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Test 3 Review- Fall 2007

• Two-byte encoding of digitized sounds.
• Basic physics of sound: amplitude and frequency.
• Basic psychophysics: loudness and pitch. Logarithmic relationships between physical and psychophysical properties.
• Properties of digitized sound: length, sampling rate, samples.
• Looping through samples – both directly (getSamples) and by sample number.
• Increasing, decreasing and normalizing volume.
• Doubling and halving frequency.
• Reversing and copying sounds.
• Nyquist Theorem.

• Modules. What they are.
• Importing, and why it's necessary.
• Modules discussed in class: time, random, os.
• Dot notation for modules – e.g. random.choice(....)
• Dot notation for object methods – e.g. s.find(....) where s is a string.

• What text strings are. The difference e.g. between 10 and "10".
• Position notation (e.g. name[12]).
• Substrings (e.g. name[3:17]).
• Basic string methods.
• Searching for substrings (find and rfind). What they return.
• Concepts/history behind Eliza and the Turing Test
• While loops.

• What lists are. Differences between strings and lists.
• Position notation (e.g. students[34]).
• Basic list methods (e.g. reverse).
• Splitting a string into a list of words.

• Understand how HTML marks up text.
• Open and close tags (e.g.

  <table>...</table>

  ).
• Heading tags (h1, h2, etc.).
• List tags (unnumbered and ordered).
• Anchors and links to other web pages.
• Image tags and image anchors.
• Table tags, rows and table data.
• Alt tags and the difference between

  <i> and <em>, <b> and <strong>

  .

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• Hotspots #3 last edited on 5 May 2008 at 10:40 am by c-76-17-124-0.hsd1.ga.comcast.net