-point, standalone embedded system that is appropriate for speech and audio processing purposes. The system successfully employs the Analog Devices TigerSHARC TS201 600MHz floating point digital signal processor as a CPU, and includes 512MB RAM, a Compact Flash storage card interface as non-volatile memory, a multi-channel audio input and output system with two programmable microphone preamplifiers offering up to 65dB gain, a USB interface, a LCD display and a push-button user interface. An Altera Cyclone II FPGA is used to interface the CPU with the various peripheral components. The FIFO buffers within the FPGA allow bulk DMA transfers of audio data for minimal processor delays. Similar approaches are taken for communication with the USB interface, the Compact Flash storage card and the LCD display. A logic analyzer interface allows system debugging via the FPGA. This interface can also in future be used to interface to additional components. The power distribution required a total of 11 different supplies to be provided with a total consumption of 16.8W. A 6 layer PCB incorporating 4 signal layers, a power plane and ground plane was designed for the final prototype. All system components were verified to be operating correctly by means of appropriate testing software, and the computational performance was measured by repeated calculation of a multi-dimensional Gaussian log-probability and found to be comparable with an Intel 1.8GHz Core2Duo processor. The design can therefore be considered a success, and the prototype is ready for development of suitable speech or audio processing software. 2008-06-12T08:33:29Z 2010-06-01T08:38:51Z 2008-06-12T08:33:29Z 2010-06-01T08:38:51Z 2008-03 Thesis http://hdl.handle.net/10019.1/2014 en Stellenbosch University application/pdf Stellenbosch : Stellenbosch University |
| spellingShingle | Automatic speech recognition Speech processing systems Dissertations -- Electronic engineering Theses -- Electronic engineering Electrical and Electronic Engineering Duckitt, William The design of a high-performance, floating-point embedded system for speech recognition and audio research purposes |
| title | The design of a high-performance, floating-point embedded system for speech recognition and audio research purposes |
| title_full | The design of a high-performance, floating-point embedded system for speech recognition and audio research purposes |
| title_fullStr | The design of a high-performance, floating-point embedded system for speech recognition and audio research purposes |
| title_full_unstemmed | The design of a high-performance, floating-point embedded system for speech recognition and audio research purposes |
| title_short | The design of a high-performance, floating-point embedded system for speech recognition and audio research purposes |
| title_sort | design of a high performance floating point embedded system for speech recognition and audio research purposes |
| topic | Automatic speech recognition Speech processing systems Dissertations -- Electronic engineering Theses -- Electronic engineering Electrical and Electronic Engineering |
| url | http://hdl.handle.net/10019.1/2014 |
| work_keys_str_mv | AT duckittwilliam thedesignofahighperformancefloatingpointembeddedsystemforspeechrecognitionandaudioresearchpurposes AT duckittwilliam designofahighperformancefloatingpointembeddedsystemforspeechrecognitionandaudioresearchpurposes |