Richards, A M Most comfortable loudness for pure tones and speech in the presence of masking noise. [electronic resource] - Journal of speech and hearing research Sep 1975 - 498-505 p. digital Publication Type: Journal Article ISSN: 0022-4685 Standard No.: 10.1044/jshr.1803.498 doi Subjects--Topical Terms: Acoustic Stimulation--methodsAdultAuditory PerceptionHumansPerceptual MaskingSpeech