© Oxford University Press 2009 11.5b Harmonics A tuning fork produces a note with only one frequency. The shape of the wave on the oscilloscope is very.

Slides:

Advertisements

Similar presentations

Oscilloscope Traces. Looking at sound waves You cant see a sound wave. But you can use an oscilloscope to make a trace which looks the same as the sound.

Advertisements

Musical Terms 2.

Resonance If you have ever blown across the top of a bottle or other similar object, you may have heard it emit a particular sound. The air in the bottle.

MUSIC NOTES Noise Versus Music  What is the difference between noise and music?  Answer: The appearance of the waveform.  What is the difference between.

1. If this standing wave is 3.2 m long, what is the wavelength? (2.56 m)

Properties of sound Sound is a longitudinal wave Longitudinal waves travel at different speeds depending on the medium 25 o C 346m/s, water 1490.

Copyright © 2008 Pearson Education Inc., publishing as Pearson Addison-Wesley Wave interference, boundaries, and superposition Waves in motion from one.

Musical Instruments Contents: What is the difference between high and low notes? Why do different instruments sound different? What does it mean to play.

Resonance: More Practice Resonance occurs when the frequency of the forcing vibration is _________ the natural frequency of the object. A. less thanC.

Find the fundamental frequency and third harmonic of an organ pipe of length 50cm. Assume the organ pipe is closed at one end and the speed of sound in.

A.Diederich– International University Bremen – USC – MMM Spring Sound waves cont'd –Goldstein, pp. 331 – 339 –Cook, Chapter 7.

A brief message from your TAs Tine Gulbrandsen Wahab Hanif.

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

Fundamental Tones and Harmonics. A tight wire or string that vibrates as a single unit produces its lowest frequency, called its fundamental. A vibrating.

Harmonics, Timbre & The Frequency Domain

Questions about Sound in pipes

Standing Waves When an incident wave interferes with a reflected wave to form areas of constructive and destructive interference. When an incident wave.

Sound Waves and Timbre Carla Piper, Ed. D. Music Lesson Activities.

Chapter 12 Objectives Differentiate between the harmonic series of open and closed pipes. Calculate the harmonics of a vibrating string and of open and.

Resonance, Sound Intensity, & Sound Quality Resonance, Sound Intensity, & Sound Quality.

Physics 1200 Review Questions Tuning and Timbre May 14, 2012.

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

A guitar string of length 80cm is tuned to the musical note A which has a (fundamental) frequency of 220Hz. a) Calculate the speed of the wave along the.

Vibrating Strings and Resonance in Air Columns. String Instruments  In many musical instruments, the source sets a string into vibration  Standing waves.

A taut wire or string that vibrates as a single unit produces its lowest frequency, called its fundamental.

A “physical phenomenon that stimulates the sense of hearing.”

13.3. Harmonics A vibrating string will produce standing waves whose frequencies depend upon the length of the string. Harmonics Video 2:34.

Chapter 13 - Sound 13.1 Sound Waves.

resonance occurs when a medium vibrates at the same frequency as the external vibrating force causing the vibration. If the forcing frequency equals.

Chapter 13: Sound & Music. Pitch and Rhythm Pitch Rhythm Pitch: how high or low we hear frequency Pitch and frequency mean the same thing, but can sound.

An organ pipe open at both ends is 1. 5 m long

What about the rubber bands determines pitch? Musical Instruments - Strings  The pitch or frequency of a string is determined by the string’s velocity.

Expanding Your Horizons: Physics of Music Hints

Chapter 12 Section 3: Harmonics.

Sound resonance To every system, if it is disturbed and let free to oscillate by itself, the system will oscillate at its natural frequency e.g. pendulum.

8L SOUND AND HEARING. Sound introduction What causes sound? Name a soft sound. Name a loud sound.

Sound Notes 3 Frequency, Pitch and Music. Frequency Frequency – the number of complete waves ______ _____________. Different sounds have ____________.

