Frequency Response/Content/stuff

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Discussion Overview

The discussion revolves around concepts related to frequency in the context of signals and systems, specifically focusing on frequency content, frequency response, and transfer functions. Participants explore definitions and relationships among these concepts.

Discussion Character

  • Exploratory
  • Technical explanation

Main Points Raised

  • One participant, Raman, expresses confusion about the definitions of frequency content, frequency response, and transfer function, seeking clarification on their meanings.
  • Another participant describes frequency as a function that shows how various circuit properties, such as admittance or impedance, vary with frequency, while also defining the transfer function as relating input to output in the frequency domain.
  • A later post reiterates the definition of frequency response, suggesting it indicates how a system treats a given frequency, mentioning that magnitude and phase shift are important aspects of this response.
  • Another participant echoes the previous conclusion about frequency response, affirming the understanding of its role in signal treatment.

Areas of Agreement / Disagreement

The discussion shows some agreement on the definitions of transfer function and frequency response, but uncertainty remains regarding the concept of frequency content. No consensus is reached on all definitions.

Contextual Notes

Participants have not fully resolved the definition of frequency content, and there are varying levels of understanding regarding the implications of frequency response and transfer functions.

swraman
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Hi,

Im a little confused about some concepts dealing with Frequency:

Frequency Content
Frequency Response
Transfer Function

From my understanding:
Frequency content is the content of different frequencies in a signal.
Frequency Response is...not sure
A transfer function tells you the output if a system to an input of a given frequency.
Is my understanding correct?

Thanks

Raman
 
Engineering news on Phys.org
Frequency
Is a function (in frequency domain) that shows how element properties (Admittance or Impedance for example), a current, a voltage or many other quantities in a circuit varies with frequency.

Transfer Function:
Is a function (in frequency domain) that relates between the input and the desired output in the circuit.

You will find more in:
William Hayt, Engineering Circuit Analysis

I'm not sure about Frequency content.
 
OK after a little more reading i came to this conclusion:

The frequency Response function tells you how a system treats a given frequency. Eg. the magnitude tells you how much an input signal with the given frequency is magnified by and the phase tells you how much its phase is shifted by.

Is this correct?
 
swraman said:
OK after a little more reading i came to this conclusion:

The frequency Response function tells you how a system treats a given frequency. Eg. the magnitude tells you how much an input signal with the given frequency is magnified by and the phase tells you how much its phase is shifted by.

Is this correct?

GREAT. You are doing well.
 

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