Terms cont’d. Dynamics.

Slides:

Advertisements

Similar presentations

Sound in multimedia How many of you like the use of audio in The Universal Machine? What about The Universal Computer? Why or why not? Does your preference.

Advertisements

Chapter 4: Representation of data in computer systems: Sound OCR Computing for GCSE © Hodder Education 2011.

Terms cont’d. Dynamics. Relative loudness or softness of a sound. A trumpet soft is still louder than an acoustic guitar played loud!

Name ___________________________________________ Date ________________ Period _________ P HYSICS P ART I – S URFING THE W AVES Wave Theory Waves transfer.

PHYSICS OF SOUND PHYSICS OF SOUND HEARING CONSERVATION PROGRAM 1 28 Jan 2013.

Duration The element of time.. Duration Beat - the steady pulse that flows through a piece of music. Fast or slow May be easy to hear (or feel), or it.

Acoustics. Sound  mechanical oscillation  20Hz - 20kHz – audible sound  0,7Hz - 20Hz – infrasound  20kHz – hundreds of MHz - ultrasound.

Digital audio recording Kimmo Tukiainen. My background playing music since I was five first time in a studio at fourteen recording on my own for six months.

Image and Sound Editing Raed S. Rasheed Sound What is sound? How is sound recorded? How is sound recorded digitally ? How does audio get digitized.

Logarithms Powers of 10. log ab = log a + log b log 1/a = -log a.

Hearing and the Ear. Ear drum Semicircular canal Hammer, Anvil Stirrup Cochlea Nerve to brain Eustachian tube.

Advanced Lecture.  dynamic range The ratio of the loudest (undistorted) signal to that of the quietest (discernible) signal in a unit or system as expressed.

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

Spencer Fuller Colin Rex and Chase Lefort.  What is a mixer?  A mixer is a piece of equipment used in the production of audio, by connecting all of.

Introduction to Sound Sounds are vibrations that travel though the air or some other medium A sound wave is an audible vibration that travels through.

LOOK 8/19/2015Theatre Arts 1(T) Sound: Properties and Functions Theatre Arts 1(T)

Audio Production Basics. Pros and Cons of Digital Recording Pros – Much easier for the average person. Much less cumbersome Will not deteriorate over.

Senses- Ears Hearing and balance are the main functions of hearing. Hearing works with the other 4 senses to aid us in obtaining information and keeping.

Recording Arts…Audio Fall Range of Human Hearing 20 Hz – 20,000 Hz or 20 Hz – 20 kHz.

Introduction to Interactive Media 10: Audio in Interactive Digital Media.

Understanding Decibels

Lecture # 22 Audition, Audacity & Sound Editing Sound Representation.

Computing with Digital Media: A Study of Humans and Technology Mark Guzdial, School of Interactive Computing.

Pitch, Loudness, and Quality of Sound by by Rifki Irawan Rifki Irawan.

Art 321 Sound, Audio, Acoustics Dr. J. Parker. Sound What we hear as sound is caused by rapid changes in air pressure! It is thought of as a wave, but.

Russell Taylor. How Sound Works Sound “source” creates variations in air pressure Main source output is Speakers Use vibrating cones which mimic the signal.

Acoustics Waveform Frequency Intensity Resonance Sound Propagation.

Dynamic Range and Dynamic Range Processors

COSC 1P02 Introduction to Computer Science 4.1 Cosc 1P02 Week 4 Lecture slides “Programs are meant to be read by humans and only incidentally for computers.

Introduction to SOUND.

Alice Workshop Working with Sound. Sound Working with sound is appealing to students Demo: Penguin Sound.

More Meaningful Jargon Or, All You Need to Know to Speak Like a Geek Sound.

Revision CUS30109 Certificate III in music. Microphones - Condenser w phantom power - Dynamic - What each is used for - Polar patterns/ frequency response.

Audio Communications: Sound Mr. Butler Communication Systems John Jay High School Wappingers Central School District UPDATED 11/2011.

Psychophysics of Intensity Amplitude = Loudness Amplitude = Pitch Scales of Intensity –Decibel (dB) Scales Logarithmic (x2 = 3 dB; x1 million = 60 dB)

SOUND Sound Design is extremely important to the success of a show and for the audience to have a “total” experience Sound can tell its own story.

Wed. Mar. 12 Do Now: What kind of wave is a sound wave?

Sound 3/27/15. Big Waves Video Big Waves: Ct1U&feature=related Ct1U&feature=related.

 What is noise?  What is noise pollution?  Noise measurement.  Causes of noise pollution.  Effects of noise pollution.  Difference between noise.

Objective Sound and Psychoacoustics. Viers on Location Sound Gathering production sound Nat, b-roll, interview, dialog “Technique will trump technology”

Digital Audio Hygiene Alistair Hirst OMNI Audio Theory and Practice.

 Sound is a longitudinal wave created by a vibrating object.  Sound is a mechanical wave.  PhET Simulation PhET Simulation  Demo: Standing Sound Waves.

Waves Sound & Light.

