human 196 noise 147 Humans 140 article 123 Signal to noise ratio 113 male 103 female 94 Article 91 adult 91 signal noise ratio 89 controlled study 82 Technology: general issues 80 History of engineering and technology 77 human experiment 55 Male 50 Female 48 Noise 48 physiology 48 Adult 45 algorithm 39 Acoustic noise 38 Audition 36 procedures 36 Animals 32 speech perception 31 Research & information: general 30 noise injury 30 simulation 30 Speech Perception 29 animal 29