WEEK 3 - Reverb, Echo, &.pdf - WEEK 3 Reverb Echo Thursday 5:27 PM QUICK REVIEW Ear ○ All these parts-> designed to understand speech ○ Outside

WEEK 3 - Reverb, Echo, &.pdf - WEEK 3 Reverb Echo...

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QUICK REVIEW: Ear All these parts --> designed to understand speech Outside parts --> collect sounds Can locate sound --> we have two ears - Acoustics Frequency > measured in Hertz (Hz) Amplitude > measured in Watt (W) Spectrum > Complex frequencies - Waveforms Transverse wave --> pushing back and forth --> slinky - Frequency range Different animals hear different sounds - Compression and rarefaction Tuning fork is hit --> vibrates --> pushing and pulling air - Envelope to describe the shape of the sound - Phase In phase --> Out of phase --> cancel each other out --> noise canceling earphones Sound moving in space - Psychoacoustics Pitch > psychological perception of how low or high a given sound is (related to frequency) Loudness > psychological perception of the volume, softness or loudness of a given sound ( related to amplitude) Humans do not hear all frequencies § Perceived loudness --> Minimum audible § Timbre > the character or quality of a sound i.e. its unique, recognizable 'texture' § - WEEK 3 - Reverb, Echo, & Thursday, September 19, 2019 5:27 PM
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SOUND IN SPACE How we hear the world --> not through vision, but by listening - Insert table of hearing and vision HOWEVER, vision and hearing interact. Consider the McGurk Effect - Sound exists in time! - Reverberation = is when sound is either reflected so many times Really fast echo --> it blends together --> can't tell the difference because the echo's are so fast - Echo = Hear those repeats - REVERB How long a reverb is --> depends on your walls - Sound source hits listener directly --> then bouncing off the walls --> loses some energy - gets quieter - Reverberant sound field - Reverberant sound decay Sound decays in an approximately exponential fashion -
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