Search results for [Acoustic phenomena in nature] at NC Cardinal

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Voices of the wild : animal songs, human din, and the call to save natural soundscapes / by Krause, Bernie,1938-author.(CARDINAL)724974;

Includes bibliographical references and index.The birth of the soundscape -- The challenges -- New progress -- The world through soundscapes -- The future.Krause’s narrative—supplemented by exclusive access to field recordings from the wild—draws on a compelling range of personal anecdotes, histories, and examples to document his early exploration of this field and to lay the groundwork for future generations.Since 1968, Bernie Krause has traveled the world recording the sounds of remote landscapes, endangered habitats, and rare animal species. Through his organization, Wild Sanctuary, he has collected the soundscapes of more than 2,000 different habitat types, marine and terrestrial. With powerful illustrations and compelling stories, Krause provides a manifesto for the appreciation and protection of natural soundscapes. In his previous book, The Great Animal Orchestra, Krause drew readers’ attention to what Jane Goodall described as “the harmonies of nature . . . [that are being] one by one by one, snuffed out by human actions.” He now explains that the secrets hidden in the natural world’s shrinking sonic environment must be preserved, not only for our scientific understanding, but for our cultural heritage and humanity’s physical and spiritual welfare.

Subjects: Nature sounds.; Soundscapes (Music); Acoustic phenomena in nature.; Bioacoustics.; Sound; Sound;

Available copies: 1 / Total copies: 1

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Sounds wild and broken : sonic marvels, evolution's creativity, and the crisis of sensory extinction / by Haskell, David George,author.(CARDINAL)398304;

Includes bibliographical references (pages 383-416) and index.Origins. Primal sound and the ancient roots of hearing ; Unity and diversity ; Sensory bargains and biases -- The flourishing of animal sounds. Predators, silence, wings ; Flowers oceans, milk -- Evolution's creative powers. Air, water, wood ; In the clamor ; Sexuality and beauty ; Vocal learning and culture ; The imprints of deep time -- Human music and belonging. Bone, ivory, breath ; Resonant spaces ; Music, forest, body -- Diminishment, crisis, and injustice. Forests ; Oceans ; Cities -- Listening. In community ; In the deep past and future."A rich exploration of how the evolution of both natural and manmade sounds have shaped us and the world, and how the world's acoustic diversity is currently in grave danger of being destroyed. We live on a planet that is wrapped in the diverse acoustic marvels of song and speech. Yet never has this diversity been so threatened as it is now. Braiding his experience as a listener and an ecologist with the latest scientific discoveries, David Haskell explores the acoustic wonders of our planet. Starting in deep time with the origins of animal song and traversing the whole arc of Earth's history, he illuminates and celebrates the creative processes that have produced the varied sounds of our world. From the powers of animal sexuality and environmental change, to the unpredictable, improvisational whims of genetic evolution and cultural change, sounds on Earth are the products of and catalysts for vibrant ecosystems. Four interconnected sensory crises are currently diminishing the vitality of our sonic world. Deforestation is erasing the most complex communities of sounds the world has ever known. In the oceans, machine noise has created a living hell for the most acoustically sensitive animals on the planet. In cities, noise has resulted in dire sonic inequities among people, the result of racism, sexism, and power asymmetries. Last, in forgetting or being barred from hearing the voices of the living Earth, we lose both the experience of joyful connection and the foundation for ethics and action. As wild sounds disappear forever and human noise smothers other voices, the Earth becomes flatter, blander. According to Haskell, this decline is not a mere loss of sensory ornament. Sound is a generative force, and so the erasure of sonic diversity makes the world less creative. His book is an invitation to listen, wonder, belong, and act."--

Subjects: Bioacoustics; Nature sounds; Acoustic phenomena in nature; Sound;

Available copies: 12 / Total copies: 13

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Fundamentals of musical acoustics / by Benade, Arthur H.(CARDINAL)182185;

