3 ms·
I don't understand how that would work. The video gives a great explanation of analysis, which is that you are given an arbitrary waveform, and need to decompos
by appleflaxen 12y ago
I don't understand how that would work. The video gives a great explanation of analysis, which is that you are given an arbitrary waveform, and need to decompose it into it's component sines or cosines. Even with your description, I can't see how a violin would accomplish that.
- graycat 12y agoThe sound from one string on a violin is essentially periodic. So, can apply Fourier series. When do that, get the amplitudes of the overtones. The periodic sound from a violin string is not a sine or cosine wave, but, as in Fourier theory, each of the overtones is. And it is just those overtones a violinist uses to tune the instrument. That is, use a tuning fork to tune the A string to, say, 440 Hz. Then bow the A string and the E string together, listen to the third overtone from the A string and the second overtone from the E string and adjust the E string until the beats (for each x Hz difference in frequency, x beats a second) disappear. The overtones being used are the sine-cosine components in the Fourier series decomposition of the periodic sounds.