Speech Intelligibility Devices Market
Speech Intelligibility Devices Market size and Key Trends in terms of volume and value 2017-2027
Speech is the basic mode of communication for humans , and hence it is of utmost importance that it is heard intelligibly . The intelligibility of speech relies upon the properties such as acoustical data in which the voice is transmitted from the speaker to the listener . Furthermore , an important aspect of determining the speech intelligibility is the level of background noise . Even though there have been numerous efforts to factually quantify the speech intelligibility , the best method which is widely used is no doubt the Speech Transmission Index ( STI ) and its derivatives . The speech transmission index is based on the relation between intensity modulations and perceived speech intelligibility in the speaker ’ s voice . The Modulation Transfer Function ( MTF ) defines to what amount the modulation is conveyed from the source to the receiver , as the modulation frequency varies from 0.63 to 12.5 Hz . Thus , the modulation transfer function relies on the device properties and the noise produced in the background . Human communication is a continuous waveform with a fundamental frequency which varies from 100 to 400 Hz ( The average is about 200 hertz for women and 100 hertz for men ).
A recent research have come up with a development that the criminals and suspects of crimes can be identified through their recorded voice during that particular instant of crime with the use of speech intelligibility devices . The voice modulation techniques have found application in investigation , defense as well as entertainment sectors . Since sound engineering is a hopeful sector in the field of science and technology , speech intelligibility gadgets will gain significant traction in the market over the forecast period
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