THTR 3530 : Sound Midterm
Document Summary
10/17/2013 1:42:00 am: sound- disruptions in the air that can be perceived in the human hearing range, movement of sound, generation- what makes the sound, transmition- the passage of sound, reception- receiver of sound. Reception: reaction of sound, reflection- bouncing back, absorption. Transduction- changing from one form of energy to another. Reverberation: loudness, brightness- the clarity of the sound. Darker=more muffled: measurement of sound, amplitude (loudness)- the measure of the how low or high a sound wave is. Ration between acoustic & electrical powers: frequency (pitch)- the cycles, complete movement of a wave, per second. Human hearing range- 20 hz- 20 khz. Sine= clearest sound: octave- interval between any 2 frequencies that have a ratio of 2-1 (10 octaves in human range, sound pressure level (spl, measurement of acoustic sound pressure. Generation vs. perception: pressure of sound vibration measured in db spl, human hearing range: 0-140 db spl. Professional level: preamplication- required to boost mic level to line level.