Sound Waves Vibration of a tuning fork.

Chapter 4 Fundamentals of Digital Audio

© 2016 Pearson Education, Inc., Hoboken, NJ. All rights reserved.

Multimedia: making it Work

Loudness level (phon) An equal-loudness contour is a measure of sound pressure (dB SPL), over the frequency spectrum, for which a listener perceives a.

Vocabulary For Audio Recording.

Loudness level (phon) An equal-loudness contour is a measure of sound pressure (dB SPL), over the frequency spectrum, for which a listener perceives a.

Vocabulary Audio Recording for

© 2016 Pearson Education, Inc., Hoboken, NJ. All rights reserved.

Hodgepodge Sound Travels Human Ear Vocabulary Decibels

Hodgepodge Sound Travels Human Ear Vocabulary Decibels

Loudness level (phon) An equal-loudness contour is a measure of sound pressure (dB SPL), over the frequency spectrum, for which a listener perceives a.

Introduction to Digital Audio

"Digital Media Primer" Yue-Ling Wong, Copyright (c)2013 by Pearson Education, Inc. All rights reserved.

EFC Media Center Training

Introduction to Digital Audio

Introduction to Digital Audio

WAVE INTERACTIONS.

Introduction to Digital Audio

Chapter 4: Representing sound

Games Development Practices Sound Effects

Assist. Lecturer Safeen H. Rasool Collage of SCIENCE IT Dept.

Introduction to Digital Audio

Digital Audio Application of Digital Audio - Selected Examples

L6 – Hearing and the Ear Learning Objectives:

Presentation transcript:

Terms cont’d. Dynamics

Dynamics Relative loudness or softness of a sound. A trumpet soft is still louder than an acoustic guitar played loud!

Decibel A measurement of volume. Not relative like musical dynamics, but objective.

SPL - Sound Pressure Level Auditory threshold at 1 kHz 0 dB

SPL - Sound Pressure Level Light leaf rustling, calm breathing 10 dB

SPL - Sound Pressure Level Very calm room 20 - 30 dB

SPL - Sound Pressure Level Normal conversation at 1 m 40 - 60 dB

SPL - Sound Pressure Level Washing machine, dish washer 50-53 dB

SPL - Sound Pressure Level TV (set at home level) at 1 m approx. 60 dB

SPL - Sound Pressure Level Handheld electric mixer 65 dB

SPL - Sound Pressure Level Passenger car at 10 m 60 - 80 dB

SPL - Sound Pressure Level Hearing damage (over long-term exposure, need not be continuous) 85 dB

SPL - Sound Pressure Level Traffic on a busy roadway at 10 m 80 - 90 dB

SPL - Sound Pressure Level Jack hammer at 1 m approx. 100 dB

SPL - Sound Pressure Level Jet engine at 100 m 110 - 140 dB

SPL - Sound Pressure Level Hearing damage (possible) approx. 120 dB

SPL - Sound Pressure Level Vuvuzela horn at 1 m 120 dB

SPL - Sound Pressure Level Threshold of pain 130 dB

SPL - Sound Pressure Level Jet engine at 30 m 150 dB

SPL - Sound Pressure Level M1 Garand rifle being fired at 1 m 168 dB

SPL - Sound Pressure Level .30-06 rifle being fired 1 m to shooter's side 171 dB (peak)

SPL - Sound Pressure Level Rocket launch equipment acoustic tests ~165 dB

SPL - Sound Pressure Level Stun grenades 170 - 180 dB

SPL - Sound Pressure Level Theoretical limit for undistorted sound at 1 atmosphere environmental pressure ~194.094 dB

SPL - Sound Pressure Level Shockwave (distorted sound waves > 1 atm; waveform valleys are clipped at zero pressure) >194 dB

Musical Dynamics Musical Dynamics A piece of music may change in dynamic level throughout. Live music is especially good for hearing dynamics. Subtle variations in a performance by musicians, being sensitive to the sounds around them.

Musical Dynamics A recording on CD is also excellent for capturing dynamics, as the available dynamic range is far better than on other recording media (tapes, records, and other analog formats).

Compression Radio and mp3 formats are not ideal for hearing dynamics. The recording is modified with Compression. Compression “squeezes” the dynamic levels, making loud sounds softer, and soft sounds louder.

Compression

Normalize A way of modifying sound to “peak” at the maximum volume. Analysis of a computer sound byte will display the current volume level, as well as show the maximum potential volume before distortion / clipping / overload.

Normalize Before After Add compression

The Loudness Wars The movement in audio recording and production that strives to get the most audio density into each recording. Record a sound, compress it, normalize it, compress it, normalize it, compress it, etc. Eliminates the distinction between loud and soft - everything is loud or “hot”.

Loudness Wars A recent (within the past 20 years or so) production technique to obtain more density from recorded audio. The selected audio is compressed and normalized several times to even out the dynamic range, but enable the entire sample to be louder. It is not only louder, but saturated with signal. Each track is processed this way, and the resulting mix is very dense, and loud.