⏱️ Do It Now
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Y10 AU – P9 – Sound Data
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📝 Do It Now |
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Answer each of the following: (1) Explain the differences between Extended ASCII and Stanadrd ASCII (2) Give the name of another character set developed after Extended ASCII (3) Explain why the other character set was developed |
🛝 Lesson Slideshow
🎓 Lesson Activities
- Activity 1
- Activity 2
- Activity 3
- Plenary
Amplitude and Frequency Generator
(1) Experiment with different frequencies and amplitudes.
(2) Using several screenshots of the wave generator to help you, outline what the frequency and amplitude of a sound wave are.
Interactive Sine Sound Wave
Pitch
Medium Pitch
Amplitude Effect
Medium Loudness
Wavelength
0.78 m
Wave Speed
343 m/s
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✍️ Activity 2(1) Explain what is meant by a sound sample.Describe how sample rate affects the quality of a digital sound recording. (2) Describe the difference between sample rate and sample interval. Explain how changing one affects the other and the resulting digital recording. (3) CD-quality audio is sampled at 44,100 Hz. Explain what this value represents and discuss why taking more samples per second creates a more accurate digital representation of an analogue sound wave. |
Sound File Size Challenge Score: 0
A sound file has:
- Duration:
- Sample Rate:
- Bit Depth:
Calculate the file size in .
Give your answer to 2 decimal places (remember to round)Complete this quiz: GCSE Sound Sampling and Audio Files
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