computer science

IMelody

IMelody is a computer science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand IMelody rather than just read about it. In short: iMelody is a non-polyphonic ringtone exchange object format, used for mobile phones [Extension: .imy], defined by Ericsson and Sony Ericsson together with other manufacturers and is based on Ericsson's proprietary eMelody format. This ringtone format also supports codes that can control the vibration motor, backlight, LED lights and volume of the device.

Key takeaways

IMelody belongs to computer science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect IMelody to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of IMelody from memory before moving on to harder problems.

Reference excerpt

iMelody is a non-polyphonic ringtone exchange object format, used for mobile phones [Extension: .imy], defined by Ericsson and Sony Ericsson together with other manufacturers and is based on Ericsson's proprietary eMelody format. This ringtone format also supports codes that can control the vibration motor, backlight, LED lights and volume of the device. The iMelody format was made because the eMelody had some musical limitations.

Transferring melody to mobile phones In order to transfer these ringtones to a mobile phone, one can simply send an SMS message with the iMelody/eMelody text as the text of the message, or make a plain text file containing the iMelody/eMelody text, using the extension of either .imy for iMelody or .emy for eMelody, and transfer the file to the mobile phone by Bluetooth, IrDA (infrared), or by a data cable. The file could also be attached to an MMS message or an e-mail message.

iMelody MIME: "text/x-iMelody" or "audio/iMelody" Extension: ".imy" Here is an example of an advanced ringtone in the iMelody format, this is a silent ringtone that only makes the phone's vibrating motor vibrate constantly:

BEGIN:IMELODY VERSION:1.2 FORMAT:CLASS1.0 BEAT:25 MELODY:vibeonr2vibeonr2vibeon (r2vibeonvibeonr2vibeonr2vibeonr2vibeonr2vibeonr2vibeonr2vibeonr2vibeonr2vibeonr2vibeonr2vibeonr2vibeonr2vibeonr2vibeonr2vibeonr2vibeonr2ledonr2vibeonr2vibeon END:IMELODY

Another example of an advanced ringtone, which makes the vibrating motor vibrate constantly, the backlight of the phone's display blink and plays a simple tone:

BEGIN:IMELODY VERSION:1.2 FORMAT:CLASS1.0 BEAT:900 STYLE:S1 MELODY:(vibeonbackoff*6c5ledon*6d5ledoff*6e5ledon*6f5ledoff*6g5ledon*6a5ledoff*6b5ledon*6a5ledoff*6g5*6f5*6e5*6d5*6c5backon*6d5*6e5*6f5*6g5*6a5*6b5*6a5*6g5*6f5*6e5*6d5@0) END:IMELODY

eMelody MIME: "text/x-eMelody" or "audio/e-melody" Extension: ".emy" Here is an example of a ringtone in eMelody format:

BEGIN:EMELODY VERSION:1.0 NAME:Test melody 1 COMPOSER:John Smith MELODY:+f+a+fa(b)bdcC+GA+d+#c+dfg+daea+d+#c+e+f+e+fa(b)bdC+EA+d+#c+dfgba+d+#C END:EMELODY

External links Specification (non-official page) iMelody format iMelody Maker (in Spanish)

References

Worked examples

Example 1 — a first encounter with IMelody

Start with the simplest possible case. Write down what IMelody claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In computer science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to IMelody before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about IMelody ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of IMelody

In research: IMelody appears in computer science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses IMelody in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: IMelody is common in secondary-school and first-year university syllabi. It links to neighbouring topics Computer file formats, Mobile telecommunications standards, Musical notation, so understanding it makes those chapters shorter.
In everyday life: Look for IMelody outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study IMelody in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what IMelody means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain IMelody out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is IMelody in simple terms?

Why does IMelody matter?

Because it connects several computer science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study IMelody?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on IMelody.