# Functions
GetBitsPerSample return bits per sample.
GetBitsRate returns bit rate from header.
GetBitsRateCalc calculates bits per sample - sometimes there is incorect value for bitsrate in header.
GetChannels return channels.
GetSampleRate return sample rate from header.
GetSize get data bits size.
IsValid test if wav binary data is OK, at least the size and contains data header key.
SizeBytes return wav size bytes.
TakeData copy data.
TakeHeader copy header.