| Title: | Audio Signal Processing |
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| Long Title: | Audio Signal Processing |
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| Field of Study: |
Artificial Intelligence & Signal & Image Processing
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| Valid From: |
Semester 1 - 2017/18 ( September 2017 ) |
| Module Coordinator: |
JOSEPH CONNELL |
| Module Author: |
HUGH MC CARTHY |
| Module Description: |
Introduction to audio signal processing comprising digitisation, signal spectral analysis, digital filtering, sample rate conversion, digital signal manipulation and compression and linear and nonlinear wave synthesis |
| Learning Outcomes |
| On successful completion of this module the learner will be able to: |
| LO1 |
Describe the process of signal digitisation |
| LO2 |
Predict the spectral attributes of several signal types |
| LO3 |
Design difference equations to implement digital filters and oscillators |
| LO4 |
Design and implement sample rate conversion strategies |
| LO5 |
Design and implement through software various sound manipulation and synthesis strategies |
| LO6 |
Employ a computational software package to analyse and synthesise single and multitone sound signals and to display signal and system characteristics |
| Pre-requisite learning |
Module Recommendations
This is prior learning (or a practical skill) that is strongly recommended before enrolment in this module. You may enrol in this module if you have not acquired the recommended learning but you will have considerable difficulty in passing (i.e. achieving the learning outcomes of) the module. While the prior learning is expressed as named MTU module(s) it also allows for learning (in another module or modules) which is equivalent to the learning specified in the named module(s).
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Incompatible Modules
These are modules which have learning outcomes that are too similar to the learning outcomes of this module. You may not earn additional credit for the same learning and therefore you may not enrol in this module if you have successfully completed any modules in the incompatible list. |
| No incompatible modules listed |
Co-requisite Modules
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| No Co-requisite modules listed |
Requirements
This is prior learning (or a practical skill) that is mandatory before enrolment in this module is allowed. You may not enrol on this module if you have not acquired the learning specified in this section.
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| No requirements listed |
Module Content & Assessment
| Indicative Content |
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DSP Hardware
Block diagram description of the digitisation of an analogue signal
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Digital Signals
Sampling, quantisation,PCM, companding, error codes
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Spectral Analysis
Fourier series/transform, amplitude and phase, resolution
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Digital Filtering
Design of digital filters, nonrecursive and recursive, analysis of characteristics, implementation, design of digital oscillators
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Multirate Sampling
Efficient methods for up/down sampling using software
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Manipulating Digital Signals
Pitch Shifting, Time shifting using overlap-add, compression
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Waveshaping
Linear and nonlinear waveshaping
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| Assessment Breakdown | % |
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| Course Work | 100.00% |
| Course Work |
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| Assessment Type |
Assessment Description |
Outcome addressed |
% of total |
Assessment Date |
| Performance Evaluation |
Verify the sampling process, explore quantisation effects, display spectral analysis in MATLAB |
1,2 |
30.0 |
Week 4 |
| Performance Evaluation |
Design digital filter/oscillator, display characteristics, verify operation |
2,3 |
30.0 |
Week 7 |
| Performance Evaluation |
Perform up/down sampling strategies and verify results through wav files |
1,2,3,4,5 |
30.0 |
Week 10 |
| Project |
Devise and implement a complex sound synthesis programme and present results |
1,2,3,4,5,6 |
10.0 |
Week 12 |
| No End of Module Formal Examination |
The institute reserves the right to alter the nature and timings of assessment
Module Workload
| Workload: Full Time |
| Workload Type |
Workload Description |
Hours |
Frequency |
Average Weekly Learner Workload |
| Lecture |
No Description |
2.0 |
Every Week |
2.00 |
| Lab |
No Description |
1.0 |
Every Week |
1.00 |
| Independent & Directed Learning (Non-contact) |
No Description |
4.0 |
Every Week |
4.00 |
| Total Hours |
7.00 |
| Total Weekly Learner Workload |
7.00 |
| Total Weekly Contact Hours |
3.00 |
| This module has no Part Time workload. |
Module Resources
| Recommended Book Resources |
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- Ken C. Pohlmann 2010, Principles of Digital Audio, 6th Ed., McGraw Hill New York [ISBN: 978-007166346]
- Udo Zölzer 2011, DAFX: Digital Audio Effects, 2nd Ed., John Wiley & Sons [ISBN: 978-047066599]
| | Supplementary Book Resources |
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- McClellan, Schafer, Yoder 2003, Signal Processing First, 2nd Ed., Pearson [ISBN: 978-013090999]
| | This module does not have any article/paper resources |
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| Other Resources |
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- CD-ROM: Perry R. Cook 2002, Real Sound Synthesis for Interactive
Applications
, A K Peters, Massachusettes
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Module Delivered in
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