Includes bibliographical references and index.1. Preliminaries to a study of musical acoustics : Musical acoustics: the meeting place of music, vibration physics, auditory science and craftsmanship ; The organization of this book ; A brief operating manual -- 2. Impulsive sounds, alone and in sequence : Sequences of impulsive sounds ; A scale of reference pitches ; Repetition rates of rhythmic patterns ; Electronically controlled repetition rates ; Examples, experiments and questions -- 3. Simple relations of sounds and motions : Mechanical motion of sound source and eardrum ; The representation of motion ; Displaying motion: the strip chart recorder and the oscilloscope ; Oscilloscope display of a particular clang ; Examples, experiments and questions -- 4. Characteristic frequencies and the decay of composite sounds : A preliminary speculation on the pitch behavior of skillet clangs ; Repetitive properties of an impulsive motion ; Several simultaneous repetition rates ; Experimental search for vibrations having several repetition rates ; Patterns made by adding two different repeating motions ; Composite motions of a skillet ; The characteristic oscillations of a struck object ; The formal description of a decaying sound ; Examples, experiments and questions -- 5. Pitch: the simplest musical implication of characteristic oscillations : Perceived pitch of a composite sound: rectangle bars ; Small clock chimes ; Bells ; Frequency components of the sounds from a plucked or struck string: guitars and pianos ; Sounds having whole-number frequency ratios ; The pitch of chimes and bells: hints of pattern recognition ; Another pitch assignment phenomenon: the effect of suppressing upper or lower partials ; Pitch assignments and frequency patterns: summary and conclusions.6. The modes of oscillation of simple and composite systems : Properties of simple oscillators ; A chain of linked oscillators: properties of a single link ; Transverse oscillations of two masses connected by springs ; More than two masses connected by springs ; Characteristic modes of oscillation: a summary -- 7. Introduction to vibration recipes: the plucked string : Combinations of modes: the two-mass chain ; Vibration recipe of a stringlike beaded chain ; The basic recipe of a plucked or struck string -- 8. Broad hammers and plectra, soft hammers and the stiffness of strings : The equivalence of broad plectra to sets of narrow ones ; The effect of hammer width on the recipe for a struck string ; The effect of impact duration on the recipe for a struck string ; The effect of string stiffness on the excitation of strings ; The upper limits of the vibration recipe: a summary -- 9. The vibrations of drumheads and soundboards : Unraveling the mode shapes of a glockenspiel bar ; Mode shapes of a rectangular plate having free edges ; The effect of various boundaries ; Adjustment of frequency relations by variations of thickness ; An example: the kettledrum -- 10. Sinusoidally driven oscillations : Excitation of a pendulum by a repetitive force ; Properties of the initial transient motion ; The influence of variable damping on the steady response ; A flute player's unplanned experiment ; Steady excitation of a system having two characteristic modes of vibration ; A summary of the properties of a sinusoidally driven system ; The transfer response of a tin tray ; Some musical implications.11. Room acoustics I: excitation of the modes and the transmission impulses : Sound pressure: a way of describing the characteristic oscillatory modes of room air ; Excitation of room modes by a simple source ; Detection of room modes by a microphone or by the ear: interchangeability of source and detector ; Measured steady-state response: some apparent problems ; Transient response of rooms to sinusoidal excitation ; Response to impulse excitation I: signal delays and reverberation ; Response to impulsive excitation II: reflections and scattering -- 12. Room acoustics II: the listener and the room : Hearing sustained sounds in a room ; The role of early echoes: the precedence effect ; Localization by the ears of sound sources in a room ; Some examples of the interplay between room and ear -- 13. The loudness of single and combined sounds : Thresholds of hearing and pain for a 1000-hz sinusoid ; The decibel notation and its application to acoustical signals ; Hearing and pain thresholds at various frequencies ; Variations in the perceive loudness of a single-component sound: sones ; Loudness of combined single-component or narrow-band noise signals having identical or different pitches ; The combined loudness of two or more sinusoids: relationships