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- Accessible objected-oriented
- Jbs2060-a player piano simulator
This module explains how to write a program that simulates a player piano in a format that is accessible to blind students.
Table of contents
Preface
This module is part of a collection titled
Accessible
Objected-Oriented Programming Concepts for Blind Students using Java .
It explains how to write a program that simulates a player piano in a formatthat is accessible to blind students.
Here are some sample melodies produced
by the program.
(You should be able to play these audio files with any
standard media player that can handle the AU file type. In case you are onthe OpenStax site and you are unable to download the audio files, click the
Legacy Site
link at the top of this page
to switch over to the same module on the Legacy site. You should be able todownload the
audio files from there .)
Click
here to download a zip file containing the text files
and the Windows batch files needed to playthese melodies. The zip file also contains the audio files of type AU listed
above.
Viewing tip
I recommend that you open another copy of this module in a separate
browser window and use the following links to easily find the listings while you are reading about them.
Listings
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Listing 1 . Beginning of the class named MusicComposer09.
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Listing 2 . The main method.
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Listing 3 . Beginning of the constructor for the MusicComposer09 class.
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Listing 4 . Get a melody array.
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Listing 5 . Beginning of the PlayerPiano01 class.
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Listing 6 . The constructor for the PlayerPiano01
class.
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Listing 7 . Beginning of the getMelody method.
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Listing 8 . Get and save treble clef note data.
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Listing 9 . Get and save bass clef note data.
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Listing 10 . Compute the length of each clef in beats.
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Listing 11 . Check for treble and bass clefs of different lengths.
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Listing 12 . Convert treble notes to amplitude values.
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Listing 13 . Convert bass notes to amplitude values.
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Listing 14 . Populate and return the melody array with stereo data.
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Listing 15 . Populate and return the melody array with monaural data.
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Listing 16 . Beginning of the getPiano method.
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Listing 17 . Store the current note and compute the frequency of the next note.
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Listing 18 . Construct the name of the next note.
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Listing 19 . Beginning of the method named makeMusic.
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Listing 20 . Process each array containing duration and note names in the ArrayList object.
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Listing 21 . Process each sample.
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Listing 22 . Process each piano key that is
pressed.
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Listing 23 . Use a scale factor to shape the note.
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Listing 24 . The class named AudioFormatParameters01.
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Listing 25 . The class named AudioPlayOrFile01.
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Listing 26 . The class named AudioSignalGenerator02.
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Listing 27 . The class named MusicComposer09.
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Listing 28 . The class named PlayerPiano01.
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Listing 29 . The file named GreensleevesTreble.txt
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Listing 30 . The file named GreensleevesBass.txt
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Listing 31 . The file named Greensleeves.bat.
Questions & Answers
how does Neisseria cause meningitis
is the branch of biology that deals with the study of microorganisms.
studies of microbes
Louisiaste
when we takee the specimen which lumbar,spin,
How bacteria create energy to survive?
Bacteria doesn't produce energy they are dependent upon their substrate in case of lack of nutrients they are able to make spores which helps them to sustain in harsh environments
_Adnan
But not all bacteria make spores, l mean Eukaryotic cells have Mitochondria which acts as powerhouse for them, since bacteria don't have it, what is the substitution for it?
Muhamad
they make spores
Louisiaste
what is sporadic nd endemic, epidemic
the significance of food webs for disease transmission
Abreham
food webs brings about an infection as an individual depends on number of diseased foods or carriers dully.
Mark
explain assimilatory nitrate reduction
Assimilatory nitrate reduction is a process that occurs in some microorganisms, such as bacteria and archaea, in which nitrate (NO3-) is reduced to nitrite (NO2-), and then further reduced to ammonia (NH3).
Elkana
This process is called assimilatory nitrate reduction because the nitrogen that is produced is incorporated in the cells of microorganisms where it can be used in the synthesis of amino acids and other nitrogen products
Elkana
Examples of thermophilic organisms
Give Examples of thermophilic organisms
Shu
advantages of normal Flora to the host
Prevent foreign microbes to the host
Abubakar
they provide healthier benefits to their hosts
ayesha
They are friends to host only when Host immune system is strong and become enemies when the host immune system is weakened . very bad relationship!
Mark
cell is the smallest unit of life
Fauziya
cell is the smallest unit of life
Akanni
cell is the structural and functional unit of life
Hasan
is the fundamental units of Life
Musa
what are emergency diseases
There are nothing like emergency disease but there are some common medical emergency which can occur simultaneously like Bleeding,heart attack,Breathing difficulties,severe pain heart stock.Hope you will get my point .Have a nice day ❣️
_Adnan
define infection ,prevention and control
Innocent
I think infection prevention and control is the avoidance of all things we do that gives out break of infections and promotion of health practices that promote life
Lubega
Heyy Lubega hussein where are u from?
_Adnan
which site have a normal flora
Many sites of the body have it
Skin
Nasal cavity
Oral cavity
Gastro intestinal tract
Safaa
skin,Oral,Nasal,GIt
Sadik
How can Commensal can Bacteria change into pathogen?
Sadik
How can Commensal Bacteria change into pathogen?
Sadik
what are the advantages of normal Flora to the host
Micheal
what are the ways of control and prevention of nosocomial infection in the hospital
Micheal
part of a tissue or an organ being wounded or bruised.
Wilfred
what term is used to name and classify microorganisms?
Binomial nomenclature
adeolu
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Source:
OpenStax, Accessible objected-oriented programming concepts for blind students using java. OpenStax CNX. Sep 01, 2014 Download for free at https://legacy.cnx.org/content/col11349/1.17
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