PSYCHOACOUSTICS: SOUND PERCEPTION PHYSICS OF MUSIC, SPRING 2016.

Slides:

Advertisements

Similar presentations

SOUND PRESSURE, POWER AND LOUDNESS MUSICAL ACOUSTICS Science of Sound Chapter 6.

Advertisements

Periodicity and Pitch Importance of fine structure representation in hearing.

HEARING Sound How the Ears Work How the Cochlea Works Auditory Pathway

Hearing Detection Loudness Localization Scene Analysis Music Speech.

INTRODUCTION TO HEARING. WHAT IS SOUND? amplitude Intensity measured in decibels.

Hearing Aka: Audition. Frequency the number of complete wavelengths that pass through point at a given time. This determines the pitch of a sound.

Sensation and Perception - audition.ppt © 2001 Laura Snodgrass, Ph.D.1 Audition Anatomy –outer ear –middle ear –inner ear Ascending auditory pathway –tonotopic.

A.Diederich– International University Bremen – Sensation and Perception – Fall Frequency Analysis in the Cochlea and Auditory Nerve cont'd The Perception.

A.Diederich– International University Bremen – USC – MMM – Spring 5 1 The Perception of Frequency cont'd.

PH 105 Dr. Cecilia Vogel Lecture 10. OUTLINE  Subjective loudness  Masking  Pitch  logarithmic  critical bands  Timbre  waveforms.

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

Hearing Detection Loudness Localization Scene Analysis Music Speech.

Sensory Systems: Auditory. What do we hear? Sound is a compression wave: When speaker is stationary, the air is uniformly dense Speaker Air Molecules.

Reading Assignment! We’ll discuss the chapter by Gregory in your book on Friday of next week.

PH 105 Dr. Cecilia Vogel Lecture 8. OUTLINE  Exam #1  Hearing  subjective qualities of sound  the ear  intensity vs pressure  pressure and frequency.

PH 105 Dr. Cecilia Vogel Lecture 9. OUTLINE  Finish ear/hearing  Source power level  Sound loudness  sound intensity level  sound pressure level.

There are several clues you could use: 1.arrival time 2.phase lag (waves are out of sync) 3.sound shadow (intensity difference)- sound is louder at ear.

The Auditory System. Audition (Hearing)  Transduction of physical sound waves into brain activity via the ear. Sound is perceptual and subjective. 

Hearing Detection Loudness Localization Scene Analysis Music Speech.

There are several clues you could use: 1.arrival time 2.phase lag (waves are out of sync) 3.sound shadow (intensity difference)- sound is louder at ear.

Sensory Systems: Auditory. What do we hear? Sound is a compression wave: When speaker is stationary, the air is uniformly dense Speaker Air Molecules.

Pheromones are not smells Pheromones are chemical signals sent from one animal to another Pheromones.

Chapter 6: The Human Ear and Voice

CS Spring 2011 CS 414 – Multimedia Systems Design Lecture 2 –Auditory Perception and Digital Audio Klara Nahrstedt Spring 2011.

Frequency Coding And Auditory Space Perception. Three primary dimensions of sensations associated with sounds with periodic waveforms Pitch, loudness.

The ear and perception of sound (Psychoacoustics) Updated 2013Aug05 1.

Beats and Tuning Pitch recognition Physics of Music PHY103.

Psychoacoustics: Sound Perception Physics of Music, Spring 2014.

Exam 1 February 6 – 7 – 8 – 9 Moodle testing centre.

Harmonic Series and Spectrograms

KTH ROYAL INSTITUTE OF TECHNOLOGY Sound, the Auditory System, and Pitch Perception Roberto Bresin DT2350 Human Perception for Information Technology Copyright.

Acoustics. Acoustics is the interdisciplinary science that deals with the study of all mechanical waves in gases, liquids, and solids including vibration,

Hearing Chapter 5. Range of Hearing Sound intensity (pressure) range runs from watts to 50 watts. Frequency range is 20 Hz to 20,000 Hz, or a ratio.

Hearing Our auditory sense We hear sound WAVES Frequency: the number of complete wavelengths that pass through point at a given time. This determines.

Hearing: auditory coding mechanisms. Harmonics/ Fundamentals ● Recall: most tones are complex tones, consisting of multiple pure tones ● The lowest frequency.

 Focuses sound waves onto the ear drum  Two parts 1. The pinna which concentrates sound waves into the auditory canal. 2. The auditory canal which.

Learning Goal Three: Understand how the auditory system registers sounds and how it connects with the brain to perceive it.

Sensory Systems: Auditory. What do we hear? Sound is a compression wave: When speaker is stationary, the air is uniformly dense Speaker Air Molecules.

MUSICAL ACOUSTICS PITCH AND TIMBRE Science of Sound Chapter 7.

Reading Assignment! We’ll discuss the chapter by Gregory in your book on Thursday of next week.

