diff options
Diffstat (limited to 'xtract/xtract_scalar.h')
| -rw-r--r-- | xtract/xtract_scalar.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/xtract/xtract_scalar.h b/xtract/xtract_scalar.h index 9bccb01..fdfb42a 100644 --- a/xtract/xtract_scalar.h +++ b/xtract/xtract_scalar.h @@ -394,6 +394,8 @@ int xtract_hps(const float *data, const int N, const void *argv, float *result); * \param *result: the pitch of N values from the array pointed to by *data * * This algorithm is based on the AMDF, with peak and centre clipping. It would benefit from further improvements to improve noise robustness and overall efficiency + * + * It is based on suggestion by Robert Bristow-Johnson in a discussion on the comp.dsp mailing list, subject "Reference implementation of pitch detection" * */ int xtract_f0(const float *data, const int N, const void *argv, float *result); |