def set_channel(self, channel):
"""
Set a new Channel.
"""
if channel is not None:
self.chansil = ChannelSilence( channel, self.win_lenght )
else:
self.chansil = None
def search_channel_speech(channel, winlenght=0.010, minsildur=0.200, mintrackdur=0.300, shiftdurstart=0.010, shiftdurend=0.010 ):
"""
Return a list of tracks (i.e. speech intervals where energy is high enough).
Use only default parameters.
@param channel (Channel - IN) The channel we'll try to find tracks
@return A list of tuples (fromtime,totime)
"""
chansil = ChannelSilence( channel, winlenght )
chansil.search_silences( threshold=0, mintrackdur=0.08 )
chansil.filter_silences( minsildur )
tracks = chansil.extract_tracks( mintrackdur, shiftdurstart, shiftdurend )
tracks.append( (channel.get_nframes(),channel.get_nframes()) )
trackstimes = frames2times(tracks, channel.get_framerate())
return trackstimes
def SetChannel(self, newchannel):
"""
Set a new channel, estimates the values to be displayed.
"""
# Set the channel
self._channel = newchannel
wx.BeginBusyCursor()
b = wx.BusyInfo("Please wait while loading and analyzing data...")
# To estimate values related to amplitude
frames = self._channel.get_frames(self._channel.get_nframes())
self._ca = AudioFrames(frames, self._channel.get_sampwidth(), 1)
# Estimates the RMS (=volume), then find where are silences, then IPUs
self._cv = ChannelSilence(self._channel)
self._cv.search_silences() # threshold=0, mintrackdur=0.08
self._cv.filter_silences() # minsildur=0.2
self._tracks = self._cv.extract_tracks() # mintrackdur=0.3
b.Destroy()
b = None
wx.EndBusyCursor()
class IPUsAudio( object ):
"""
@author: Brigitte Bigi
@organization: Laboratoire Parole et Langage, Aix-en-Provence, France
@contact: [email protected]
@license: GPL, v3
@copyright: Copyright (C) 2011-2016 Brigitte Bigi
@summary: An IPUs segmenter from audio.
IPUs - Inter-Pausal Units are blocks of speech bounded by silent pauses
of more than X ms, and time-aligned on the speech signal.
"""
MIN_SIL_DUR = 0.08
MIN_IPU_DUR = 0.08
def __init__(self, channel):
"""
Creates a new IPUsAudio instance.
"""
super(IPUsAudio, self).__init__()
self.reset()
self.set_channel(channel)
# ------------------------------------------------------------------
def reset(self):
"""
Set default values.
"""
self.min_sil_dur = 0.250
self.min_ipu_dur = 0.300
self.vol_threshold = 0
self.shift_start = 0.010
self.shift_end = 0.020
self.win_lenght = 0.020
self.auto_vol = True
self.bornestart = False
self.borneend = False
# ------------------------------------------------------------------
# Manage Channel
# ------------------------------------------------------------------
def get_channel(self):
"""
Return the channel.
"""
return self.chansil.get_channel()
# ------------------------------------------------------------------
def set_channel(self, channel):
"""
Set a new Channel.
"""
if channel is not None:
self.chansil = ChannelSilence( channel, self.win_lenght )
else:
self.chansil = None
# ------------------------------------------------------------------
def reset_silences(self):
"""
Reset the list of silences.
"""
if self.chansil is not None:
self.chansil.reset_silences()
# ------------------------------------------------------------------
def set_silences(self, silences):
"""
Fix the list of silences.
"""
if self.chansil is not None:
self.chansil.set_silences( silences )
# ------------------------------------------------------------------
# Setters for members
# ------------------------------------------------------------------
def set_vol_threshold(self, vol_threshold):
"""
Fix the default minimum volume value to find silences.
@param vol_threshold (int) RMS value
"""
self.vol_threshold = int(vol_threshold)
if vol_threshold == 0:
self.auto_vol = True
else:
self.auto_vol = False
# ------------------------------------------------------------------
def set_min_silence(self, min_sil_dur):
"""
Fix the default minimum duration of a silence.
@param min_sil_dur (float) Duration in seconds.
