diff options
Diffstat (limited to 'xtract')
| -rw-r--r-- | xtract/xtract_delta.h | 1 | ||||
| -rw-r--r-- | xtract/xtract_scalar.h | 2 |
2 files changed, 3 insertions, 0 deletions
diff --git a/xtract/xtract_delta.h b/xtract/xtract_delta.h index 6e19708..152a891 100644 --- a/xtract/xtract_delta.h +++ b/xtract/xtract_delta.h @@ -39,6 +39,7 @@ extern "C" { /** \brief Extract flux * + * \note FIX: don't be lazy -- take the lnorm of the difference vector! * An alias for xtract_lnorm() */ int xtract_flux(const float *data, const int N, const void *argv , float *result); 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); |