Relaciones entre ansiedad social y rasgos, estilos y trastornos de la ... by Caballo, Vicente E.; Salazar, Isabel C.; Irurtia, Maria Jesus; Benito Arias; Guillen, Jose Luis / Behavioral Psychology/Psicologia Conductual.
Dictaphone was prominent in the provision of multi-channel recorders, used extensively in the emergency services to record emergency telephone calls (to numbers such as 911, 999, 112) and subsequent conversations.
1 Idiophones are musical instruments in which a vibrating solid material is used to produce sound. 2  Membranophones are musical instruments that have vibrating stretched membranes or skin that produce sound.  Aerophones are musical instruments which produce sound by a vibrating mass of air.