"""
self.min_sil_dur = float(min_sil_dur)
# ------------------------------------------------------------------
def set_min_speech(self, min_ipu_dur):
"""
Fix the default minimum duration of an IPU.
@param min_ipu_dur (float) Duration in seconds.
"""
self.min_ipu_dur = float(min_ipu_dur)
# ------------------------------------------------------------------
def set_vol_win_lenght(self, winlength):
"""
Fix the default windows length for RMS estimations.
@param winlength (float) Duration in seconds.
"""
self.win_lenght = max(winlength, 0.005)
# ------------------------------------------------------------------
def set_shift(self, s):
"""
Fix the default minimum boundary shift value.
@param s (float) Duration in seconds.
"""
self.shift_start = float(s)
self.shift_end = float(s)
# ------------------------------------------------------------------
def set_shift_start(self, s):
"""
Fix the default minimum boundary shift value.
@param s (float) Duration in seconds.
"""
self.shift_start = float(s)
# ------------------------------------------------------------------
def set_shift_end(self,s):
"""
Fix the default minimum boundary shift value.
@param s (float) Duration in seconds.
"""
self.shift_end = float(s)
# ------------------------------------------------------------------
def min_channel_duration(self):
"""
Return the minimum duration we expect for a channel.
"""
d1 = self.min_sil_dur+self.shift_start+self.shift_end
d2 = self.min_ipu_dur+self.shift_start+self.shift_end
return max(d1,d2)
# ------------------------------------------------------------------
def set_bound_start(self, sil=False):
"""
Fix if it is expected (or not) to find a silence at the beginning of the channel.
"""
self.bornestart = sil
# ------------------------------------------------------------------
def set_bound_end(self, sil=False):
"""
Fix if it is expected (or not) to find a silence at the end of the channel.
"""
self.borneend = sil
# ------------------------------------------------------------------
# Silence/Speech segmentation
# ------------------------------------------------------------------
def extract_tracks(self, min_ipu_dur=None, shift_start=None, shift_end=None):
"""
Return a list of tuples (from_pos,to_pos) of tracks.
The tracks are found from the current list of silences.
@param min_ipu_dur (float) The minimum duration for a track (in seconds)
@param shiftdurstart (float) The time to remove to the start boundary (in seconds)
@param shiftdurend (float) The time to add to the end boundary (in seconds)
@return (list of tuples)
"""
if self.chansil is None:
return []
if min_ipu_dur is None:
min_ipu_dur=self.min_ipu_dur
if shift_start is None:
shift_start=self.shift_start
if shift_end is None:
shift_end=self.shift_end
return self.chansil.extract_tracks(min_ipu_dur, shift_start, shift_end)
# ------------------------------------------------------------------
def search_tracks(self, volume):
"""
Return the tracks if volume is used as threshold.
"""
if self.chansil is None:
return []
self.chansil.search_silences(volume, mintrackdur=IPUsAudio.MIN_IPU_DUR)
self.chansil.filter_silences(self.min_sil_dur)
return self.extract_tracks()
# ------------------------------------------------------------------
def check_boundaries(self, tracks):
"""
Check if silences at start and end are as expected.
@return bool
"""
if len(tracks) == 0:
return False
if self.chansil is None:
return False
if self.bornestart is False and self.borneend is False:
# we do not know anything about silences at start and end
# then, everything is ALWAYS OK!
return True
first_from_pos = tracks[0][0]
last_to_pos = tracks[len(tracks)-1][1]
# If I expected a silence at start... and I found a track
if self.bornestart is True and first_from_pos==0:
return False
# If I expected a silence at end... and I found a track
if self.borneend is True and last_to_pos==self.chansil.get_channel().get_nframes():
return False
return True
# ------------------------------------------------------------------
def split_into_vol(self, nbtracks):
"""
Try various volume values to estimate silences then get the expected number of tracks.
