0
24 voice signals are to be transmitted over a single phone line. What is the bandwidth required if the standard analog-to-digital sampling rate is used and each sample is converted into an 8bit value?
Wiki User
∙ 11y ago
Voice comes in 8000 Hz frequency, so 16000 samples required each seconds.
1 sample if of 8 bits.
16000 sample if of 128000bits.
these bits is send per second.
so bandwidth required is 128kbs for single voice.
for 24 it is 24 x 128 kbps
= 3072 kbps
= 3.1 mbps
Wiki User
∙ 12y ago
Wiki User
∙ 11y ago4,000 Hz is the standard transmission frequency for voice.
4,000 Hz * 2 = 8,000 samples per second (sps)
8,000 sps * 8 bits per second (bps) = 64,000 bps
24 * 64,000 bps = 1,536,000 bps
Add your answer:
Earn +20 pts
Advantages of large bandwidth?
A very usefull advantage is the exchange of SNR(signal to noise ratio) with Bandwidth... as on increasing the bandwidth the power required for transmission get reduced to a great extent.. is given by the formula SNR2 ~ (SNR1) B1/B2 AS we can see on increasing the bandwidth the SNR is reduced greatly
Why high frequency carrier is required for a communication system?
to shift the frequency of information signal ,at the frequency domain to a higher frequency ...so the information can be transmitted to the receiver .
What are the Advantages of analog and digital communications?
Disadvantage of Analog Communication: 1)Analog Communication systems are costlier than digital communication system. 2)Less Security in Analog Communication 3)More prone to noise interference. Advantage of Analog Communication: 1)Transmission bandwidth required is less. 2)No need of synchronization. Advantage of Digital Communication: 1)Digital Communication systems are simpler and cheaper. 2)Using data encryption only permitted user are allowed to detect the transmitted data. 3)Since in Digital Communication, channel coding is used, therefore a large amount of errors may be detected 4)Since transmitted signal is digital in nature,large amount of noise tolerance may be tolerated Disadvantage of Digital Communication: 1)More transmission bandwidth required. 2)Digital Communication needs synchronization in case of synchronous modulation.
How do you calculate spectral efficiency?
1.Find the Fourier Transform of the pulse used to transmit data over the channel. 2.Determine the bitrate of the signal by the modulation format (QPSK for example has 2bits/symbol so 1 symbol per second would equate to 2 bits/s) 3.The first null in the Fourier transform is the required bandwidth (~0.75 x bitrate in optical communications, depends on channel) 4. Divide bits/s by the required bandwidth to find the spectral efficiency.
A voice signal sample is stored as one byte Frequency range is 16 Hz to 20 Hz What is the memorysize required to store 4 minutes voice signal?
It's 1920Bytes. As the bandwidth (f2-f1) is 20-16=4Hz. The sampling frequency should be twice the bandwidth (2B). the sampling frequency is 8Hz= 8 samples= 8 cycles/second. 4 minutes=(4*60) =240 Seconds 1sample->1 Byte 1Second->8 Samples 240 Seconds->(240*8) = 1920 Samples
What is bandwidth required for e-gov application?
How much bandwidth required for e-gov application?
What are the disadvantages of fsk?
required larger bandwidth
The relationship of the bandwidth required for double-sideband emitted carrier AM to the bandwidth of the modulating signal of?
In Amplitude Modulation (AM), specifically in the case of Double Sideband Suppressed Carrier (DSB-SC) or Full Carrier (DSB-FC) AM, the required bandwidth is twice the bandwidth of the modulating signal. If the modulating signal has a bandwidth of B Hz, the bandwidth required for AM would be 2B Hz. This is because both the upper and lower sidebands of the carrier wave are utilized in the modulation process, each consuming bandwidth equivalent to the original signal.
Which is needed to implement to guarantee the required bandwidth for VoIP?
QoS
What is transmitted illumination?
transmitted light is required for the purpose of examining internal features of gemstone inclusion.
How much bandwidth is required to listen to Essex FM online?
There is no information available as to how much bandwidth Essex FM online radio takes. It is not as much as required, but how much it takes up is what the worry is for. Most internet providers have a limit as to how much bandwidth you are allowed to use in a month.
Given a bit rate of 1200 bps what is the minimum required bandwidth?
600 Hz
Advantages of large bandwidth?
A very usefull advantage is the exchange of SNR(signal to noise ratio) with Bandwidth... as on increasing the bandwidth the power required for transmission get reduced to a great extent.. is given by the formula SNR2 ~ (SNR1) B1/B2 AS we can see on increasing the bandwidth the SNR is reduced greatly
Why high frequency carrier is required for a communication system?
to shift the frequency of information signal ,at the frequency domain to a higher frequency ...so the information can be transmitted to the receiver .
Find the minimum bandwidth for FDM five sources each requiring 400Hz 200Hz guard band per channel?
no of sources: 5 bandwidth required for each source= 400 Hz no of guard times= 5 bandwidth of each guard time = 200 Hz minimum bandwidth = 5 *400 + 5*200 Hz
How many signal levels are required when the bandwidth is 2MHz and signal to noise ratio is 8 dB?
Use Nyquist and Shannon Heartly theorem to solve this Nyquist theorem says that Channel Capacity C = 2 * Bandwidth * log2 (Number of Signal levels) Shannon Heartly theorem says that Channel Capacity C = Bandwidth * log2( 1 + SNR) Important points to consider while solving Bandwidth is expressed in Hz SNR is expressed in dB it must be converted using dB value = 10 log10(SNR) (10 dB = 10, 20 dB = 100, 30 dB = 1000 etc..)
What is bandwidth required for AM signal?
With full double sideband AM the bandwidth of the modulated signal is twice that of the baseband information signal. With suppressed carrier single sideband AM the bandwidth of the modulated signal is identical to that of the baseband information signal. With vestigial sideband AM the bandwidth of the modulated signal is somewhere between the above two cases, depending on how much of the vestigial sideband is included.
