Audacity Forum

Quotes from waxcylinder in post 178468 on the first page of this thread: DC offset removal (if present) should ideally be the first thing done after capture and before all other editing DC-removal (if DC is present) must be the very first step after importing. This must be hammered into every user's...

I've removed the nonsensical "don't normalize" option. This is not nonsensical (is not nonsensical = sensical?), I need "DC-removal without normalizing" really often. What I meant was: Normalize with DC-removal - makes sense Normalize without DC-removal - makes sense? Do not normalize with DC-remov...

... "normalize without DC correction" must be: normalize the AC signal + add the DC offset, amplified by the same amount as the AC signal and this is indeeed the same as: MaxPeak = difference of the most-positive sample to 1.0 MinPeak = difference of the most-negative sample to -1.0 amplify the ent...

if normalize without DC correction -> normalize the AC signal and add the DC offset Unfortunately my code is wrong, because "normalize without DC correction" must be: normalize the AC signal + add the DC offset, amplified by the same amount as the AC signal and this is indeeed the same as: MaxPeak ...

Hi David, I think (hope) I have finally understood what the problem is. The exact SPL value is not really important here, it's the exact frequency range that matters. This can be tested with standard computer equipment, but the loudspeakers should not be too cheap. I live in Germany and therefore I'...

... there is no perfect solution (that I can think of). There is no perfect solution for nothing in life, and I'm not perfect, too. My questions were not about nit-picking. I am an electrician for audio and video recording equipment and have already worked for several medical institutions in German...

In Nyquist, using the "integrate" function there appears to be little if any speed penalty in calculating the DC offset. The bad news is that the Nyquist speed improvement is caused by the fact that Nyquist loads all samples from Audacity section into memory, and analyzing a sound in memory is of c...

Generate an adjustable sinusoidal tone (from 200 Hz to 20 kHz) A standard computer soundcard with 44.1kHz sample frequency cannot produce a 20kHz sine wave in a reliable way, only a 20kHz square wave. Producing a 20kHz sine wave requires audio hardware with a sample frequency of minimum 400kHz. Adj...

Now (six o'clock in the morning) a new version, rewritten according to the "AC and DC components" theory. This is probably still not the final version because I have e.g. still not found a good abstraction how the code could be MULTICHAN-EXPANDed to an arbitrary number of channels. ...removing a DC ...

If we have 0 arguments per hour, how many arguments do we have in a day? How long will it be, from now, until we have an argument? An infinite amount of time, as I already said above. With 1Hz 1/f=1s, with 0.1Hz, 1/f=10s, with 0.01Hz 1/f=100s. The smaller the Hz number, the longer the time. This wi...