'''
Utilities for generating sound.
'''

__id__        = "$Id$"
__version__   = "$Revision$"
__date__      = "$Date$"
__license__   = "LGPL"


class SoundGenerator():

    def __init__(self):
        pass

    # Progressbar 
    def getFreqForPercentage(self, percentage):
#        if percentage < 7: # whe have to adjust this, otherwhise the first beeps are too deep
#             return( int((98 + percentage * 5.4)))
        return( int(100 + percentage * (percentage / 3.5 + 10 )))

    def getVolumeFactorForPercentage(self, percentage):
        return(1 - (percentage / 120)) # then higher then more quiter (we wont damage the ears).

    def getDurationForPercentage(self, percentage):
            if percentage >= 99: #long beeps for the last two percent (to notify the end)
                return(1)
            return (0.075)

    def isProgressBarBeepEnabled(self):
        return (True)