Elektroakustischer Stimmverstärker für Oesophagusersatzsprache und Phonastheniker
- 11 Downloads
An electroacoustic amplifier for esophageal voice and phonasthenia
A portable electroacoustic amplifier is described. By means of electric filters the intellegibility of low voices and of voices hardly understandible due to the distribution of their frequencies is improved. The engineering ist outlined and possibilities and limitations of its use are dicussed based on frequency analysis of different speakers with and without apparatus.