2.6 Data representation (Sound)

What is measured during the sampling of an analogue sound?

• Wavelength
• Amplitude
• Distance
• Length of the sound

When converting an analogue sound into digital, what does "sampling rate" mean?

• How many samples of the sound is taken per second.
• How many samples of the sound is taken per minute.
• It is the gap between each of the points where the analogue sound is sampled.
• It is the number of bits used for each sample.

When converting an analogue sound into digital, what does "sampling interval" mean?

• How many samples of the sound is taken per second.

• How many samples of the sound is taken per minute.

• It is the gap between each of the points where the analogue sound is sampled.

• It is the number of bits used for each sample.

When converting an analogue sound into digital, what does "sample size" mean?

• How many samples of the sound is taken per second.

• How many samples of the sound is taken per minute.

• It is the gap between each of the points where the analogue sound is sampled.

• It is the number of bits used for each sample.

When converting an analogue sound into digital, making the sample interval smaller will mean

• Less samples will be taken, therefore the sound will be less like the analogue recording. However the file size will be smaller.
• More samples will be taken, therefore the sound will be closer to the analogue recording. However the file size will be smaller.
• More samples will be taken, therefore the sound will be closer to the analogue recording. However the file size will be larger.
• Less samples will be taken, therefore the sound will be less like the analogue recording. However the file size will be larger.

When converting an analogue sound into digital, making the sample interval larger will mean

• Less samples will be taken, therefore the sound will be less like the analogue recording. However the file size will be smaller.
• More samples will be taken, therefore the sound will be closer to the analogue recording. However the file size will be smaller.
• More samples will be taken, therefore the sound will be closer to the analogue recording. However the file size will be larger.
• Less samples will be taken, therefore the sound will be less like the analogue recording. However the file size will be larger.

When converting an analogue sound into digital, increasing the sample rate will mean

• Less samples will be taken, therefore the sound will be less like the analogue recording. However the file size will be smaller.
• More samples will be taken, therefore the sound will be closer to the analogue recording. However the file size will be smaller.
• More samples will be taken, therefore the sound will be closer to the analogue recording. However the file size will be larger.
• Less samples will be taken, therefore the sound will be less like the analogue recording. However the file size will be larger.

When converting an analogue sound into digital, decreasing the sample rate will mean

• Less samples will be taken, therefore the sound will be less like the analogue recording. However the file size will be smaller.
• More samples will be taken, therefore the sound will be closer to the analogue recording. However the file size will be smaller.
• More samples will be taken, therefore the sound will be closer to the analogue recording. However the file size will be larger.
• Less samples will be taken, therefore the sound will be less like the analogue recording. However the file size will be larger.

How does a computer convert analogue music into a digital file?

• The analogue sound is inputted and samples of the sound are taken at regular intervals. These samples are stored as binary.
• The analogue sound is inputted and the wavelength is measured for the whole recording. This measurement is stored as binary.

When converting an analogue sound into digital, the bigger the sample size means

• A wider range of sounds can be used. However this will make the file size larger because more binary will be used per sample.

• The song will be much longer in length and the file size will be larger because more binary will be used per sample.

• A wider range of sounds can be used. However this will make the file size smaller because less binary will be used per sample.

• The wavelengths are much longer, making the sound quality better. However this will make the file size smaller because less binary will be used per sample.