@param nbtracks is the expected number of IPUs
@return number of tracks
"""
if self.chansil is None:
return 0
volstats = self.chansil.get_volstats()
# Min volume in the speech
vmin = volstats.min()
# Max is set to the mean
vmax = volstats.mean()
# Step is necessary to not exaggerate a detailed search!
# step is set to 5% of the volume between min and mean.
step = int( (vmax - vmin) / 20.0 )
# Min and max are adjusted
vmin += step
vmax -= step
# First Test !!!
self.vol_threshold = vmin
tracks = self.search_tracks(vmin)
n = len(tracks)
b = self.check_boundaries(tracks)
while (n != nbtracks or b is False):
# We would never be done anyway.
if (vmax==vmin) or (vmax-vmin) < step:
return n
# Try with the middle volume value
vmid = int(vmin + (vmax - vmin) / 2.0)
if n > nbtracks:
# We split too often. Need to consider less as silence.
vmax = vmid
elif n < nbtracks:
# We split too seldom. Need to consider more as silence.
vmin = vmid
else:
# We did not find start/end silence.
vmin += step
# Find silences with these parameters
self.vol_threshold = int(vmid)
tracks = self.search_tracks(vmid)
n = len(tracks)
b = self.check_boundaries(tracks)
return n
# ------------------------------------------------------------------
def split_into(self, nbtracks):
"""
Try various volume values, pause durations and silence duration to get silences.
@param nbtracks is the expected number of IPUs. 0=auto.
"""
if self.chansil is None:
raise Exception('No audio data.')
if self.auto_vol is True:
self.vol_threshold = self.chansil.search_threshold_vol()
if nbtracks == 0:
self.search_tracks( self.vol_threshold )
return 0
# Try with default parameters:
tracks = self.search_tracks( self.vol_threshold )
n = len(tracks)
b = self.check_boundaries(tracks)
if n == nbtracks and b is True:
return n
# Try with default lengths (change only volume):
n = self.split_into_vol( nbtracks )
if n > nbtracks:
# We split too often. Try with larger' values.
while n > nbtracks:
self.min_sil_dur += self.win_lenght
self.min_ipu_dur += self.win_lenght
n = self.split_into_vol( nbtracks )
elif n < nbtracks:
# We split too seldom. Try with shorter' values of silences
p = self.min_sil_dur
m = self.min_ipu_dur
while n < nbtracks and self.min_sil_dur > IPUsAudio.MIN_SIL_DUR:
self.min_sil_dur -= self.win_lenght
n = self.split_into_vol( nbtracks )
# we failed... try with shorter' values of ipus
if n < nbtracks:
self.min_sil_dur = p
while n < nbtracks and self.min_ipu_dur > IPUsAudio.MIN_IPU_DUR:
self.min_ipu_dur -= self.win_lenght
n = self.split_into_vol( nbtracks )
# we failed... try with shorter' values of both sil/ipus
if n < nbtracks:
self.min_ipu_dur = m
while n < nbtracks and self.min_sil_dur > IPUsAudio.MIN_SIL_DUR and self.min_ipu_dur > IPUsAudio.MIN_IPU_DUR:
self.min_ipu_dur -= self.win_lenght
self.min_sil_dur -= self.win_lenght
n = self.split_into_vol( nbtracks )
return n
class AudioRoamerPanel( wx.Panel ):
"""
@author: Brigitte Bigi
@organization: Laboratoire Parole et Langage, Aix-en-Provence, France
@contact: [email protected]
@license: GPL, v3
@copyright: Copyright (C) 2011-2016 Brigitte Bigi
@summary: Display info about a channel. Allows to save.
This panel display all information about a channel:
- amplitudes: nb of frames, min/max values, zero crossing,
- clipping rates
- volumes: min/max/mean
- silence/speech automatic segmentation.
Methods allow to save:
- the channel or a fragment of the channel, in an audio file;
- the information in a text file.
"""
FRAMERATES = [ "16000", "32000", "48000" ]
SAMPWIDTH = [ "8", "16", "32" ]
INFO_LABELS = {"framerate":(" Frame rate (Hz): ",FRAMERATES[0]),
"sampwidth":(" Samp. width (bits): ",SAMPWIDTH[0]),
"mul": (" Multiply values by: ","1.0"),
"bias": (" Add bias value: ","0"),
"offset": (" Remove offset value: ",False),
"nframes": (" Number of frames: "," ... "),
"minmax": (" Min/Max values: "," ... "),
"cross": (" Zero crossings: "," ... "),
"volmin": (" Volume min: "," ... "),
"volmax": (" Volume max: "," ... "),
"volavg": (" Volume mean: "," ... "),
"volsil": (" Threshold volume: "," ... "),
"nbipus": (" Number of IPUs: "," ... "),
"duripus": (" Nb frames of IPUs: "," ... ")
}
def __init__(self, parent, preferences, channel):
"""
Create a new AudioRoamerPanel instance.
