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small fixes

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This commit is contained in:
Felix Roos 2023-07-22 09:26:34 +02:00
parent cec7b90631
commit 92d574605e
1 changed files with 4 additions and 4 deletions
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8
website/src/pages/understand/pitch.mdx
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@ -24,7 +24,7 @@ The Hz number is the frequency of the pitch you're hearing.
The higher the frequency, the higher the pitch and vice versa.
A pitch occurs whenever something is vibrating / oscillating at a frequency, in this case it's your speaker.
The unit **Hz** describes how many times that oscillation happens per second.
Our eyes are too slow to actually see the oscillation on the speaker, but we can [see it in slow motion](https://www.youtube.com/watch?v=CDMBWw7OuJQ&t=5s).
Our eyes are too slow to actually see the oscillation on the speaker, but we can <a href="https://www.youtube.com/watch?v=CDMBWw7OuJQ" target="_blank">see it in slow motion</a>.
<Box>
@ -40,7 +40,7 @@ In Strudel, we can play frequencies directly with the `freq` control:
## Frequency vs Pitch Perception
Maybe you have already noticed that the <span style="color:#3b82f6;">frequency slider</span> is "lopsided",
meaning the pitch changes more in the left region and less in the right region.
meaning the pitch changes more in the left region and less in the right region.<br/>
To make that more obvious, let's add a <span style="color:#eab308">pitch slider</span>
that controls the frequency on a different scale:
@ -93,7 +93,7 @@ In Strudel, we could do that with `freq` like this:
tune={`freq(
"0 4 7 12"
.fmap(n => 440 * 2**(n/12))
).piano()`}
)`}
/>
Of course, this can be written shorter with note, as we will see below.
@ -119,7 +119,7 @@ Typically, 440Hz is standardized to the number 69, which leads to this calculati
The yellow number is now a MIDI number, covering more than the whole human hearing range with numbers from 0 to 127.
In Strudel, we can use MIDI numbers inside `note`:
<MiniRepl client:visible tune={`note("69 73 76 81").piano()`} />
<MiniRepl client:visible tune={`note("69 73 76 81")`} />
## From MIDI numbers to notes