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Step 8Sequence of frequencies
Let us take a closer look at how that image was formed.
The first picture below shows the sequence of frequencies emitted by the micro, with a short time resolution.
It clearly shows the stairstep nature of the tones, as the tones making up the dots are emitted in serial sequence. You can also see why the characters formed all slope to the right.
The second shows the same display, with a different filter setting. The time resolution of this filter is reduced, so that the dots seem to occupy more time. The resulting horizontal smear has the result of making the text easier to read.
A signal has to have a corresponding setting of the program before it gets displayed as a recognisable image.
The first picture below shows the sequence of frequencies emitted by the micro, with a short time resolution.
It clearly shows the stairstep nature of the tones, as the tones making up the dots are emitted in serial sequence. You can also see why the characters formed all slope to the right.
The second shows the same display, with a different filter setting. The time resolution of this filter is reduced, so that the dots seem to occupy more time. The resulting horizontal smear has the result of making the text easier to read.
A signal has to have a corresponding setting of the program before it gets displayed as a recognisable image.
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