Guerino Mazzola (Fall 2015 © ): Honors Seminar II.1Physical Reality II.1.1 (F Sept 11) Sound Anatomy.

Slides:

Advertisements

Similar presentations

Why is the amplitude spectrum important?

Advertisements

A.Diederich– International University Bremen – USC – MMM Spring instrument ! air ! listener source ! medium ! receptor 1.The source emits. 2.The.

Harmonic Series and Spectrograms 220 Hz (A3) Why do they sound different? Instrument 1 Instrument 2Sine Wave.

1 Two waves passing through the same region will superimpose - e.g. the displacements simply add Two pulses travelling in opposite directions will pass.

Reflections Diffraction Diffusion Sound Observations Report AUD202 Audio and Acoustics Theory.

SWE 423: Multimedia Systems Chapter 3: Audio Technology (1)

Sound waves and Perception of sound Lecture 8 Pre-reading : §16.3.

Pressure waves in open pipe Pressure waves in pipe closed at one end.

Music Physics 202 Professor Lee Carkner Lecture 9.

Exam and Assignment Dates Midterm 1 Feb 3 rd and 4 th Midterm 2 March 9 th and 10 th Final April 20 th and 21 st Idea journal assignment is due on last.

Questions About resonances and Sound waves. A sound wave travels from air into water. What will change due to the increase in speed? a. The wavelength.

Waveform and Spectrum A visual Fourier Analysis. String with fixed ends.

Equalization Changing the curve. What is an EQ? An Equalizer –Is generally a frequency-specific amplifier –Is made up of filters (passive or active) –Is.

Square wave Fourier Analysis + + = Adding sines with multiple frequencies we can reproduce ANY shape.

Human Psychoacoustics shows ‘tuning’ for frequencies of speech If a tree falls in the forest and no one is there to hear it, will it make a sound?

Harmonic Series and Spectrograms

Standing waves on a string (review) n=1,2,3... Different boundary conditions: Both ends fixed (see above) Both ends free (similar to both ends fixed )

Guerino Mazzola (Fall 2015 © ): Music Freshman Seminar IINTRODUCTION I.2 (W Sept 09) Music Oniontology Ontology = ways of being, of existing Oniontology.

Calculate the speed of 25 cm ripples passing through water at 120 waves/s.

Copyright 2004 Ken Greenebaum Introduction to Interactive Sound Synthesis Lecture 11: Modulation Ken Greenebaum.

L 5 Review of Standing Waves on a String. Below is a picture of a standing wave on a 30 meter long string. What is the wavelength of the running waves.

Wave Motion. Wave Types Longitudinal –Motion parallel to energy transport Transverse –Motion perpendicular to energy transport.

CH. 21 Musical Sounds. Musical Tones have three main characteristics 1)Pitch 2) Loudness 3)Quality.

Physics Acoustics for Musicians

Frequency Modulation. Listening Example Keith Kothman In Time (1986) for clarinet and tape.

PHY238Y Lecture 8  Sound waves  The speed of sound  Traveling sound waves  Intensity and sound level References: Haliday, Resnick, Walker: Fundamentals.

SOUND WAVES & BEAT FREQUENCY. SOUND WAVES Sound waves are caused by vibrations Vibrations cause contraction and expansion of an object, which creates.

The Principle of Linear Superposition and Interference Phenomena

Fundamentals of Musical Acoustics. What is sound? air pressure time.

Frequency Higher frequency = high sound = More waves = shorter wavelength Low frequency = Low sound =Less waves= longer wavelength.

Physics 1251 The Science and Technology of Musical Sound Unit 1 Session 7 Good Vibrations Unit 1 Session 7 Good Vibrations.

Guerino Mazzola (Fall 2015 © ): Introduction to Music Technology IIIDigital Audio III.2 (M Oct 12) Finite Fourier Theory.

Guerino Mazzola (Fall 2015 © ): Honors Seminar II.3Mental Reality II.3.2 (W Sept 30) The Euler Space.

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

CHAPTER 12: SOUND Sound is a longitudinal wave. Sound comes from a source, travels in a medium, as longitudinal waves, and is sensed by our ear.

CHAPTER 4 COMPLEX STIMULI. Types of Sounds So far we’ve talked a lot about sine waves =periodic =energy at one frequency But, not all sounds are like.

Closed Pipe Pipe closed at ONE end: closed end pressure antinode air press. L = /4 L.

Guerino Mazzola (Spring 2016 © ): Performance Theory II STRUCTURE THEORY II.1 (Tu Feb 03) Tuning, Intonation, and Dynamics.

Objectives Demonstrate knowledge of the nature of sound waves and the properties sound shares with other waves. Solve problems relating frequency, wavelength,

Guerino Mazzola (Fall 2015 © ): Honors Seminar IV.3 Communication IV.3.1 (Fr Nov 06) MIDI.

Guerino Mazzola (Fall 2015 © ): Honrs Seminar II.1Physical Reality II.1.2 (F Sept 16) Hearing with Ear and Brain.

