shithub: libsamplerate

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+++ b/doc/faq.html

@@ -46,7 +46,7 @@

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@@ -59,7 +59,7 @@

 <H1><B>Frequently Asked Questions</B></H1>

<P>

-<A HREF="#Q001">Q1 : Is it normal for the output of libsamplerate to be louder

+<A HREF="#Q001">Q1 : Is it normal for the output of libsamplerate to be louder

 	than its input?</A><BR><BR>

 <A HREF="#Q002">Q2 : On Unix/Linux/MacOSX, what is the best way of detecting

 	the presence and location of libsamplerate and its header file using

@@ -67,22 +67,24 @@

 <A HREF="#Q003">Q3 : If I upsample and downsample to the original rate, for

 	example 44.1->96->44.1, do I get an identical signal as the one before the

 	up/down resampling?</A><BR><BR>

+<A HREF="#Q004">Q4 : If I ran src_simple (libsamplerate) on small chunks (160

+	frames) would that sound bad?</A><BR><BR>

 </P>

 <HR>

 <!-- ========================================================================= -->

 <A NAME="Q001"></A>

-<H2><BR><B>Q1 : Is it normal for the output of libsamplerate to be louder

+<H2><BR><B>Q1 : Is it normal for the output of libsamplerate to be louder

 	than its input?</B></H2>

<P>

-The output of libsamplerate will be roughly the same volume as the input.

-However, even if the input is strictly in the range (-1.0, 1.0), it is still

+The output of libsamplerate will be roughly the same volume as the input.

+However, even if the input is strictly in the range (-1.0, 1.0), it is still

 possible for the output to contain peak values outside this range.

 </P>

<P>

-Consider four consecutive samples of [0.5 0.999 0.999 0.5].

-If we are up sampling by a factor of two we need to insert samples between

-each of the existing samples.

-Its pretty obvious then, that the sample between the two 0.999 values should

+Consider four consecutive samples of [0.5 0.999 0.999 0.5].

+If we are up sampling by a factor of two we need to insert samples between

+each of the existing samples.

+Its pretty obvious then, that the sample between the two 0.999 values should

 and will be bigger than 0.999.

 </P>

<P>

@@ -105,7 +107,7 @@

 </p>

 <pre>

-    PKG_CHECK_MODULES(SAMPLERATE, samplerate >= 0.0.15,

+    PKG_CHECK_MODULES(SAMPLERATE, samplerate >= 0.0.15,

             ac_cv_samplerate=1, ac_cv_samplerate=0)

     AC_DEFINE_UNQUOTED([HAVE_SAMPLERATE],${ac_cv_samplerate},

@@ -130,25 +132,25 @@

 </p>

 <pre>

     -=-=-=-=-=-=-=-=-=-= Configuration Complete =-=-=-=-=-=-=-=-=-=-=-

       Configuration summary :

         Version : ..................... 0.1.0

         Enable debugging : ............ no

       Tools :

         Compiler is GCC : ............. yes

         GCC major version : ........... 3

       Extra tools required for testing and examples :

         Have FFTW : ................... yes

         Have libsndfile : ............. yes

         Have libefence : .............. no

       Installation directories :

         Library directory : ........... /usr/local/lib

         Program directory : ........... /usr/local/bin

         Pkgconfig directory : ......... /usr/local/lib/pkgconfig

@@ -167,7 +169,7 @@

 </P>

<P>

 In order to resample correctly (ie using the <B>SRC_SINC_*</B> converters),

-filtering needs to be applied, regardless of whether its upsampling or

+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).

@@ -181,6 +183,19 @@

 which causes the output to be different to the input.

 </P>

+<!-- ========================================================================= -->

+<A NAME="Q004"></A>

+<H2><BR><B>Q4 : If I ran src_simple on small chunks (say 160 frames) would that

+sound bad?</B></H2>

+<P>

+Well if you are after odd sound effects, it might sound OK.

+If you are after high quality sample rate conversion you will be disappointed.

+</P>

+<P>

+The src_simple() was designed to provide a simple to use interface for people

+who wanted to do sample rate conversion on say, a whole file all at once.

+</P>

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@@ -192,9 +207,9 @@

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