commit: a39f03dd6ef1032bbc5ffa8cc7042d692bd260c1
parent 653614f87b500e73a45598cfcf30b0cc9a196c18
Author: Haelwenn (lanodan) Monnier <contact@hacktivis.me>
Date: Mon, 4 Mar 2024 12:23:00 +0100
notes/magnitudes: add comparison to 80mins CD
Diffstat:
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/notes/magnitudes.xhtml b/notes/magnitudes.xhtml
@@ -19,11 +19,19 @@
<h2 id="audio">Audio bandwith</h2>
<dl>
- <dt>PCM, CD Quality (16-bit @ 44.1 kHz), no compression</dt>
+ <dt>PCM, mono, CD Quality (16-bit @ 44.1 kHz), no compression</dt>
<dd><code>
16 bit × 44100 Hz = 705600 bps = <strong>705.6 kbps</strong>;<br />
705600 bps × 60 seconds = 42336000 bits-per-minute = <strong>42.336 Mb/minute</strong>
</code></dd>
+
+ <dt>PCM, stereo, CD Quality (16-bit @ 44.1 kHz), no compression, 80 minutes (CD typical max duration)</dt>
+ <dd><code>
+ 16 bit × 44100 Hz × 80 minutes × 2 ch<br />
+ = 705600 bits/second × 4800 seconds × 2ch<br />
+ = 6773760000 bits/80-minutes = 6.77376 Gb/80-minutes<br />
+ = 846720000 octets/80-minutes = <strong>846.72 MB/80-minutes</strong>
+ </code></dd>
</dl>
<h2 id="image">Image filesizes</h2>
