SUBJECTIVE ATTRIBUTES OF SOUND Acoustics of Concert Halls and Rooms Science of Sound, Chapters 5,6,7 Loudness, Timbre.

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SUBJECTIVE ATTRIBUTES OF SOUND Acoustics of Concert Halls and Rooms Science of Sound, Chapters 5,6,7 Loudness, Timbre

FOUR ATTRIBUTES USED TO DESCRIBE A SOUND: Loudness Pitch Timbre Duration EACH OF THESE DEPENDS ON ONE OR MORE PHYSICAL PARAMETERS THAT CAN BE MEASURED: Sound pressure Frequency Spectrum Duration (measured) Envelope Relating the SUBJECTIVE QUALITIES to the PHYSICAL PARAMETERS that we can MEASURE OBJECTIVELY Is an important problem in PSYCHOACOUSTICS

DEPENDENCE OF SUBJECTIVE QUALITIES OF SOUND ON PHYSICAL PARAMETERS

LOUDNESS LEVEL Contours of equal loudness are labeled phons At 1000 Hz, Loudness Level = L p

SOUND LEVEL METER

PLOT YOUR OWN FREQUENCY RESPONSE ASSIGNMENT: Plot your own frequency response curves by using

HOW DOES LOUDNESS DEPEND ON FREQUENCY?

LOUDNESS SCALING

LOUDNESS OF COMPLEX TONES: CRITICAL BANDS Loudness depends mainly on SOUND PRESSURE. but it also depends on FREQUENCY, SPECTRUM and DURATION

DEPENDENCE OF LOUDNESS ON BANDWIDTH

LOUDNESS OF COMBINED SOUNDS

RANGE OF FREQUENCY AND INTENSITY OF THE EAR

MUSICAL DYNAMICS AND LOUDNESS

HOW DOES LOUDNESS DEPEND ON PARTIAL MASKING?

HOW DOES LOUDNESS DEPEND ON DURATION?

EFFECT OF TONE ENVELOPE ON TIMBRE

EFFECT OF ENVELOPE ON TIMBRE PIANO NOTES PLAYED FORWARD AND BACKWARD