Digital Signals

Question 1

How much bandwidth is required for CD-quality music at 24 bits in stereo?

Audio CD sampling rate = 44.1kHz

Answer 1

44,100 (CD sampling rate) x 24 (bits) x 2 (stereo) = 2.1 Mbps

Question 2

You need to stream 10 channels of 96 kHz audio, you have 25Mbps available. What’s the highest bit depth you can use?

Answer 2

96,000 (Sampling rate) x (?) x 10 (Channels) = 25 Mbps

                          26-bit maximum bit rate

Question 3

You currently have the capacity to stream 30 channels of 48 kHz, 24-bit audio. How many channels could you stream if you upgraded to 96k Hz, 24-bit audio?

Answer 3

15 Channels

Question 4

This compression is common for networked AV

Answer 4

Lossy compression (discards unneeded data)

Question 5

This compression technique is used when more fidelity and accuracy is needed

Answer 5

Lossless