The Sound of Feedback, the Idea of Feedback in Sound Seminar 25 January 2020
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This Week's Essential Reading
10 Friday, December 3, 2010 www.thenational.ae The N!tion!l thereview The N!tion!l thereview Friday, December 3, 2010 www.thenational.ae 11 this week’s essential reading ‘From Rising Skirt Lengths to the If ‘mood polarity’ is negative, then markets falter. Horror movies are popular, people buy Collapse of World Powers’ by Michelle drab cars and governments favour protectionist policies. That’s socionomics, so-called } music { Baddeley, Times Higher Education playlist " From Halim El-Dabh to the theremin – a look back into early incarnations of synthesised sound Resonant freq uencies Halim El-Dabh Crossing into the Electric Magnetic Without Fear (2000) The Egyptian composer’s electronic experiments include A new book details the history of the ess, whether that be a composer recordings from the Columbia- writing down notes or a musi- Princeton Electronic Music BBC Radiophonic Workshop and its cian playing them. Few people hear a soaring string quartet and Studios in the 1950s, and boundary-breaking adventures in attribute its power merely to a material made in a Cairo radio maestro’s fleeting moods, or the station 1944, which may be the electronic music, writes Andy Battaglia wood and steel of a violin. But first treated music in history. even fewer of us can hear a work El-Dabh’s curiosity has led him For all the ways they can sound The broadcast in question was an of electronic music and even try along many low-tech paths, too. strange now, it’s hard to imagine experimental spoken-word show to guess at its origins – at its real how alien the earliest electronic called Private Dreams and Public causes and effects. -
Studio Bench: the DIY Nomad and Noise Selector
Studio Bench: the DIY Nomad and Noise Selector Amit Dinesh Patel Submitted in partial fulfilment of the requirements for the degree of Doctor of Philosophy August 2019 Abstract This thesis asks questions about developing a holistic practice that could be termed ‘Studio Bench’ from what have been previously seen as three separate activities: DIY electronic instrument making, sound studio practice, and live electronics. These activities also take place in three very specific spaces. Firstly, the workshop with its workbench provides a way of making and exploring sound(- making) objects, and this workbench is considered more transient and expedient in relation to finding sounds, and the term DIY Nomad is used to describe this new practitioner. Secondly, the recording studio provides a way to carefully analyse sound(-making) objects that have been self-built and record music to play back in different contexts. Finally, live practice is used to bridge the gap between the workbench and studio, by offering another place for making and an opportunity to observe and listen to the sound(-making) object in another environment in front of a live audience. The DIY Nomad’s transient nature allows for free movement between these three spaces, finding sounds and making in a holistic fashion. Spaces are subverted. Instruments are built in the studio and recordings made on the workbench. From the nomadity of the musician, sounds are found and made quickly and intuitively, and it is through this recontextualisation that the DIY Nomad embraces appropriation, remixing, hacking and expediency. The DIY Nomad also appropriates cultures and the research is shaped through DJ practice - remixing and record selecting - noise music, and improvisation. -
The Microphone Feedback Analogy for Chatter in Machining
Hindawi Publishing Corporation Shock and Vibration Volume 2015, Article ID 976819, 5 pages http://dx.doi.org/10.1155/2015/976819 Research Article The Microphone Feedback Analogy for Chatter in Machining Tony Schmitz UniversityofNorthCarolinaatCharlotte,Charlotte,NC28223,USA Correspondence should be addressed to Tony Schmitz; [email protected] Received 16 March 2015; Accepted 13 May 2015 Academic Editor: Georges Kouroussis Copyright © 2015 Tony Schmitz. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. This paper provides experimental evidence for the analogy between the time-delay feedback in public address systems and chatter in machining. Machining stability theory derived using the Nyquist criterion is applied to predict the squeal frequency in a microphone/speaker setup. Comparisons between predictions and measurements are presented. 1. Introduction with the workpiece surface causes the tool to begin vibrating and the oscillations in the normal direction to be copied Self-excited vibration, or regenerative chatter, in machining onto the workpiece [4]. When the workpiece begins its has been studied for many years. The research topic has second revolution, the vibrating tool encounters the wavy encouraged the application of mathematics, dynamics (linear surfaceproducedduringthefirstrevolution.Subsequently, and nonlinear), controls, heat transfer, tribology, and other -
Recording and Amplifying of the Accordion in Practice of Other Accordion Players, and Two Recordings: D
