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No, Pre-emphasis is done before modulation. We need it to do for improving the SNR ratio of the signals of higher frequencies. Actually this boosting of weaker higher frequencies of data signals. (Asked question is a sort of trap question usually asked in viva or interview.... ;) )
What else can I help you with?
In what stage modulation is done on high power amplitude modulation transmission?
In high power AM transmission, modulation is done at
What is pre-emphasis and de-emphasis in FM?
In FM, the effect of noise is more on higher frequencies when compared with low frequencies. Therefore in order to have high signal-to-noise ratio(low noise), the high frequencies are amplified at the transmitter side and for compensation deemphasis(decreasing the amplitude of those boosted frequencies ) is done at receiver.
When modulation frequency is doubled modulation index also doubled in case of FM or pm or am?
In Frequency Modulation (FM), if the modulation frequency is doubled, the modulation index does not necessarily double; it depends on the amplitude of the modulating signal. In Amplitude Modulation (AM), the modulation index is defined as the ratio of the peak amplitude of the modulating signal to the carrier amplitude, so it remains unchanged with varying modulation frequency. For Phase Modulation (PM), similar to FM, the modulation index is influenced by the amplitude of the modulating signal and does not inherently double with the modulation frequency. Thus, modulation frequency and modulation index are not directly linked in this way for FM, PM, or AM.
When modulation frequency is doubled the modulation index is halved and the modulating voltage remains constant the modulation system is?
the modulation system is of FM
How does quadrature amplitude modulation works?
QAM is a combination of phase modulation & amplitude modulation.
In what stage modulation is done on high power amplitude modulation transmission?
In high power AM transmission, modulation is done at
What is Pre-emphasis and de-emphasis theory in analog communication?
Pre-emphasis and de-emphasis are techniques used in analog communication to improve the signal-to-noise ratio, particularly in frequency modulation (FM) systems. Pre-emphasis involves boosting the amplitude of higher-frequency components of the signal before transmission, helping to counteract the effects of noise that disproportionately affect these frequencies. Conversely, de-emphasis reduces the amplitude of these higher frequencies at the receiver, restoring the original signal's frequency balance while minimizing noise. This process enhances clarity and quality in audio transmission, especially in applications like FM radio broadcasting.
What is the main advantage of pre-emphasis?
a emphasis is a word
What are the electronic communication?
its nothing but modulation and demodulation. modulation of the message is done in transmitter side and demodulation is done at receiver side and retrieving the original message.
Need of pre-emphasis and de-emphasis circuits?
dynaco fm
What are the electronic communication process?
its nothing but modulation and demodulation. modulation of the message is done in transmitter side and demodulation is done at receiver side and retrieving the original message.
What are the technique in reducing of noise in FM?
To reduce noise in Frequency Modulation (FM) signals, techniques such as pre-emphasis and de-emphasis can be employed. Pre-emphasis boosts higher frequencies before transmission, while de-emphasis reduces them at the receiver, improving the signal-to-noise ratio. Additionally, the use of limiters can help eliminate amplitude variations caused by noise, ensuring that only the frequency variations are decoded. Finally, implementing digital signal processing techniques, such as filtering and error correction algorithms, can further enhance noise reduction in FM systems.
Application of pre emphasis and de emphasis?
fm,audio digtal recording
In what stage modulation is done in high power AM transmissions?
RF Power stage
What is detection of AM?
AM is amplitude modulation. AM detection is the process of demodulation or recovering the information encoded in the signal through amplitude modulation. AM detection can be done through a simple diode detector which rectifies the AM signal.
What are the synonyms for accent?
pronunciation, tone, articulation, inflection, brogue, intonation, diction, modulation
What is pre-emphasis and de-emphasis in FM?
In FM, the effect of noise is more on higher frequencies when compared with low frequencies. Therefore in order to have high signal-to-noise ratio(low noise), the high frequencies are amplified at the transmitter side and for compensation deemphasis(decreasing the amplitude of those boosted frequencies ) is done at receiver.
