# Questions tagged [frequency-response]

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### What is the difference between frequency response and transfer function?

I would like to understand the difference between frequency response and transfer function. I know the former can be obtained by substituting $s = j\omega$. But what is the difference in ...
7k views

### Formula for Logarithmic (audio taper) pot

What I would like I am trying to determine the formula for an audio taper (logarithmic) pot. I would like a formula that takes R and P as inputs. R being the total resistance and P being the "...
1k views

### What does a bode plot represent and what is a pole and zero of bode plot?

I studied bode plot and the author of book is somehow relating zeros of transfer function to bode plot. What is the relation between zeros or poles of bode plot and transfer function? We usually take ...
5k views

### Why aren't active headphones equalized to a flat frequency response?

Some headphones are 'active', with amplifiers built into the cups and requiring a power source (typically AAA batteries). I then see many audiophiles discussing frequency response as a metric of how ...
3k views

### Laplace transform and the idea of frequency domain analysis

I have studied control theory in depth in my undergrad and still continue to use it on many occasions in my PhD work, but i still don't fully understand why we call Laplace transformation of system a "...
1k views

### Does a voice coil vibrate at the same frequency as the source sound file?

As a disclaimer I know very little about this so I'm probably describing this in a very imprecise way. Say you generated a sine wave on your computer at 800Hz and played it through a speaker. Would ...
4k views

### LC low pass filter: intuitive understanding

The figure below is an LC low pass filter and its bode plot. As we can see the ratio Vout/Vin is larger than 1 around the resonant frequency. Is there an intuitive explanation why the ratio is ...
408 views

### Interpreting the open loop gain of a linear power supply

This question is related to a question asked earlier regarding a linear power supply build. It turns out that the circuit is oscillating quite badly; an issue not uncommon in feedback circuits. I've ...