Hi,
Depends what part you want to measure... the recovered signal, the average carrier or peak envelope power of the whole thing? 😕
Cheers!
Depends what part you want to measure... the recovered signal, the average carrier or peak envelope power of the whole thing? 😕
Cheers!
I want to measure the frequency response of a sweep on CD to make corrections on the analog filter for a nonos DAC.
@ 20kHz it is already modulated like in the picture, and I am not sure how the amplitude should be to have a linear response.
The question might be, what does the ear detect, the maximum peak value or something else ?
@ 20kHz it is already modulated like in the picture, and I am not sure how the amplitude should be to have a linear response.
The question might be, what does the ear detect, the maximum peak value or something else ?
Ah, now we have this in context, you are witnessing "aliasing" - a beatnote when the sample frequency is (hideously complex math) with the recorded frequency.
When I encounter this, I usually try a different playback device 🙂
The ear detects average and when two signals are concerned, the linear sum.
Anybody that can be more helpful, jump in...
Cheers!
When I encounter this, I usually try a different playback device 🙂
The ear detects average and when two signals are concerned, the linear sum.
Anybody that can be more helpful, jump in...
Cheers!
Geek said:
The amplitude of the signal as shown in the picture shall be compared to a clean 1 kHz sine.
So the question is:
Is the response linear if the cursor keeps touching the curve during the sweep ?
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