Audacity Forum

Any ideas, how to repair track by removing waste components? There is also problem that generator works like fan and air flows etc. might cause problems. I can open spectrogram and take FFT-file out but is there any tool to remove components which are lower than -x dB, so I can hear and see better ...

How about two #2 wooden pencils? It shouldn't be too difficult to round up two of those and their impulse is not likely to overload the microphone. "We need to be careful not to get Mars and Venus mad at us or they'll stop sending us candy bars and pencils." - Glendora — Afternoon Kids TV...

Also: It would be nice if you could record a single impulse e.g. by clapping, hitting some hard material (like two stone bars) or something similar.
This can be used to either analyse, attenuate or boost the room reverberation.

Out of curiosity, how did you see that the current white noise has a uniform distribution?
However, it is true and there should be actually a preset for Gaussian noise too.

You have those (mono) tracks: i1 i2 m1 m2 Go to the drop down menu for i1 and choose "Make Stereo" do the same for m1. The resulting tracks are in stereo, one internal and one external. You could now proceed with export, this would automatically mix down the two tracks into one (stereo) tr...

I think the variable names should be clear. CF is the carrier frequency. CS means cosine and SN sine. REF-... means reference oscillator. The multiplication brings the modulated signal down to be centered around DC. ATAN2 calculates the phase difference between two consequent pairs (CS-1;SN-1 <-> CS...

You have to adjust the multiplication value (300) from Steve's code. Also, I don't thin that the sum term is necessary since the carrier hasn't to be transferred. As you say, experimenting is probably the best thing to do. You can of course combine the modulation and demodulation into one piece of c...

The reasoning goes something like this: - Bring the Audio to to about -20 dB RMS (Analyse --> Contrast) - if there are peaks over -3 dB, soft clip them with a Peak Limiter (Steve has written one). - if the narration fluctuates too much, use a compressor first or retake the "Show". I actual...

A simple example (for the Nyquist Prompt): The impulse response is 0.4 s long, that's fairly long already.

I find I have to use a value of 3500 rather than 1000 otherwise I get an error message saying there is not enough data. The "Size" setting in Plot Spectrum sets the number of samples used for each FFT window. There must be at least this number of samples available in the selection. After ...