Gcse ocr Computer-Science-Data-Representation-Assessment-Test unit 8
COMMENTS
5. Representation of sound
Understand how sound is sampled and stored in digital form. Be able to represent a short sound file in binary. Explain how sampling intervals and resolution affect the size of a sound file. Explain the trade-off between file size and the quality of playback. Understand the concept of MIDI file format, MP3 and MP4 files; Worksheet
T5 Representing sound
Describe the digital representation of sound in terms of sampling rate and resolution. Describe the principles of operation of an analogue to digital converter and a digital to analogue converter. Understand and apply the Nyquist theorem. Calculate sound sample sizes in bytes. Describe the purpose and advantages of MIDI and the use of event ...
Unit 8 Data Representation Flashcards
Unit 8 Data Representation. Flashcards. Learn. Test. Match. Flashcards. Learn. Test. Match. Created by. Shifaa2020. Terms in this set (6) Compression •Reduces file size •Mostly used with sound, image and video file types •Two types. Lossy Compression (JPG, GIF, MP3) •Permanently removes some data •Recreates the file using the ...
Data representation
The most common sampling rate for sound files is 44.1 khz. 8. Multiple Choice. Higher bit rates usually improve the sound quality and result in smaller file size. Higher bit rates usually improve the sound quality but result in larger file size. To record a sound into binary format, ADC will be applied rather than DAC. 9.
T5 Sound
Understand how sound is sampled and stored in digital form. (1.2.2) Be able to represent a short sound file in binary. (1.2.2) Explain how sampling intervals and resolution affect the size of a sound file using the terms (1.2.2) : sample rate; sample resolution (bit-depth). Explain the trade-off between file size and the accuracy of the recording.
T5 Homework 5 completed td
1. The first sound pattern below has been recorded three times using different digital sampling. settings. Calculate the file size of the each of the recordings A to C: (Show your workings) A: 6x4x3= 72 bits. B: 3x4x3= 36 bits. C: 6x4x3= 72 bits. 1. Recording A.
Representing Sound
The process begins by measuring the loudness ( amplitude) of the analogue sound wave at a point in time, these are called samples. The higher the amplitude, the louder the sound. Each measurement ( sample) generates a value which can be represented in binary and stored. Using the samples, a computer is able to create a digital version of the ...
computing unit 8 data representation Flashcards
A computer stores data and instructions in binary form. a. Explain why computers use binary. Computers only understand on or off, represented by 1 and 0. Computers operate using logic circuits which only have two states, true or false. Calculate the denary value of the 8-bit number 01101001. Show your working.
Resources > Computer Science > Gcse Aqa > 8525 Unit 3 Data ...
Lesson 5 Representing sound; Lesson 6 Data compression; Lesson 7 Assessment; There are 6 worksheets, 6 homework tasks, and an examination-style assessment test, each with answers included in this unit. How to order. 1. Add individual units to a draft order or download a blank order form below to complete manually. 2. Using a draft order you can ...
Resources > Computer Science > Igcse > 0478 Unit 1 Data Representation
Lesson 5: Sound; Lesson 6: Images; Download sample lesson above; Lesson 7: Data storage and compression; Assessment; There are 7 worksheets, 7 homework tasks, and an assessment test, each with answers included in this unit. How to order. 1. Add individual units to a draft order or download a blank order form below to complete manually. 2.
Data Representation and Interpretation Worksheets
group activities. homework. This teaching resource pack includes worksheets addressing the following concepts: data representation and interpretation. Answer sheets are also provided. Download options include: the year level displayed at the top of the sheet. no year level displayed at the top of the sheet to use for differentiation.
Images booklet
5. How many colour combinations will 4 bits provide? Show your working. 42 = 8 TASK 1: Converting a bit pattern into a monochrome image Convert the following bit pattern into an 8x8 icon: TASK 2: 1. Calculate the file size of the following images: Image Resolutio n Number of colours Colour depth in bits File size in bits File size in Bytes ...
