[doc] update Auditory Toolbox url

diff --git a/doc/aubiomfcc.txt b/doc/aubiomfcc.txt
index 245e352..7ef93f7 100644 (file)
--- a/doc/aubiomfcc.txt
+++ b/doc/aubiomfcc.txt
@@ -51,7 +51,7 @@ REFERENCES
   according to Malcolm Slaney's Auditory Toolbox, available at the following
   url:
 
-  http://cobweb.ecn.purdue.edu/~malcolm/interval/1998-010/ (see file mfcc.m)
+  https://engineering.purdue.edu/~malcolm/interval/1998-010/ (see file mfcc.m)
 
 SEE ALSO
 

diff --git a/src/spectral/filterbank_mel.h b/src/spectral/filterbank_mel.h
index 77f0be0..ffa4948 100644 (file)
--- a/src/spectral/filterbank_mel.h
+++ b/src/spectral/filterbank_mel.h
@@ -58,8 +58,9 @@ uint_t aubio_filterbank_set_triangle_bands (aubio_filterbank_t * fb,
   \param samplerate audio sampling rate
 
   The filter coefficients are built according to Malcolm Slaney's Auditory
-  Toolbox, available at http://engineering.purdue.edu/~malcolm/interval/1998-010/
-  (see file mfcc.m).
+  Toolbox, available online at the following address (see file mfcc.m):
+
+  https://engineering.purdue.edu/~malcolm/interval/1998-010/
 
 */
 uint_t aubio_filterbank_set_mel_coeffs_slaney (aubio_filterbank_t * fb,

diff --git a/src/spectral/mfcc.h b/src/spectral/mfcc.h
index a170e12..ba2c7f2 100644 (file)
--- a/src/spectral/mfcc.h
+++ b/src/spectral/mfcc.h
@@ -26,9 +26,10 @@
   This object computes MFCC coefficients on an input cvec_t.
 
   The implementation follows the specifications established by Malcolm Slaney
-  in its Auditory Toolbox, available online (see file mfcc.m).
+  in its Auditory Toolbox, available online at the following address (see
+  file mfcc.m):
 
-  http://engineering.ecn.purdue.edu/~malcolm/interval/1998-010/
+  https://engineering.purdue.edu/~malcolm/interval/1998-010/
 
   \example spectral/test-mfcc.c