audio has become an integral part of our lives. Nearly all of the transmission of speech signals over telephone channels is currently digital. Moreover, digital audio recording in the form of compact disks (CDs) have become very popular. This assignment exposes the student to a real world applications of digital communication in digital audio transmission and recoding. In doing so the student shall acquire skills to understand the real world requirements, critically review the existing techniques and write a technical report based on his or her investigation. 2. Requirements This assignment shall address the following three areas:  Requirements: In this section the student is required to analyze the following for digital audio in telephone transmission systems; 1) bandwidth of speech signals and the required sampling rates to avoid aliasing, 2)required number of bits per sample to achieve voice quality in telephony, 3)typical bit rates used for local loops as well as on trunked lines; In this section the student is also required to analyze the following for digital audio recording ;1) bandwidth of high quality audio and the required sampling rates, 2)required number of bits per sample to achieve a high signal to quantization noise level for high quality audio.  Investigation of current methods: In this section the student is required to review and analyse waveform coding techniques used in digital audio transmission and recording at present. At least PCM and DPCM methods need to be covered.  Investigation of new developments: In this section the student is required to do some research into the latest developments in waveform coding techniques for digital audio transmission and recoding. BN301 Industry Based Project 1 Page 2 of 3 Suggested approach: 1. The student is required to analyse the requirements for digital audio transmission. 2. The student is encouraged to do a literature review on current practices of waveform coding for digital audio transmission and recoding. 3. The student is required to write a technical report on requirements, review and analysis on the use of waveform coding techniques in digital audio transmission and recoding. Submission Guidelines: Your assignment should be completed according to the General Guidelines for Presentation of Academic Work. 1. successful completion of required tasks 2. quality of figures a. comments b. meaningful names 3. accompanying documentation including a. table of contents and page numbers b. a front page - indicating your name. c. list of references used (APA style) – please specify if none have been used. 4. The assignment must be submitted in soft (electronic) copy under provided MIT intra site. The page numbers of the assignment must be clear on each page. Marking criteria: Marks are allocated as follows: Section to be included in the report Description of the section Marks Scope A high level description of the case study 5 Requirements Requirement analysis for digital audio transmission and recoding 20 Current practices Literature review of the current waveform coders covering at least PCM and DPCM 40 Recent developments What new techniques are available and how they claim to overcome problems in the current methods 25 Reference style 10 Poor writing Inadequate structure, careless presentation, or the report exceeds the word limit by more or less than 10% -30 Plagiarism Type of plagiarism - Copy from other student - Copy from internet source/textbook - Copy from other sources -100 Total 100 Extensions: Requests for an extension, accompanied by supporting documentation,