fix some a/an typos

Signed-off-by: Lou Logan <lou@lrcd.com>

4 files changed, 4 insertions, 4 deletions

diff --git a/doc/Doxyfile b/doc/Doxyfile
index 1ad9f3041f..0c1604e007 100644
--- a/doc/Doxyfile
+++ b/doc/Doxyfile
@@ -1429,7 +1429,7 @@ PERL_PATH              = /usr/bin/perl
 #---------------------------------------------------------------------------
 
 # If the CLASS_DIAGRAMS tag is set to YES (the default) Doxygen will
-# generate a inheritance diagram (in HTML, RTF and LaTeX) for classes with base
+# generate an inheritance diagram (in HTML, RTF and LaTeX) for classes with base
 # or super classes. Setting the tag to NO turns the diagrams off. Note that
 # this option is superseded by the HAVE_DOT option below. This is only a
 # fallback. It is recommended to install and use dot, since it yields more
diff --git a/doc/codecs.texi b/doc/codecs.texi
index b481b4a053..ad99fa6906 100644
--- a/doc/codecs.texi
+++ b/doc/codecs.texi
@@ -257,7 +257,7 @@ Specify how strictly to follow the standards.
 Possible values:
 @table @samp
 @item very
-strictly conform to a older more strict version of the spec or reference software
+strictly conform to an older more strict version of the spec or reference software
 @item strict
 strictly conform to all the things in the spec no matter what consequences
 @item normal
diff --git a/doc/examples/filtering_audio.c b/doc/examples/filtering_audio.c
index 89c80cfd55..6bb24a431d 100644
--- a/doc/examples/filtering_audio.c
+++ b/doc/examples/filtering_audio.c
@@ -65,7 +65,7 @@ static int open_input_file(const char *filename)
     /* select the audio stream */
     ret = av_find_best_stream(fmt_ctx, AVMEDIA_TYPE_AUDIO, -1, -1, &dec, 0);
     if (ret < 0) {
-        av_log(NULL, AV_LOG_ERROR, "Cannot find a audio stream in the input file\n");
+        av_log(NULL, AV_LOG_ERROR, "Cannot find an audio stream in the input file\n");
         return ret;
     }
     audio_stream_index = ret;
diff --git a/doc/snow.txt b/doc/snow.txt
index 9d5778d55d..bbf28bc6c2 100644
--- a/doc/snow.txt
+++ b/doc/snow.txt
@@ -527,7 +527,7 @@ Wavelet Transform:
 ==================
 
 Snow supports 2 wavelet transforms, the symmetric biorthogonal 5/3 integer
-transform and a integer approximation of the symmetric biorthogonal 9/7
+transform and an integer approximation of the symmetric biorthogonal 9/7
 daubechies wavelet.
 
 2D IDWT (inverse discrete wavelet transform)