# Transpose maintaining spectral envelope from scipy.io.wavfile import write import scipy as sp import pysms audio_file = "voice.wav" # analyse audio, also calculate the Discrete Cepstrum Envelope frames, sms_header, snd_header = \ pysms.analyze(audio_file, env_type=pysms.SMS_ENV_FBINS, env_order=80) # Set modification parameters mod_params = pysms.SMS_ModifyParams() mod_params.maxFreq = 12000 # only calculate envelope up to 12 kHz mod_params.doSinEnv = True # apply envelope to sinusoidal component mod_params.doTranspose = True mod_params.transpose = 4 # 4 semi-tones up # apply modification to each frame for frame in frames: pysms.sms_modify(frame, mod_params) # Synthesis output = pysms.synthesize(frames, sms_header) # convert audio to int values output /= output.max() output = sp.asarray(output*32768, sp.int16) # write output files write("voice_transposed_env.wav", snd_header.iSamplingRate, output)
# Copyright (c) 2010 John Glover, National University of Ireland, Maynooth # # This program 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 2 of the License, or # (at your option) any later version. # # This program 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 this program; if not, write to the Free Software # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA from scipy.io.wavfile import write import numpy as np import pysms # Simple synthesis by analysis using libsms input_file = 'flute.wav' analysis_data, sms_header, snd_header = pysms.analyze(input_file) audio_out = pysms.synthesize(analysis_data, sms_header) write("synth.wav", sms_header.iSamplingRate, np.asarray(audio_out * 32768, dtype=np.int16))
# Transpose maintaining spectral envelope from scipy.io.wavfile import write import scipy as sp import pysms audio_file = "voice.wav" # analyse audio, also calculate the Discrete Cepstrum Envelope frames, sms_header, snd_header = \ pysms.analyze(audio_file, env_type=pysms.SMS_ENV_FBINS, env_order=80) # Set modification parameters mod_params = pysms.SMS_ModifyParams() mod_params.maxFreq = 12000 # only calculate envelope up to 12 kHz mod_params.doSinEnv = True # apply envelope to sinusoidal component mod_params.doTranspose = True mod_params.transpose = 4 # 4 semi-tones up # apply modification to each frame for frame in frames: pysms.sms_modify(frame, mod_params) # Synthesis output = pysms.synthesize(frames, sms_header) # convert audio to int values output /= output.max() output = sp.asarray(output * 32768, sp.int16) # write output files write("voice_transposed_env.wav", snd_header.iSamplingRate, output)
# Copyright (c) 2010 John Glover, National University of Ireland, Maynooth # # This program 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 2 of the License, or # (at your option) any later version. # # This program 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 this program; if not, write to the Free Software # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA from scipy.io.wavfile import write import numpy as np import pysms # Simple synthesis by analysis using libsms input_file = 'flute.wav' analysis_data, sms_header, snd_header = pysms.analyze(input_file) audio_out = pysms.synthesize(analysis_data, sms_header) write("synth.wav", sms_header.iSamplingRate, np.asarray(audio_out*32768, dtype=np.int16))
# The envelope_interp_factor only applies to the morph example # if the envelope_interp_factor is 0, the original target envelope will be used (no morph) # if it is 1, the original source envelope will be used # any value in between will result in a linear interpolation between the two envelopes envelope_interp_factor = 1 # In the transposition examples, transpose by this number of semitones transposition = 4 # ---------------------------------------------------------------------------------------- # Impose a spectral envelope from one sound onto another set of sinudoidal tracks # note: mod_params needs to be inititialized with sms_initModify to allocate the envelope array # (not necessary in transpose examples) # Analyze files source_frames, source_sms_header, source_snd_header = analyze( source, env_type=SMS_ENV_FBINS, env_order=80) target_frames, target_sms_header, target_snd_header = analyze( target, env_type=SMS_ENV_FBINS, env_order=80) source_num_tracks = source_sms_header.nTracks num_tracks = target_sms_header.nTracks num_frames = min(len(source_frames), len(target_frames)) if num_tracks != source_num_tracks: print "Error: sound sources have a different number of tracks" exit() # Set modification parameters mod_params = SMS_ModifyParams() sms_initModify(source_sms_header, mod_params) mod_params.doSinEnv = True
from scipy.io.wavfile import write import scipy as sp import pysms # Have to analyze source again for now, should really be a way to copy/clone frames audio_file = "voice.wav" frames, sms_header, snd_header = pysms.analyze(audio_file) # Set modification parameters mod_params = pysms.SMS_ModifyParams() mod_params.doTranspose = True mod_params.transpose = 4 # 4 semi-tones up # apply modification to each frame for frame in frames: pysms.sms_modify(frame, mod_params) # Synthesis output = pysms.synthesize(frames, sms_header) # convert audio to int values output /= output.max() output = sp.asarray(output*32768, sp.int16) # write output files write("voice_transposed.wav", snd_header.iSamplingRate, output)
from scipy.io.wavfile import write import scipy as sp import pysms # Have to analyze source again for now, should really be a way to copy/clone frames audio_file = "voice.wav" frames, sms_header, snd_header = pysms.analyze(audio_file) # Set modification parameters mod_params = pysms.SMS_ModifyParams() mod_params.doTranspose = True mod_params.transpose = 4 # 4 semi-tones up # apply modification to each frame for frame in frames: pysms.sms_modify(frame, mod_params) # Synthesis output = pysms.synthesize(frames, sms_header) # convert audio to int values output /= output.max() output = sp.asarray(output * 32768, sp.int16) # write output files write("voice_transposed.wav", snd_header.iSamplingRate, output)
# The envelope_interp_factor only applies to the morph example # if the envelope_interp_factor is 0, the original target envelope will be used (no morph) # if it is 1, the original source envelope will be used # any value in between will result in a linear interpolation between the two envelopes envelope_interp_factor = 1 # In the transposition examples, transpose by this number of semitones transposition = 4 # ---------------------------------------------------------------------------------------- # Impose a spectral envelope from one sound onto another set of sinudoidal tracks # note: mod_params needs to be inititialized with sms_initModify to allocate the envelope array # (not necessary in transpose examples) # Analyze files source_frames, source_sms_header, source_snd_header = analyze(source, env_type=SMS_ENV_FBINS, env_order=80) target_frames, target_sms_header, target_snd_header = analyze(target, env_type=SMS_ENV_FBINS, env_order=80) source_num_tracks = source_sms_header.nTracks num_tracks = target_sms_header.nTracks num_frames = min(len(source_frames), len(target_frames)) if num_tracks != source_num_tracks: print "Error: sound sources have a different number of tracks" exit() # Set modification parameters mod_params = SMS_ModifyParams() sms_initModify(source_sms_header, mod_params) mod_params.doSinEnv = True mod_params.sinEnvInterp = envelope_interp_factor