0
What else can I help you with?
What are the basic characteristics of speech signal?
1)Nonuniform probability distribution of speech amplitude. 2)Nonzero autocorrelation between successive speech samples. 3)Nonflat nature of the speech spectra. 4)The most basic:speech is band limited.
What is a carrier reinsertion oscillator?
A carrier reinsertion oscillator is an electronic circuit used in a radio receiver that is designed to receive single side band carried suppressed radio transmissions. As suggested by the name, in a single side band carried suppressed signal, the carrier signal is suppressed (not transmitted) to save power and/or bandwidth. Before the single side band carried suppressed signal can be decoded to extract the original audio signal, the carrier must first be reinserted. This must be done accurately, otherwise the recovered audio signal will be unintelligible.
Why is it important to band limit a signal before sampling it?
Band limiting a signal before sampling is crucial to prevent aliasing, which occurs when higher frequency components of the signal are misrepresented as lower frequencies due to insufficient sampling rates. According to the Nyquist-Shannon sampling theorem, a signal must be sampled at least twice its highest frequency to accurately capture its information. By band limiting, we ensure that only the relevant frequency components are present, allowing for accurate reconstruction of the original signal after sampling. This helps maintain the integrity and quality of the sampled data.
Why FM transmission is limited to line of sight?
the high frequency, it is in VHF band.
Why do one go for attenuator while filter has attenuation band?
Attenuator means which limits the voltage of a signal to some particular level but here filter attenuation means which limits some particular frequencies(i.e., particular Band)
Can a signal be time-limited and band-limited at the same time?
No, a signal that is band limited is not time-limited while a signal that is time-limited isnot band limited.
Why a signal that is band limited is not time-limited while a signal that is time-limited is not band limited Improve Answer Discuss the question Can a signal be time-limited and band-limited at th?
A band-limited signal is one in which the Fourier transform is zero above a certain frequency. In other words it's a signal that ahas a finite frequency content. The simplest case is a pure sinusoidal signal, whose Fourier transform consists of a delta function centred on the frequency of the signal. A band-limited signal can be reconstructed exactly if it is sampled at at more than twice the maximum frequency present in the signal. A time-limited signal is a signal that is zero above a finite. An example of this would be a short pulse. The reason a signal cannot be both band-limited or time-limited is due to their relationship via the Fourier transform. One can show it is impossible for the Fourier transform of a signal with compact support ie either time or band-limited, to also have compact support. A time-limited signal must have a continuous frequency spectrum existing over all possible frequencies and a band-limited signal can only arise from signal existing for all time. Note this indicates in reality it is impossible to have a truly band-limited signal as it would take infinite time to transmit, but it is nonetheless a useful concept and we can produce nearly band-limited signal to a high degree of accuracy.
Is digital communication system is power limited or band limited?
A digital communication system can be both power limited and band limited, depending on the specific constraints of the system. Power-limited systems are constrained by the available transmission power, which affects the signal-to-noise ratio and overall performance. Band-limited systems, on the other hand, are restricted by the available bandwidth, which determines the maximum data rate and signal fidelity. In many practical scenarios, designers must balance both power and bandwidth limitations to optimize system performance.
What is narrow-band signal?
Narrow-Band (also referred to as short-wave) is a term used to describe the amplitude of a radio device. Narrow-band devices are limited to an average of 400m.
What is a drum signal?
a drum signal is when the drummer of a band ques the rest of the band to come .
What is the time limited signal?
A time limited signal is one that is nonzero only for a finite length time interval.
What is meant by base band digital signal?
It means the signal is not modulated.
What describes a signal with a frequency of 20GHz in a satellite radio transmissions?
A downlink signal; a Ka Band signal
What describes a signal with a frequency of 20 GHz in satellite radio transmissions?
A downlink signal A Ka Band signal
What type of signal does ISDN use?
Out-of-band
What is signal circuit?
What is a power limited circuit
What is a signal circuit?
What is a power limited circuit