@param parent (wxWindow)
@param preferences (structs.Preferences)
@param channel (audiodata.Channel)
"""
wx.Panel.__init__(self, parent)
self._channel = channel # Channel
self._filename = None # Fixed when "Save as" is clicked
self._cv = None # ChannelSilence, fixed by ShowInfos
self._tracks = None # the IPUs we found automatically
self._ca = None # AudioFrames with only this channel, fixed by ShowInfos
self._wxobj = {} # Dict of wx objects
sizer = self._create_content()
self.MODIFIABLES = {}
for key in ["framerate","sampwidth","mul","bias","offset"]:
self.MODIFIABLES[key] = AudioRoamerPanel.INFO_LABELS[key][1]
self.SetPreferences(preferences)
self.SetSizer(sizer)
self.SetAutoLayout( True )
self.SetMinSize((MIN_PANEL_W,MIN_PANEL_H))
self.Layout()
# -----------------------------------------------------------------------
# Private methods to show information about the channel into the GUI.
# -----------------------------------------------------------------------
def _create_content(self):
"""
Create the main sizer, add content then return it.
"""
sizer = wx.BoxSizer(wx.HORIZONTAL)
info = self._create_content_infos()
clip = self._create_content_clipping()
ipus = self._create_content_ipus()
sizer.AddSpacer(5)
sizer.Add(info, 1, wx.EXPAND, 0)
sizer.AddSpacer(10)
sizer.Add(clip, 0, wx.ALL, 0)
sizer.AddSpacer(10)
sizer.Add(ipus, 1, wx.EXPAND, 0)
sizer.AddSpacer(5)
return sizer
def _create_content_infos(self):
"""
GUI design for amplitude and volume information.
"""
gbs = wx.GridBagSizer(10, 2)
static_tx = wx.StaticText(self, -1, "Amplitude values: ")
gbs.Add(static_tx, (0,0), (1,2), flag=wx.LEFT, border=2)
self._wxobj["titleamplitude"] = (static_tx,None)
self.__add_info(self, gbs, "nframes", 1)
self.__add_info(self, gbs, "minmax", 2)
self.__add_info(self, gbs, "cross", 3)
static_tx = wx.StaticText(self, -1, "")
gbs.Add(static_tx, (4,0), (1,2), flag=wx.LEFT, border=2)
cfm = wx.ComboBox(self, -1, choices=AudioRoamerPanel.FRAMERATES, style=wx.CB_READONLY)
cfm.SetMinSize((120,24))
self.__add_modifiable(self, gbs, cfm, "framerate", 5)
self.Bind(wx.EVT_COMBOBOX, self.OnModif, cfm)
csp = wx.ComboBox(self, -1, choices=AudioRoamerPanel.SAMPWIDTH, style=wx.CB_READONLY)
csp.SetMinSize((120,24))
self.__add_modifiable(self, gbs, csp, "sampwidth", 6)
self.Bind(wx.EVT_COMBOBOX, self.OnModif, csp)
txm = wx.TextCtrl(self, -1, AudioRoamerPanel.INFO_LABELS["mul"][1], validator=TextAsNumericValidator())
txm.SetInsertionPoint(0)
self.__add_modifiable(self, gbs, txm, "mul", 7)
self.Bind(wx.EVT_TEXT_ENTER , self.OnModif, txm)
txb = wx.TextCtrl(self, -1, AudioRoamerPanel.INFO_LABELS["bias"][1], validator=TextAsNumericValidator())
txb.SetInsertionPoint(0)
self.__add_modifiable(self, gbs, txb, "bias", 8)
self.Bind(wx.EVT_TEXT_ENTER, self.OnModif, txb)
cb = wx.CheckBox(self, -1, style=wx.NO_BORDER)
cb.SetValue( AudioRoamerPanel.INFO_LABELS["offset"][1] )
self.__add_modifiable(self, gbs, cb, "offset", 9)
self.Bind(wx.EVT_CHECKBOX, self.OnModif, cb)
gbs.AddGrowableCol(1)
border = wx.BoxSizer()
border.Add(gbs, 1, wx.ALL | wx.EXPAND, 10)
return border
def _create_content_clipping(self):
"""
GUI design for clipping information.