SOUND PRESSURE, POWER AND LOUDNESS MUSICAL ACOUSTICS Science of Sound Chapter 6.

Perception: Hearing Sound: Amplitude – loudness (decibels)

Pitch Perception Or, what happens to the sound from the air outside your head to your brain….

Harmonic Series and Spectrograms BY JORDAN KEARNS (W&L ‘14) & JON ERICKSON (STILL HERE )

Fundamentals of Sensation and Perception

1 Hearing Sound is created by vibrations from a source and is transmitted through a media (such as the atmosphere) to the ear. Sound has two main attributes:

What do we hear? Sound is a compression wave - it only “looks” like a wave if we plot air pressure against time time -> Air Pressure Period - amount of.

Introduction to psycho-acoustics: Some basic auditory attributes For audio demonstrations, click on any loudspeaker icons you see....

Hearing Detection Loudness Localization Scene Analysis Music Speech.

Pitch What is pitch? Pitch (as well as loudness) is a subjective characteristic of sound Some listeners even assign pitch differently depending upon whether.

Sound Chapter 14 Physics Principles and Problems Zitzewitz, Elliot, Haase, Harper, Herzog, Nelson, Nelson, Schuler and Zorn McGraw Hill, 2005.

SOUND PRESSURE, POWER AND LOUDNESS

What is Sound?? n “If a tree falls in the forest and no one is there to hear it, does it make a sound?” n There are 2 ways to answer this: n Objectively.

Physics Acoustics for Musicians selected slides, March 5, 2002 Loudness at different frequencies Critical band Masking The ear Neurological response.

4. The Ear and the Perception of Sound (Psychoacoustics) Updated May 13,

Intro to Fourier Series BY JORDAN KEARNS (W&L ‘14) & JON ERICKSON (STILL HERE )

PSYCHOACOUSTICS A branch of psychophysics

Pitch What is pitch? Pitch (as well as loudness) is a subjective characteristic of sound Some listeners even assign pitch differently depending upon whether.

Pitch What is pitch? Pitch (as well as loudness) is a subjective characteristic of sound Some listeners even assign pitch differently depending upon whether.

MUSICAL ACOUSTICS PITCH AND TIMBRE Science of Sound Chapter 7.

Hearing AKA: Audition.

Intro to Fourier Series

Psychoacoustics: Sound Perception

Fundamentals of Sensation and Perception

Fundamentals of Sensation and Perception

Sound Sound is a type of energy made by vibrations. When any object vibrates, it causes movement in the air particles. These particles bump into the particles.

Auditory Demonstrations

Auditory Demonstrations

Auditory, Tactical, and Olfactory Displays

Presentation transcript:

PSYCHOACOUSTICS: SOUND PERCEPTION PHYSICS OF MUSIC, SPRING 2016

KEY TERMS PLACE THEORY OF HEARING CRITICAL BAND SHARPENING JUST NOTICEABLE DIFFERENCE (JND) OHM’S LAW OF HEARING ATTACK AND DECAY TRANSIENTS PITCH TRACKING MISSING FUNDAMENTAL BINAURAL EFFECTS

HOW DO WE “HEAR”?

ANATOMY AND PHYSIOLOGY: FORM AND FUNCTION Video produced by Brandon Pletsch, Univ. of Georgia Medical School URL:

AUDITORY SYSTEM: AMAZING FACTS 10 OCTAVE RANGE (20 – 20,000 HZ) Ear senses changes 1 part of 10,000,000,000 of atmospheric pressure

AUDITORY CORTEX Reference: URL: Saenz Auditory Neuorscience Group:

PLACE THEORY PERCEPTION OF SOUND DEPENDS ON WHICH REGION (PLACE) OF BASILAR MEMBRANE VIBRATES Images from: Critical band

JND CHANGE IN VALUE OF A VARIABLE (FREQUENCY, INTENSITY) BETWEEN TWO TONES SUCH THAT THE DIFFERENCE JUST NOTICEABLE. FOR INSTANCE: CAN YOU TELL THE DIFFERENCE BETWEEN: VS HZ? 440 VS 441 HZ? 440 VS 444?

EQUAL LOUDNESS CURVE

SUBJECTIVE LOUDNESS Hearing test: JE’s Equal loudness Curve Sensitivity depends on frequency

OHM’S LAW OF HEARING “SOUND QUALITY OF A COMPLEX TONE DEPENDS ONLY ON THE AMPLITUDE OF HARMONICS, NOT THEIR PHASE” Image and sound file source:

ATTACK TRANSIENTS “Turning on” phase is very important for sound perception

FORWARDS AND BACKWARDS

MISSING FUNDAMENTAL You play these….Brain fills in this…

MASKING How do we pick out one voice amongst all the other masking sounds? Alien enjoying cocktail party?! Masking: existence of one tone interfering with perception of another tone.

BINAURAL EFFECTS BRAIN PROCESSES RELATIVE TIMING OF SOUND WAVES AT L AND R EARS