# Tag Info

## Hot answers tagged delay

Accepted

### Is a notch filter for 50 Hz without delay possible?

You could use a 2nd order IIR notch filter as I describe in this post Transfer function of second order notch filter - That post demonstrates a 50 Hz IIR notch with 1 KHz sampling. [Update: As @...
• 53.8k
Accepted

### Flat fading criterion of OFDM subcarrier spacing

Your mathematical derivation is correct, your $H[k]$ is the single-tap equalizer (i.e. one tap for each subcarrier, and the subcarriers do not mix with each other. That's the orthogonal in OFDM). ...
• 6,248
Accepted

### Delay a signal in time vs in frequency

Is there any trade-off in numerical precision or speed? Yes. For delays that are integer multiples of the sampling period method 1 is far superior: it's computationally efficient, it's bit-exact, it'...
• 47k
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### Digital delay effect: avoiding clicks on delay time change

If you are not changing the delay length very often, and you don't want to have a Doppler effect that comes from continuously changing the delay length, then try a cross-fade. Both delay lengths ...
• 13.6k

### Is a notch filter for 50 Hz without delay possible?

This is an uncertainty principle kind of problem: there is no way to make a reliable filter with little delay that will suppress a narrow band around 50Hz since the narrowness of a criterion in ...
Accepted

• 91.3k

### Interpreting the cross correlation results

Yes and no. In principle, you can use the peak of your correlation function. However, it is not at 10000. The correlation function is symmetric around 0, so your peak is actually much closer to zero ...
• 2,463

### Delay a signal in time vs in frequency

As Hilmar pointed out, for delays that are integer multiples of the sampling period, method 1 is far superior. Also, Method 1 is more suitable for real-time operations as you don't need to buffer the ...
• 3,787