"""
gbs = wx.GridBagSizer(11, 2)
static_tx = wx.StaticText(self, -1, "Clipping rates:")
gbs.Add(static_tx, (0,0), (1,2), flag=wx.LEFT, border=2)
self._wxobj["titleclipping"] = (static_tx,None)
for i in range(1,10):
self.__add_clip(self, gbs, i)
border = wx.BoxSizer()
border.Add(gbs, 1, wx.ALL | wx.EXPAND, 10)
return border
def _create_content_ipus(self):
"""
GUI design for information about an IPUs segmentation...
"""
gbs = wx.GridBagSizer(9, 2)
static_tx = wx.StaticText(self, -1, "Root-mean square:")
gbs.Add(static_tx, (0,0), (1,2), flag=wx.LEFT, border=2)
self._wxobj["titlevolume"] = (static_tx,None)
self.__add_info(self, gbs, "volmin", 1)
self.__add_info(self, gbs, "volmax", 2)
self.__add_info(self, gbs, "volavg", 3)
static_tx = wx.StaticText(self, -1, "")
gbs.Add(static_tx, (4, 0), (1,2), flag=wx.LEFT, border=2)
static_tx = wx.StaticText(self, -1, "Automatic detection of silences:")
gbs.Add(static_tx, (5, 0), (1,2), flag=wx.LEFT, border=2)
self._wxobj["titleipus"] = (static_tx,None)
self.__add_info(self, gbs, "volsil", 6)
self.__add_info(self, gbs, "nbipus", 7)
self.__add_info(self, gbs, "duripus", 8)
border = wx.BoxSizer()
border.Add(gbs, 1, wx.ALL | wx.EXPAND, 10)
return border
# -----------------------------------------------------------------------
# Callbacks to events
# -----------------------------------------------------------------------
def OnModif(self, evt):
"""
Callback on a modifiable object: adapt foreground color.
"""
evtobj = evt.GetEventObject()
evtvalue = evtobj.GetValue()
for (key,defaultvalue) in self.MODIFIABLES.iteritems():
(tx,obj) = self._wxobj[key]
if evtobj == obj:
if evtvalue == defaultvalue:
obj.SetForegroundColour( self._prefs.GetValue('M_FG_COLOUR') )
tx.SetForegroundColour( self._prefs.GetValue('M_FG_COLOUR') )
else:
obj.SetForegroundColour( INFO_COLOUR )
tx.SetForegroundColour( INFO_COLOUR )
obj.Refresh()
tx.Refresh()
return
# -----------------------------------------------------------------------
# Setters for GUI
# ----------------------------------------------------------------------
def SetPreferences(self, prefs):
"""
Set new preferences. Refresh GUI.
"""
self._prefs = prefs
self.SetFont( prefs.GetValue('M_FONT') )
self.SetBackgroundColour( prefs.GetValue('M_BG_COLOUR') )
self.SetForegroundColour( prefs.GetValue('M_FG_COLOUR') )
self.Refresh()
# ----------------------------------------------------------------------
def SetFont(self, font):
"""
Change font of all wx texts.
"""
wx.Window.SetFont( self, font )
for (tx,obj) in self._wxobj.values():
tx.SetFont(font)
if obj is not None:
obj.SetFont(font)
else:
# a title (make it bold)
newfont = wx.Font(font.GetPointSize(), font.GetFamily(), font.GetStyle(), wx.BOLD, False, font.GetFaceName(), font.GetEncoding())
tx.SetFont(newfont)
# ----------------------------------------------------------------------
def SetBackgroundColour(self, color):
"""
Change background of all texts.
"""
wx.Window.SetBackgroundColour( self, color )
for (tx,obj) in self._wxobj.values():
tx.SetBackgroundColour( color )
if obj is not None:
obj.SetBackgroundColour( color )
# ----------------------------------------------------------------------
def SetForegroundColour(self, color):
"""
Change foreground of all texts.
