Question

A high quality
audio signal
is limited to 10 kHz. It is to be
transmitted using a 7 bit
code. Calculate the required
bit rate which needs to be
supported by the channel.​

Answer 1

Answer:

8000 samples per second

A voice signal is essentially limited to a band from about 100 Hz to 3100 Hz and frequencies outside this band do not impact voice intelligibility. In PCM, the voice signal is often low filtered at 3.1 kHz and then sampled at a rate of 8000 samples per second.