Possibility of
Using a Membrane with Plastic Foil for Transferring Sound Signals
of-Human Speech
Jovan Radulović
Radovan Karkalić
The paper presents the results of the investigation of a possibility
of sound signal i.e. human speech transfer by a membrane with
plastic poly(ethylene terephtalate) foil. The basic terms of
poly(ethylene terephtalate) and the acoustic characteristics of
polymeric materials are mentioned. The procedures and equipment used
for the determination of functional characteristics of a talking
membrane containing poly(ethylene terephtalate) foil are described.
The obtained results of the investigation of the acoustic properties
of the talking membrane (transfer frequency characteristics, speech
understandability index and speech reduction factor) are acceptable
and they point out to a possibility of using poly(ethylene
terephtalate) foil in the equipment for transfering sound signals of
human speech.
Key words: plastics, poly(ethylene terephtalate), foil,
membrane, acoustic properties, speech transfer, speech signal.