"""
wx.Window.SetForegroundColour( self, color )
for (tx,obj) in self._wxobj.values():
tx.SetForegroundColour( color )
if obj is not None:
obj.SetForegroundColour( color )
# ----------------------------------------------------------------------
# Methods of the workers
# ----------------------------------------------------------------------
def ShowInfo(self):
"""
Estimate all values then display the information.
"""
# we never estimated values. we have to do it!
if self._cv is None:
try:
self.SetChannel(self._channel)
except Exception as e:
ShowInformation(self, self._prefs, "Error: %s"%str(e))
return
# Amplitude
self._wxobj["nframes"][1].ChangeValue( " "+str(self._channel.get_nframes())+" " )
self._wxobj["minmax"][1].ChangeValue( " "+str(self._ca.minmax())+" " )
self._wxobj["cross"][1].ChangeValue( " "+str(self._ca.cross())+" " )
# Modifiable
fm = str(self._channel.get_framerate())
if not fm in AudioRoamerPanel.FRAMERATES:
self._wxobj["framerate"][1].Append( fm )
self._wxobj["framerate"][1].SetStringSelection(fm)
self.MODIFIABLES["framerate"] = fm
sp = str(self._channel.get_sampwidth()*8)
if not sp in AudioRoamerPanel.SAMPWIDTH:
self._wxobj["sampwidth"][1].Append( sp )
self._wxobj["sampwidth"][1].SetStringSelection( sp )
self.MODIFIABLES["sampwidth"] = sp
# Clipping
for i in range(1,10):
cr = self._ca.clipping_rate( float(i)/10. ) * 100.
self._wxobj["clip"+str(i)][1].ChangeValue( " "+str( round(cr,2))+"% ")
# Volumes / Silences
vmin = self._cv.get_volstats().min()
vmax = self._cv.get_volstats().max()
vavg = self._cv.get_volstats().mean()
self._wxobj["volmin"][1].ChangeValue( " "+str(vmin)+" ("+str(amp2db(vmin))+" dB) " )
self._wxobj["volmax"][1].ChangeValue( " "+str(vmax)+" ("+str(amp2db(vmax))+" dB) " )
self._wxobj["volavg"][1].ChangeValue( " "+str(int(vavg) )+" ("+str(amp2db(vavg))+" dB) ")
self._wxobj["volsil"][1].ChangeValue( " "+str(self._cv.search_threshold_vol())+" " )
self._wxobj["nbipus"][1].ChangeValue( " "+str(len(self._tracks))+" " )
d = sum( [(e-s) for (s,e) in self._tracks] )
self._wxobj["duripus"][1].ChangeValue( " "+str(d)+" " )
# -----------------------------------------------------------------------
def SetChannel(self, newchannel):
"""
Set a new channel, estimates the values to be displayed.
"""
# Set the channel
self._channel = newchannel
wx.BeginBusyCursor()
b = wx.BusyInfo("Please wait while loading and analyzing data...")
# To estimate values related to amplitude
frames = self._channel.get_frames(self._channel.get_nframes())
self._ca = AudioFrames(frames, self._channel.get_sampwidth(), 1)
# Estimates the RMS (=volume), then find where are silences, then IPUs
self._cv = ChannelSilence(self._channel)
self._cv.search_silences() # threshold=0, mintrackdur=0.08
self._cv.filter_silences() # minsildur=0.2
self._tracks = self._cv.extract_tracks() # mintrackdur=0.3
b.Destroy()
b = None
wx.EndBusyCursor()
# -----------------------------------------------------------------------
def ApplyChanges(self, from_time=None, to_time=None):
"""
Return a channel with changed applied.
@param from_time (float)
@param to_time (float)
@return (Channel) new channel or None if nothing changed
"""
# Get the list of modifiable values from wx objects
fm = int(self._wxobj["framerate"][1].GetValue())
sp = int(int(self._wxobj["sampwidth"][1].GetValue())/8)
mul = float(self._wxobj["mul"][1].GetValue())
bias = int(self._wxobj["bias"][1].GetValue())
offset = self._wxobj["offset"][1].GetValue()
dirty = False
if from_time is None:
from_frame = 0
else:
from_frame = int( from_time * fm )
dirty = True
if to_time is None:
to_frame = self._channel.get_nframes()
else:
dirty = True
to_frame = int(to_time * fm)
channel = self._channel.extract_fragment(from_frame,to_frame)
# If something changed, apply this/these change-s to the channel
if fm != self._channel.get_framerate() or sp != self._channel.get_sampwidth() or mul != 1. or bias != 0 or offset is True:
wx.BeginBusyCursor()
b = wx.BusyInfo("Please wait while formatting data...")