The Spectrum n Jean Baptiste Fourier ( ) discovered a fundamental tenet of wave theory.

Basic Acoustics. Sound – your ears’ response to vibrations in the air. Sound waves are three dimensional traveling in all directions. Think of dropping.

Guerino Mazzola (Fall 2015 © ): Honors Seminar II.3Mental Reality II.3.1 (M Sept 28) Beyond physics and psychology.

Types of Synthesizers and How They Work

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

MEASUREMENTS IN FREQUENCY DOMAIN: GENERAL ASPECTS.

Synthesizing a Clarinet Nicole Bennett. Overview  Frequency modulation  Using FM to model instrument signals  Generating envelopes  Producing a clarinet.

Sound. Characteristics Loudness --> Amplitude Pitch -->frequency.

Modulation and Multiplexing Broadband Transmission – A carrier is a high frequency signal that is modulated by audio, video, or data. – A radio-frequency.

II Acoustic Reality II.3 (W Sept 13) Fourier.

Resources Doppler automation:

Standing Waves.

II.1 Physical Reality II.1.1 (F Sept 08) Sound Anatomy.

II Acoustic Reality II.4 (F Sept 22) FM, Wavelets, and Physical Modeling.

Determine the l, f, & T of the 49th overtone of a 4

Sound Physics /16/2018 Lecture IV.

II Acoustic Reality II.4 (F Sept 21) FM, Wavelets, and Physical Modeling.

Sound Waves And you.

Intro to Fourier Series

Standing waves.

Calculating Wave Speed

Lab 6: Sound Analysis Fourier Synthesis Fourier Analysis

Sound Waves And you.

Chapter 12 Notes.

Sound Waves And you.

Presentation transcript:

Guerino Mazzola (Fall 2015 © ): Honors Seminar II.1Physical Reality II.1.1 (F Sept 11) Sound Anatomy

Guerino Mazzola (Fall 2015 © ): Honors Seminar air waves 343 m/s The overall picture instrument (sound source) musician auditory cortex f = sound wave frequency pitch( f ) = 1200/log 10 (2). log 10 ( f ) + const. [Ct] (Cent) A = sound wave pressure amplitude loudness(A ) = 20. log 10 (A/A 0 ) + const. [dB] (Dezibel) A 0 = N/m 2 (threshold) ear room acoustics Weber-Fechner

Guerino Mazzola (Fall 2015 © ): Honors Seminar

Sound anatomy A.Classical Joseph Fourier (partials/overtones) ~ 1800 B.Frequency Modulation (FM) John Chowning ~ 1970 C.Wavelets (Jean Morlet et al.) ~ 1984 D.Physical Modeling (Claude Cadoz et al.) ~ 1989

Guerino Mazzola (Fall 2015 © ): Honors Seminar Sound anatomy A.Classical Joseph Fourier (partials/overtones) ~ 1800 wave w shift and squeeze support envelope H + w. H =

Guerino Mazzola (Fall 2015 © ): Honors Seminar Sound anatomy A.Classical Joseph Fourier (partials/overtones) ~ 1800 wave w w(t) = A c + A 1 sin(2 .ft+Ph 1 ) + A 2 sin(2 .2ft+Ph 2 ) + A 3 sin(2 .3ft+Ph 3 ) +... fundamental = 1st partial = 1st overtone 2nd partial = 2nd overtone amplitude length of arrow phase (angle) every periodic function!!!

Guerino Mazzola (Fall 2015 © ): Honors Seminar Sound anatomy Amplitude spectrum w(t) = A c + A 1 sin(2 .ft+Ph 1 ) + A 2 sin(2 .2ft+Ph 2 ) + A 3 sin(2 .3ft+Ph 3 ) +...

Guerino Mazzola (Fall 2015 © ): Honors Seminar Sound anatomy A.Classical Joseph Fourier (partials/overtones) ~ 1800 B.Frequency modulation (FM) John Chowning ~ 1970 W(t) = A c + A 1 sin(2 .ft+Ph 1 + A 2 sin(2 .2ft+Ph 2 + A 3 sin(2 .3ft+Ph 3 ))) carriermodulatormodulator Yamaha DX7 carrier modulator w(t) = A c + A 1 sin(2 .ft+Ph 1 ) + A 2 sin(2 .2ft+Ph 2 ) + A 3 sin(2 .3ft+Ph 3 ) +...

Guerino Mazzola (Fall 2015 © ): Honors Seminar Sound anatomy A.Classical Joseph Fourier (partials/overtones) ~ 1800 B.Frequency Modulation (FM) John Chowning ~ 1970 C.Wavelets (Jean Morlet et al.) ~ 1984

Guerino Mazzola (Fall 2015 © ): Honors Seminar Sound anatomy A.Classical Joseph Fourier (partials/overtones) ~ 1800 B.Frequency Modulation (FM) John Chowning ~ 1970 C.Wavelets (Jean Morlet et al.) ~ 1984 D.Physical Modeling (Claude Cadoz et al.) ~ Singer Synthesis: Perry Cook