PITCH QUALITY LOUDNESS AND INTENSITY I CAN HEAR

PITCH QUALITY

LOUDNESS AND INTENSITY I CAN HEAR A SOFT SOUND. I CAN HEAR A LOUD SOUND. EVEN IF THE PITCH AND QUALITY IS SAME, I CAN DIFFERENTIATE THEM. THIS IS LOUDNESS DEPENDS ON AMPLITUDE. HOWEVER, LOUDNESS VARIES FROM PERSON TO PERSON. THEREFORE LOUDNESS IS SUBJECTIVE. LOUDNESS DEPENDS ON • AMPLITUDE • DISTANCE FROM SOURCE • SURFACE AREA OF VIBRATING BODY • DENSITY OF MEDIUM • PRESENCE OF RESONATING BODIES HOWEVER INTENSITY IS THE AMOUNT OF SOUND ENERGY PASSING PER SECOND PER UNIT AREA. THIS CANNOT BE CHANGED. SO THIS IS OBJECTIVE ABOVE 120 d. B, IT CAUSES DAMAGE TO THE EARS

I HEAR A SHRILL NOTE. I HEAR A FLAT NOTE. I AM ABLE TO DISTINGUISH THEM EVEN THOUGH THEY HAVE THE SAME LOUDNESS. THIS IS CALLED PITCH DEPENDS ON FREQUENCY. (e. g) in guitar, you get a high pitch by increasing the tension. In flute, I get a low pitch note when I close the hole at the farthest, as the length of air column is more. As he water level in the bucket increases, the air column decreases which produces a high pitch FREQUENCY IS MEASURABLE WHEREAS PITCH IS NOT MEASURABLE. SO FREQUENCY IS OBJECTIVE WHEREAS PITCH IS SUBJECTIVE: TOUCHING A PERSONS FOREHEAD AND FEELING THE HEAT. YOU CANT MEASURE IT. ONE MIGHT SAY 100, ANOTHER ONE 101. WHEREAS IF YOU PUT A THERMOMETER IN HIS MOUTH, YOU CAN FIND THE EXACT TEMPERATURE. THIS IS OBJECTIVE.

I HEAR A SOUND FROM GUITAR. I ALSO HEAR ANOTHER SOUND FROM PIANO. I AM ABLE TO DISTINGUISH THAT THE INSTRUMENTS ARE DIFFERENT EVEN THOUGH THE PITCH AND LOUDNESS IS SAME. WE CALL IT AS QUALITY OR TIMBRE. TUNING FORK HAS A SINGLE FREQUENCY. A NOTE FROM AN INSTRUMENT HAS A COMBINATION OF VIBRATIONS FROM DIFFERENT FREQUENCIES.