channelfmt = ChannelFormatter( channel )
channelfmt.set_framerate(fm)
channelfmt.set_sampwidth(sp)
channelfmt.convert()
channelfmt.mul(mul)
channelfmt.bias(bias)
if offset is True:
channelfmt.remove_offset()
channel = channelfmt.get_channel()
dirty = True
b.Destroy()
b = None
wx.EndBusyCursor()
if dirty is True:
return channel
return None
# -----------------------------------------------------------------------
def SaveChannel(self, parentfilename, period=False):
"""
Save the channel in an audio file.
@param parentfilename (str)
@param period (bool) Save a portion of the channel only
"""
s = None
e = None
if period is True:
dlg = PeriodChooser( self, self._prefs, 0., float(self._channel.get_nframes())/float(self._channel.get_framerate()) )
answer = dlg.ShowModal()
if answer == wx.ID_OK:
(s,e) = dlg.GetValues()
try:
s = float(s)
e = float(e)
if e < s: raise Exception
except Exception:
ShowInformation( self, self._prefs, "Error in the definition of the portion of time.", style=wx.ICON_ERROR)
return
dlg.Destroy()
if answer != wx.ID_OK:
return
newfilename = SaveAsAudioFile()
# If it is the OK response, process the data.
if newfilename is not None:
if newfilename == parentfilename:
ShowInformation( self, self._prefs, "Assigning the current file name is forbidden. Choose a new file name.", style=wx.ICON_ERROR)
return
# Create a formatted channel
try:
channel = self.ApplyChanges(s,e)
except Exception as e:
ShowInformation( self, self._prefs, "Error while formatting the channel: %s"%str(e), style=wx.ICON_ERROR)
return
message = "File %s saved successfully."%newfilename
if channel is None:
channel = self._channel
else:
message +="\nYou can now open it with AudioRoamer to see your changes!"
# Save the channel
try:
audio = AudioPCM()
audio.append_channel(channel)
audiodata.io.save(newfilename, audio)
except Exception as e:
message = "File not saved. Error: %s"%str(e)
else:
# Update members
self._filename = newfilename
ShowInformation( self, self._prefs, message, style=wx.ICON_ERROR)
# -----------------------------------------------------------------------
def SaveInfos(self, parentfilename):
"""
Ask for a filename then save all displayed information.
"""
newfilename = SaveAsAnyFile()
# If it is the OK response, process the data.
if newfilename is not None:
content = self._infos_content(parentfilename)
with codecs.open(newfilename, "w", encoding) as fp:
fp.write(content)
# -----------------------------------------------------------------------
# Private methods to list information in a "formatted" text.
# -----------------------------------------------------------------------
def _infos_content(self, parentfilename):
content = ""
content += self.__separator()
content += self.__line(program + ' - Version ' + version)
content += self.__line(copyright)
content += self.__line("Web site: "+ url)
content += self.__line("Contact: "+ author + "("+ contact + ")")
content += self.__separator()
content += self.__newline()
content += self.__line("Date: " + str(datetime.datetime.now()))
# General information
content += self.__section("General information")
content += self.__line("Channel filename: %s"%self._filename)
content += self.__line("Channel extracted from file: "+parentfilename)
content += self.__line("Duration: %s sec."%self._channel.get_duration())
content += self.__line("Framerate: %d Hz"%self._channel.get_framerate())
content += self.__line("Samp. width: %d bits"%(int(self._channel.get_sampwidth())*8))
# Amplitude
content += self.__section("Amplitude")
content += self.__line(AudioRoamerPanel.INFO_LABELS["nframes"][0]+self._wxobj["nframes"][1].GetValue())
content += self.__line(AudioRoamerPanel.INFO_LABELS["minmax"][0]+self._wxobj["minmax"][1].GetValue())
content += self.__line(AudioRoamerPanel.INFO_LABELS["cross"][0]+self._wxobj["cross"][1].GetValue())
# Clipping
content += self.__section("Amplitude clipping")
for i in range(1,10):
f = self._ca.clipping_rate( float(i)/10. ) * 100.
