The quality of sound produced from the data stored on an optical disk depends on the sampling resolution. Describe what is meant by sampling resolution.

9626_s23_qp_11

THEORY

2023

Paper 1, Variant 1

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Audio files can be digitised with different bit rates. The bit rate of an audio file can appear to affect the quality of the sound when it is listened to. Explain how you can affect the perceived quality of the sound stored in the audio file by changing the bit rate.

9626_w17_qp_32

THEORY

2017

Paper 3, Variant 2

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Describe the effects of the different methods of compression on audio quality.

9626_w24_qp_11

THEORY

2024

Paper 1, Variant 1

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Sound editing software has a number of features that can be used to edit audio files. State two reasons why an audio clip may need to be trimmed. Reason 1 Reason 2 State one reason why separate audio clips may need to be spliced together. Describe the term equalisation when applied to audio clips.

9626_s24_qp_12

THEORY

2024

Paper 1, Variant 2

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Paul and his team of programmers are writing software for a new project for a large company. Every month, Paul and the programmers report to the company directors by means of a video-conference. Describe how Paul would set up and run this video-conference, assuming that the necessary equipment and software has already been purchased and tested.

9626_w17_qp_13

THEORY

2017

Paper 1, Variant 3

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Sound editing software is used to input or record sounds, save them and output the results to various speaker devices. Describe the use of other features found in sound editing software. Each use must be different.

9626_w21_qp_12

THEORY

2021

Paper 1, Variant 2

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A company has its own website and wishes to add a music soundtrack. Its web designers will need to edit the soundtrack before uploading it. They will need to use sound editing software. Describe, including their effects, the following aspects of sound editing software. Sampling rate Sampling resolution Trimming

9626_s18_qp_11

THEORY

2018

Paper 1, Variant 1

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Chow uses sound editing software to vary the sampling rate in an audio file. Describe what is meant by sampling and how the sampling rate affects audio file sizes.

9626_w17_qp_11

THEORY

2017

Paper 1, Variant 1

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Chow uses sound editing software to vary the sampling rate in an audio file. Describe what is meant by sampling and how the sampling rate affects audio file sizes.

9626_w17_qp_12

THEORY

2017

Paper 1, Variant 2

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Back-up software is a type of utility software. A network manager wants to back up the data stored on a server. Describe, with reasons, the steps the manager takes when setting up this process. Some of the data to be backed up consist of audio files. The network manager will compress these before starting the back-up process. Different methods of compression can be used. Describe these methods giving the effects on the audio files of using each method.

9626_s23_qp_11

THEORY

2023

Paper 1, Variant 1

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