Resources > Computer Science > Gcse Ocr > J277 Unit 2 Data
The GCSE units have been written to comprehensively satisfy the specification the OCR J277 Computing GCSE. Each unit delivers a complete solution comprising: PowerPoint slides for each lesson. Detailed lesson plans. Learning objectives and outcomes. Worksheets and homework activities with answers. End-of-unit Assessment test with answers.
IMAGES
COMMENTS
Understand how sound is sampled and stored in digital form. Be able to represent a short sound file in binary. Explain how sampling intervals and resolution affect the size of a sound file. Explain the trade-off between file size and the quality of playback. Understand the concept of MIDI file format, MP3 and MP4 files; Worksheet
Describe the digital representation of sound in terms of sampling rate and resolution. Describe the principles of operation of an analogue to digital converter and a digital to analogue converter. Understand and apply the Nyquist theorem. Calculate sound sample sizes in bytes. Describe the purpose and advantages of MIDI and the use of event ...
Unit 8 Data Representation. Flashcards. Learn. Test. Match. Flashcards. Learn. Test. Match. Created by. Shifaa2020. Terms in this set (6) Compression •Reduces file size •Mostly used with sound, image and video file types •Two types. Lossy Compression (JPG, GIF, MP3) •Permanently removes some data •Recreates the file using the ...
The most common sampling rate for sound files is 44.1 khz. 8. Multiple Choice. Higher bit rates usually improve the sound quality and result in smaller file size. Higher bit rates usually improve the sound quality but result in larger file size. To record a sound into binary format, ADC will be applied rather than DAC. 9.
Understand how sound is sampled and stored in digital form. (1.2.2) Be able to represent a short sound file in binary. (1.2.2) Explain how sampling intervals and resolution affect the size of a sound file using the terms (1.2.2) : sample rate; sample resolution (bit-depth). Explain the trade-off between file size and the accuracy of the recording.
1. The first sound pattern below has been recorded three times using different digital sampling. settings. Calculate the file size of the each of the recordings A to C: (Show your workings) A: 6x4x3= 72 bits. B: 3x4x3= 36 bits. C: 6x4x3= 72 bits. 1. Recording A.
The process begins by measuring the loudness ( amplitude) of the analogue sound wave at a point in time, these are called samples. The higher the amplitude, the louder the sound. Each measurement ( sample) generates a value which can be represented in binary and stored. Using the samples, a computer is able to create a digital version of the ...
A computer stores data and instructions in binary form. a. Explain why computers use binary. Computers only understand on or off, represented by 1 and 0. Computers operate using logic circuits which only have two states, true or false. Calculate the denary value of the 8-bit number 01101001. Show your working.
Lesson 5 Representing sound; Lesson 6 Data compression; Lesson 7 Assessment; There are 6 worksheets, 6 homework tasks, and an examination-style assessment test, each with answers included in this unit. How to order. 1. Add individual units to a draft order or download a blank order form below to complete manually. 2. Using a draft order you can ...
Lesson 5: Sound; Lesson 6: Images; Download sample lesson above; Lesson 7: Data storage and compression; Assessment; There are 7 worksheets, 7 homework tasks, and an assessment test, each with answers included in this unit. How to order. 1. Add individual units to a draft order or download a blank order form below to complete manually. 2.
group activities. homework. This teaching resource pack includes worksheets addressing the following concepts: data representation and interpretation. Answer sheets are also provided. Download options include: the year level displayed at the top of the sheet. no year level displayed at the top of the sheet to use for differentiation.
5. How many colour combinations will 4 bits provide? Show your working. 42 = 8 TASK 1: Converting a bit pattern into a monochrome image Convert the following bit pattern into an 8x8 icon: TASK 2: 1. Calculate the file size of the following images: Image Resolutio n Number of colours Colour depth in bits File size in bits File size in Bytes ...
The GCSE units have been written to comprehensively satisfy the specification the OCR J277 Computing GCSE. Each unit delivers a complete solution comprising: PowerPoint slides for each lesson. Detailed lesson plans. Learning objectives and outcomes. Worksheets and homework activities with answers. End-of-unit Assessment test with answers.