M USIC. S TANDING W AVES At the right frequencies a constrained wave will produce a standing wave Standing waves appear stationary Result of constructive.

Harmonics. Each instrument has a mixture of harmonics at varying intensities Principle of superposition Periodics- Repeating patterns of waveforms.

Longitudinal Standing Waves antinodes (max. vibration) nodes (no vibration)

Standing Waves and Resonance Standing Wave: “Standing waves” are formed from two or more traveling waves that collide and are “in tune” with one another.

SoundSection 3 What do you think? A violin, a trumpet, and a clarinet all play the same note, a concert A. However, they all sound different. What is the.

The Mathematics of Sound. Professor Cross’s laser and video displays came out of a desire to visualize sound. Sound, while itself a phenomenon experienced.

The Physics of Music Waves

PHYSICS CLASS ACTIVITY. CLASS ACTIVITY: TUNING FORK FREQUENCY.

If two sounds are only slightly off in terms of frequency The ‘Beats’  Produce a periodic rise and fall of amplitude (volume)  Throbbing Sound = Beats.

Sound Harmonics. Standing Waves on a Vibrating String  On an idealized string, the ends of the string cannot vibrate They should both be nodes  So the.

The Principle of Linear Superposition and Interference Phenomena CHAPTER 17 Interference Constructive and Destructive Interference: BEATS Standing Waves:

12-3 Harmonics.

 Wave energy depends on amplitude, the more amplitude it has, the more energy it has.

15.1 Properties and Detection of Sound Interference of sound waves.

The Production of Sound Waves Every sound wave begins with a vibrating object, such as the vibrating prong of a tuning fork. Sound waves are longitudinal.

13.3 Harmonics pp Mr. Richter. Agenda  Check 13.1 Homework  Finish Notes from 13.2  Forced Vibrations and Resonance  Notes:  Harmonics.

Sound, Waves, uh yea.. Sound! Come  Pitch, loudness, and timbre are all perceived attributes of sound.  Pitch is the perceived frequency.

© Oxford University Press How are the plates moving?

Open Pipe Resonance Plus some examples. Open Pipe Resonance An open pipe resonator is a resonating tube with both ends open The open ends have antinodes.

A taut wire or string that vibrates as a single unit produces its lowest frequency, called its fundamental.

How are the elements of music shared through notation?

Wave Interference A material object will not share its space with another object, but more than one wave can exist at the.

Review – Standing Waves

Sources of Sound To produce sound, we have to make air molecules move back and forth; we can do this either with acoustic vibrations in an enclosed space.

Notes 21.2: RESONANCE.

Standing Waves.

Standing waves review A standing wave occurs when there is constructive interference between a wave and it reflections from a boundary.

Sound and Music Chapters 20 and 21.

Sound Harmonics.

Presentation transcript:

© Oxford University Press b Harmonics A tuning fork produces a note with only one frequency. The shape of the wave on the oscilloscope is very smooth.

© Oxford University Press 2009 Instruments produce notes of more than one frequency. The main note produced is called the fundamental. But other notes are produced at the same time. These are called harmonics. These different notes add together to make the sound that is unique to that instrument. We call this sound its timbre. 11.5b Harmonics

© Oxford University Press 2009 The frequency of the harmonics may be twice, three times, four times or even more times the fundamental frequency. 11.5b Harmonics

© Oxford University Press 2009 All these frequencies together make up the note. The bottom line here shows the wave pattern formed by the fundamental and harmonic frequencies when the note is played on the instrument. 11.5b Harmonics

© Oxford University Press 2009 These traces show the wave patterns of the same note (middle C) when played on different instruments. This is what makes them all sound different even when they are playing the same note. saxophoneviolin clarinet 11.5b Harmonics

© Oxford University Press 2009 Your voice is just the same – everyone has their own unique timbre. 11.5b Harmonics