def remove_offset(self):
"""
Remove the offset in the channel
"""
newchannel = Channel()
newchannel.sampwidth = self.sampwidth
newchannel.framerate = self.framerate
avg = audioutils.avg(self.channel.frames, self.sampwidth)
newchannel.set_frames(audioutils.bias(self.channel.frames, self.sampwidth, - avg))
self.channel = newchannel
def bias(self, bias):
"""
Apply a bias on the frames
@param bias (int) the value to bias the frames
"""
newchannel = Channel()
newchannel.sampwidth = self.sampwidth
newchannel.framerate = self.framerate
newchannel.set_frames(audioutils.bias(self.channel.frames, self.sampwidth, bias))
self.channel = newchannel
