ref: c841b0aaf00d70c8d4b7c5400f15d0152cf53c7d
parent: 652200fde709d392eb3e1186cf0161ebc88625a9
author: Erik de Castro Lopo <erikd@miles>
date: Thu Jun 3 05:10:43 EDT 2004
Minor cleanup of FAQ.
--- a/doc/faq.html
+++ b/doc/faq.html
@@ -166,14 +166,15 @@
get very, very close.
</P>
<P>
-In order to resample correctly (ie using the <B>SRC_SINC_*</B> converters,
+In order to resample correctly (ie using the <B>SRC_SINC_*</B> converters),
filtering needs to be applied, regardless of whether its upsampling or
downsampling.
This filter needs to attenuate all frequencis above 0.5 times the minimum of
the source and desination sample rate (call this fshmin).
-Since the filter is has to achieve full attemuation at this point, it has to
-start rolling off a some point before this point. Its this rolloff of the very
-highest frequencies which causes some of the loss.
+Since the filter needed to achieve full attemuation at this point, it has to
+start rolling off a some frequency below this point.
+It is this rolloff of the very highest frequencies which causes some of the
+loss.
</P>
<P>
The other factor is that the filter itself can introduce transient artifacts