content += self.__item(" factor "+str(float(i)/10.)+": "+str(round(f,2))+"%")
# Volume
content += self.__section("Root-mean square")
content += self.__line(AudioRoamerPanel.INFO_LABELS["volmin"][0]+self._wxobj["volmin"][1].GetValue())
content += self.__line(AudioRoamerPanel.INFO_LABELS["volmax"][0]+self._wxobj["volmax"][1].GetValue())
content += self.__line(AudioRoamerPanel.INFO_LABELS["volavg"][0]+self._wxobj["volavg"][1].GetValue())
# IPUs
content += self.__section("Inter-Pausal Units automatic segmentation")
content += self.__line(AudioRoamerPanel.INFO_LABELS["volsil"][0]+self._wxobj["volsil"][1].GetValue())
content += self.__line(AudioRoamerPanel.INFO_LABELS["nbipus"][0]+self._wxobj["nbipus"][1].GetValue())
content += self.__line(AudioRoamerPanel.INFO_LABELS["duripus"][0]+self._wxobj["duripus"][1].GetValue())
content += self.__newline()
content += self.__separator()
return content
# -----------------------------------------------------------------------
# Private methods.
# -----------------------------------------------------------------------
def __add_info(self, parent, gbs, key, row):
""" Private method to add an info into the GridBagSizer. """
static_tx = wx.StaticText(parent, -1, AudioRoamerPanel.INFO_LABELS[key][0])
gbs.Add(static_tx, (row, 0), flag=wx.ALIGN_CENTER_VERTICAL|wx.LEFT, border=2)
tx = wx.TextCtrl(parent, -1, AudioRoamerPanel.INFO_LABELS[key][1], style=wx.TE_READONLY)
tx.SetMinSize((120,24))
gbs.Add(tx, (row, 1), flag=wx.ALIGN_CENTER_VERTICAL|wx.LEFT, border=2)
self._wxobj[key] = (static_tx,tx)
def __add_clip(self, parent, gbs, i):
""" Private method to add a clipping value in a GridBagSizer. """
static_tx = wx.StaticText(parent, -1, " factor "+str( float(i)/10.)+": " )
gbs.Add(static_tx, (i, 0), flag=wx.ALIGN_CENTER_VERTICAL|wx.LEFT, border=2)
tx = wx.TextCtrl(parent, -1, " ... ", style=wx.TE_READONLY|wx.TE_RIGHT)
gbs.Add(tx, (i, 1), flag=wx.ALIGN_CENTER_VERTICAL|wx.RIGHT, border=2)
self._wxobj["clip"+str(i)] = (static_tx,tx)
def __add_modifiable(self, parent, gbs, obj, key, row):
static_tx = wx.StaticText(parent, -1, AudioRoamerPanel.INFO_LABELS[key][0])
#static_tx = wx.TextCtrl(parent, -1, AudioRoamerPanel.INFO_LABELS[key][0], style=wx.TE_READONLY|wx.TE_LEFT|wx.NO_BORDER)
gbs.Add(static_tx, (row, 0), flag=wx.ALIGN_CENTER_VERTICAL|wx.LEFT, border=2)
gbs.Add(obj, (row, 1), flag=wx.ALIGN_CENTER_VERTICAL|wx.LEFT, border=2)
self._wxobj[key] = (static_tx,obj)
# -----------------------------------------------------------------------
def __section(self, title):
""" Private method to make to look like a title. """
text = self.__newline()
text += self.__separator()
text += self.__line(title)
text += self.__separator()
text += self.__newline()
return text
def __line(self, msg):
""" Private method to make a text as a simple line. """
text = msg.strip()
text += self.__newline()
return text
def __item(self, msg):
""" Private method to make a text as a simple item. """
text = " - "
text += self.__line(msg)
return text
def __newline(self):
""" Private method to return a new empty line. """
if wx.Platform == '__WXMAC__' or wx.Platform == '__WXGTK__':
return "\n"
return "\r\n"
def __separator(self):
""" Private method to return a separator line. """
text = "-----------------------------------------------------------------"
text += self.__newline()
return text
