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diff --git a/src/synth/wavetable.h b/src/synth/wavetable.h
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+/*
+  Copyright (C) 2003-2013 Paul Brossier <piem@aubio.org>
+
+  This file is part of aubio.
+
+  aubio is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  aubio is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with aubio.  If not, see <http://www.gnu.org/licenses/>.
+
+*/
+
+#ifndef AUBIO_WAVETABLE_H
+#define AUBIO_WAVETABLE_H
+
+/** \file
+
+  Wavetable synthesis.
+
+  This file creates a wavetable and plays it at different frequency.
+
+  The `_do` function adds the new samples to the input, and write the result as
+  the output.
+
+  \example synth/test-wavetable.c
+
+*/
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** wavetable object */
+typedef struct _aubio_wavetable_t aubio_wavetable_t;
+
+/** create new wavetable object
+
+  \param samplerate the sampling rate of the new wavetable
+  \param hop_size the block size of the new wavetable
+
+  \return the newly created aubio_wavetable_t
+
+*/
+aubio_wavetable_t * new_aubio_wavetable(uint_t samplerate, uint_t hop_size);
+
+/** load source in wavetable
+
+  \param o wavetable, created by new_aubio_wavetable()
+  \param uri the uri of the source to load
+
+  \return 0 if successful, non-zero otherwise
+
+*/
+uint_t aubio_wavetable_load( aubio_wavetable_t * o, const char_t * uri );
+
+/** process wavetable function
+
+  \param o wavetable, created by new_aubio_wavetable()
+  \param input input of the wavetable, to be added to the output
+  \param output output of the wavetable
+
+This function adds the new samples from the playing wavetable to the output.
+
+If `input` is not NULL and different from `output`, then the samples from `input`
+are added to the output.
+
+*/
+void aubio_wavetable_do ( aubio_wavetable_t * o, const fvec_t * input, fvec_t * output);
+
+/** process wavetable function, multiple channels
+
+  \param o wavetable, created by new_aubio_wavetable()
+  \param input input of the wavetable, to be added to the output
+  \param output output of the wavetable
+
+This function adds the new samples from the playing wavetable to the output.
+
+If `input` is not NULL and different from `output`, then the samples from `input`
+are added to the output.
+
+*/
+void aubio_wavetable_do_multi ( aubio_wavetable_t * o, const fmat_t * input, fmat_t * output);
+
+/** get current playing state
+
+  \param o wavetable, created by new_aubio_wavetable()
+
+  \return 0 if not playing, 1 if playing
+
+*/
+uint_t aubio_wavetable_get_playing ( const aubio_wavetable_t * o );
+
+/** set current playing state
+
+  \param o wavetable, created by new_aubio_wavetable()
+  \param playing 0 for not playing, 1 for playing
+
+  \return 0 if successful, 1 otherwise
+
+*/
+uint_t aubio_wavetable_set_playing ( aubio_wavetable_t * o, uint_t playing );
+
+/** play sample from start
+
+  \param o wavetable, created by new_aubio_wavetable()
+
+  \return 0 if successful, 1 otherwise
+
+*/
+uint_t aubio_wavetable_play ( aubio_wavetable_t * o );
+
+/** stop wavetable
+
+  \param o wavetable, created by new_aubio_wavetable()
+
+  \return 0 if successful, 1 otherwise
+
+*/
+uint_t aubio_wavetable_stop ( aubio_wavetable_t * o );
+
+/** set wavetable frequency
+
+  \param o wavetable, created by new_aubio_wavetable()
+  \param freq new frequency value for the wavetable
+
+  \return 0 if successful, 1 otherwise
+
+*/
+uint_t aubio_wavetable_set_freq ( aubio_wavetable_t * o, smpl_t freq );
+
+/** get wavetable frequency
+
+  \param o wavetable, created by new_aubio_wavetable()
+
+  \return current frequency, in Hz
+
+*/
+smpl_t aubio_wavetable_get_freq ( const aubio_wavetable_t * o);
+
+/** set wavetable amplitude
+
+  \param o wavetable, created by new_aubio_wavetable()
+  \param amp new amplitude value for the wavetable
+
+  \return 0 if successful, 1 otherwise
+
+*/
+uint_t aubio_wavetable_set_amp ( aubio_wavetable_t * o, smpl_t amp );
+
+/** get wavetable amplitude
+
+  \param o wavetable, created by new_aubio_wavetable()
+
+  \return current amplitude
+
+*/
+smpl_t aubio_wavetable_get_amp ( const aubio_wavetable_t * o);
+
+/** destroy aubio_wavetable_t object
+
+  \param o wavetable, created by new_aubio_wavetable()
+
+*/
+void del_aubio_wavetable( aubio_wavetable_t * o );
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* AUBIO_WAVETABLE_H */