advertised by beats ; A loudness experiment comparing two saxophone tones ; The sound level meter ; Examples, experiments and questions -- 14. The acoustical phenomena governing the musical relationships of pitch : Heterodyne components: their detection and frequency relationships ; Mechanical origins of the heterodyne components ; The musical tone: special properties of sounds having harmonic components ; Pitch matching: the unison and other special intervals -- 15. Successive tones: reverberations, melodic relationships and musical scales : Reverberation times and the audibility of decaying sounds in a room ; The effect of room reverberation and noise on musical pitch relationships ; Introduction to musical scales ; The function of equal temperament for adjustable-pitch instruments ; Basic scale relations in the music of India ; Other reasons for departures from the special intervals of a scale.16. Keyboard temperaments and tuning properties of the organ, harpsichord and piano : "Just" scales: the conventional basis for keyboard tunings ; Tuning procedure for setting equal temperament ; A useful unequal temperament: Andreas Werkmeister ; Some musical implications: key mood and modulation ; Vibration physics of real strings ; Temperaments for stringed keyboard instruments ; Further musical implications and summary -- 17. Sound production in pianos : The soundboard as seen by the strings; the concept of wave impedence ; The proportions of a mid-scale piano string and the necessity for multiple stringing ; The effect of multiple stringing on the sound of the piano ; The action of piano hammers ; Scaling the strings of a piano ; The sound of a piano -- 18. The clavichord and the harpsichord : The clavichord ; The harpsichord -- 19. The voice as a musical instrument : The voice: a source of controllable sound ; The larynx: a self-sustaining oscillatory flow controller ; Sound transmission through the vocal cavities and into the room ; The male voice and the singer's formant ; Formant tuning and the soprano singing voice ; Intermediate voices and the various musical implications -- 20. The brass wind instruments : A model of the brass player's excitation mechanism: the water trumpet ; Multiple-mode cooperations: regimes of oscillation ; Acoustical measurements and playing experiments on simple air columns ; The influence of the mouthpiece on the heights of resonance peaks; some useful playing properties of a trumpet ; Musically useful shapes: the flaring and conical families of brasses ; The selection of valve slides to give a complete scale ; Further properties of the mouthpiece; adjustment techniques ; The internal and external sound spectra of a trumpet ; The problem of clean attack.21. The woodwinds: I : Resonance curves and the characteristic shapes of woodwind vibrational modes: the tone-hole cutoff frequency ; The flow-control and elastic properties of reeds ; Woodwind regimes of oscillation; Worman's results ; Acoustical properties of a set of closed or open tone holes ; The higher registers of woodwinds; the function of register holes and cross-fingerings -- 22. The woodwinds: II : The reed cavity and neck proportions in conical instruments ; Reed cavity acoustics for cylindrical instruments ; Adjustment of natural frequencies by means of small changes of air-column shape ; The radiation of sound from a woodwind; some problems faced by recording engineers ; Characterization of a woodwind by its cutoff frequency ; The flute family of instruments ; The effect of wall material on the playing properties of wind instruments -- 23. The oscillations of a bowed string : The excitation mechanism of a bowed string ; The resonance curves and regimes of oscillation of a bowed string ; The effect of inharmonicity and damping on the setting-up of regimes ; A description of the bowing mechanism; Helmholtz and Raman ; The bridge driving force spectrum -- 24. Instruments of the violin family : The body and the bridge of instruments of the violin family ; High-frequency radiation properties of bowed string instruments ; Characteristic features of the violin, viola and cello; a recent development: the new family of large and small true violins ; The adjustment of violin plates and the required properties of their material ; Musical properties of bowed string instruments -- 25. Half-valved octaves, burrs, multiphones and wolf notes : The playing of half-valved octaves on brass instruments ; Brass-instrument burrs ; Reed woodwind multiphonics ; The wolf note on violin-family instruments.

Subjects: Music;

Available copies: 1 / Total copies: 1

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