We use cookies to create the best experience for you. Keep on browsing if you are OK with that, or find out how to manage cookies.
Nobody downloaded yet

SUBBAND CODING - Essay Example

Comments (0) Cite this document
Abstract Sub-band coding (SBC), a method used to encode signals, is a more efficient form of transform coding strategy compared to other systems. The purpose of this paper is to describe a sub-band coding system intended for digitally encoded speech or audio signals…
Download full paper
Read TextPreview

Extract of sample

Download file to see previous pages... Index terms-- template, markup, discount I. INTRODUCTION The degree to which the bit rate can be reduced or compressed without impairing the quality of the decoded signal strongly determines the efficiency of an encoding technique. Typically, speech and audio signals have a high degree of redundancy which may be exploited to reduce the bit rate. In addition, the human auditory system possesses certain properties which may be useful in reducing the bit rate without compromising the quality of the decoded signal. 1 To take advantage of the aforementioned properties, a variety of techniques have been developed to efficiently represent speech and audio signals in digital form for either transmission or storage purposes. Since two different sub bands in each signal exist, the lower-frequency band and high-frequency band, and most of the energy in the signal is contained in the lower frequencies, it is possible to encode the lower-frequency band with more bits than the high-frequency band. Sub-band coding is a powerful approach where a speech or audio signal is broken down into several frequency bands and each band is digitally encoded separately. 2 II. Sub-Band coding implementation Figure 1 shows the basic configuration of the two- band sub-band design. The input signal represented as xi (n) is divided into two equally spaced frequency bands by low pass filter and high pass filter, represented as H1 and H2 respectively. After deviation, the sampling rate of each sub-band signal is reduced by a factor of 2. For instance, if the sampling rate for the input signal is Fs, then the sampling rate for each of the sub band after the deviation will be Fs/2. Reducing the signal by a factor of 2 follows every after frequency subdivision. By allocating a different number of bits per sample to the signal in the sub-bands, a reduction in the bit rate of the digitalized speech signal can be achieved. Meanwhile, the receiver converts the sub-band signals back to their original sampling rate by using the similar low pass and high pass filters as the input. The sum of two sub-band signals represented as xo (n) is the reconstructed signal of the input signal (Figure 1). Figure 1 After the input signal has been decomposed into two sub-band signals, each signal is then passed through the Quantizers. The resulting signals are represented as QL and QH in the figure above. Filter design is particularly important in achieving good performance in sub-band coding.2 III. implementing the system using sub-band coding A. Creating a New Paper For writing a paper from scratch using the IEEETRAN.DOT template, or creating an empty document in the template for cutting and pasting text from an existing file in some non-Word format, the following steps should be followed: 1. Copy IEEETRAN.DOT into the template’s directory, e.g., C:\MSoffice\Templates, so that it will be available from within Word. 2. Open Microsoft Word. 3. In the File menu, select New option. In the New dialog, select IEEETRAN.DOT. 4. IEEETRAN.DOT's startup macro will pop up a dialog box requesting to type in text for several of the paper’s elements. Some information may be typed in the box if all the information being asked is not yet available. In fact, the default text can be left in place for the meantime. These elements can always be edited later. Note that the macro will not be repeated when the user re-opens the document. The cursor should now be positioned near the top of the paper, indicating that the program is now ready to begin ...Download file to see next pagesRead More
Cite this document
  • APA
  • MLA
(“SUBBAND CODING Essay Example | Topics and Well Written Essays - 1000 words”, n.d.)
Retrieved from https://studentshare.org/tourism/1423061-subband-coding
(SUBBAND CODING Essay Example | Topics and Well Written Essays - 1000 Words)
“SUBBAND CODING Essay Example | Topics and Well Written Essays - 1000 Words”, n.d. https://studentshare.org/tourism/1423061-subband-coding.
  • Cited: 0 times
Comments (0)
Click to create a comment or rate a document
Cryptography & Coding
The main danger is regarding the communications that are offered nowadays mainly through the internet. The internet offers vital communication among tens of millions of people also is being more and more utilized like a tool intended for commerce. The security of the communication turned out to be an extremely significant matter to deal with.
14 Pages(3500 words)Essay
Payment Systems: Coding. Medical Coding Process
Among the five stages of medical coding process, ‘coding’ is the most important one. It will be difficult for a coder to complete the coding process if there is a lack of proper documentation. Medical coders use different coding systems in order to carry out different purposes.
1 Pages(250 words)Essay
Coding of the interview and theme analysis
Indeed. Coding is significant in facilitating easier retrieval of data for purposes of making comparisons and identifying any patterns that require further investigation (Taylor and Gibbs, 2010). In this context of coding, the process involves an evaluation of the different concepts and categories that applied in collecting data.
2 Pages(500 words)Essay
Electronic software applications (CODING)
One such application is the use of Natural language processing, which holds a great deal of promise for the coding process by assisting in further automation. NLP is the ability to use automatic procedures to analyze data captured in ordinary linguistic terms, based on mathematical algorithm to develop input.
3 Pages(750 words)Essay
Medication Errors V.S Bar Coding
Medication errors occur at an alarming rate, and the majority of no intercepted medication errors originate at the point of care when a nurse mistakenly administers a medication (Wittwer 2004). Medication administration in the acute care inpatient setting is a complex system requiring coordination among physicians who order the medications, pharmacists who verify and dispense the medications and nursing personal who administer medications to the patients.
4 Pages(1000 words)Essay
Observational Studies and Coding
in Manhattan should be used. The researcher spent 30 minutes in each of three locations – just outside the Metropolitan Museum of Art, at the Times Square intersection, and between the 52nd and the 53rd street. At each of these locations, the
1 Pages(250 words)Essay
Coding also is vital because it acts as a protective cover for patients. This is in the sense that, records are kept that provide the medical history of patients and
2 Pages(500 words)Essay
CPT and ICD-9 Coding
Current Procedural Terminology (CPT) manual is used to enable healthcare providers to communicate effectively and efficiently regarding diagnosis issues. The manual requires the user to input a code according to the information required. This manual consists of 6 sections. 2.
1 Pages(250 words)Essay
Coding Interview Data Using Invivo Software
Moreover, he is an excellent husband because of the love he has towards his family. He is also loyal, and an inspirational figure. MNC - The first respondent met Hillary Rodham Clinton at valley Mountain
3 Pages(750 words)Essay
National Correct Coding Initiative Edit
All the claims are worked against CCI tables. The NCCI (National Correct Coding Initiative) is a CMS program, which was implemented in 1996. This NCCI by CMS is meant to promote the methodologies of national correct
3 Pages(750 words)Essay
Let us find you another Essay on topic SUBBAND CODING for FREE!
Contact us:
Contact Us Now
FREE Mobile Apps:
  • About StudentShare
  • Testimonials
  • FAQ
  • Blog
  • Free Essays
  • New Essays
  • Essays
  • The Newest Essay Topics
  • Index samples by all dates
Join us:
Contact Us