Abstract
We analyzed the consciousness structure of canal sound space and detected principal components and sound factors of sound image space. Sensory tests applying to 10 types of waterways were carried out on 84 subjects to gain a psychological image of stream sound. Psycholdgical image of stream sounds is made up of 2 elements, namely, loudness and melodious of sound. Next, sound physical analysis was implemented to quantify sound characteristics. Sound factors affecting loudness were sound level and sound factor affecting melodious were spectrum envelope. Stream sounds with a local maximum of sound pressure level covering the frequency range from 500 to 4000 Hz were judged by subjects as a high-pitched sound.