CA1004 Degree Project, Master, Classical Music, 30 credits 2019 Degree of Master in Music Department of Classical music Supervisor: Erik Lanninger Examiner: Jan-Olof Gullö Milan Řehák Recording and amplifying of the accordion What is the best way to capture the sound of the acoustic accordion? SOUNDING PART.zip - Sounding part of the thesis: D. Scarlatti - Sonata D minor K 141, V. Trojan - The Collapsed Cathedral SOUND SAMPLES.zip – Sound samples Declaration I declare that this thesis has been solely the result of my own work. Milan Řehák 2 Abstract In this thesis I discuss, analyse and intend to answer the question: What is the best way to capture the sound of the acoustic accordion? It was my desire to explore this theme that led me to this research, and I believe that this question is important to many other accordionists as well. From the very beginning, I wanted the thesis to be not only an academic material but also that it can be used as an instruction manual, which could serve accordionists and others who are interested in this subject, to delve deeper into it, understand it and hopefully get answers to their questions about this subject. The thesis contains five main chapters: Amplifying of the accordion at live events, Processing of the accordion sound, Recording of the accordion in a studio - the specifics of recording of the accordion, Specific recording solutions and Examples of recording and amplifying of the accordion in practice of other accordion players, and two recordings: D. Scarlatti - Sonata D minor K 141, V. Trojan - The Collasped Cathedral. -
Distortion Improvement in the Current Coil of Loudspeakers Gaël Pillonnet, Eric Sturtzer, Timothé Rossignol, Pascal Tournier, Guy Lemarquand
Distortion improvement in the current coil of loudspeakers Gaël Pillonnet, Eric Sturtzer, Timothé Rossignol, Pascal Tournier, Guy Lemarquand To cite this version: Gaël Pillonnet, Eric Sturtzer, Timothé Rossignol, Pascal Tournier, Guy Lemarquand. Distortion improvement in the current coil of loudspeakers. Audio Engineering Society Convention, May 2013, Roma, Italy. hal-01103598 HAL Id: hal-01103598 https://hal.archives-ouvertes.fr/hal-01103598 Submitted on 15 Jan 2015 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. AES Audio Engineering Society Convention Paper Presented at the 134th Convention 2013 May 4–7 Rome, Italy This Convention paper was selected based on a submitted abstract and 750-word precis that have been peer reviewed by at least two qualified anonymous reviewers. The complete manuscript was not peer reviewed. This convention paper has been reproduced from the author's advance manuscript without editing, corrections, or consideration by the Review Board. The AES takes no responsibility for the contents. Additional papers may be obtained by sending request and remittance to Audio Engineering Society, 60 East 42nd Street, New York, New York 10165-2520, USA; also see www.aes.org. All rights reserved. -
Electronic Pipe Organ Using Audio Feedback
Electronic Pipe Organ using Audio Feedback Seunghun Kim and Woon Seung Yeo Audio & Interactive Media Lab Graduate School of Culture Technology, KAIST Daejeon, 305-701, Korea [email protected], [email protected] ABSTRACT 2. RELATED WORK The organ is a musical instrument with a long history. Based This paper presents a new electronic pipe organ based on on its sound-producing mechanism, organs can be catego- positive audio feedback. Unlike typical resonance of a tube rized into several groups such as pipe, reed, electronic, and of air, we use audio feedback introduced by an amplifier, a digital organs. Virtually none of these, however, utilizes lowpass filter, as well as a loudspeaker and a microphone the idea of acoustic feedback we propose. in a closed pipe to generate resonant sounds without any Examples of acoustic feedback used for musical instru- physical air blows. Timbre of this sound can be manip- ments include the hybrid Virtual/Physical Feedback Instru- ulated by controlling the parameters of the filter and the ments (VPFI) [2], in which a physical instrument (e.g., a amplifier. We introduce the design concept of this audio pipe) and virtual components (e.g., audio DSP processors feedback-based wind instrument, and present a prototype such as a lowpass filter) constitute a feedback cycle. The that can be played by a MIDI keyboard. Audible EcoSystemics n.2 is a live electronic music based only on Larsen tones (i.e., sound generated by audio feed- back) [3]. In [4], Overholt et al. documents the role of feedback in 1. INTRODUCTION actuated musical instruments. -
Sound American | SA Issue 6: Five Questions with Nicolas Collins
SOUND AMERICAN ABOUT THIS ISSUE JULIUS EASTMAN'S PRELUDE TO JOAN D'ARC + TOM JOHNSON'S RATIONAL MELODIES + GÉRARD GRISEY'S PROLOGUE TO LES ESPACE ACOUSTIQUE + ANTOINE BEUGER'S KEINE FERNEN MEHR + STEVE LACY'S DUCKS + FOUR SAXOPHONES ON BODY AND SOUL FIVE QUESTIONS: KURT GOTTSCHALK ABOUT OUR CONTRIBUTORS STORE SUBSCRIBE TO DRAM ARCHIVE OF PAST ISSUES + SA Issue 6: Five Questions with Nicolas Collins FIVE QUESTIONS WITH NICOLAS COLLINS Nic Collins: Photo by Viola Rusche New York born and raised, Nicolas Collins studied composition with Alvin Lucier at Wesleyan University, worked for many years with David Tudor, and has collaborated with numerous soloists and ensembles around the world. He lived most of the 1990s in Europe, where he was Visiting Artistic Director of Stichting STEIM (Amsterdam), and a DAAD composer-in-residence in Berlin. Since 1997 he has been editor-in-chief of the Leonardo Music Journal, and since 1999 a Professor in the Department of Sound at the School of the Art Institute of Chicago. His book, Handmade Electronic Music – The Art of Hardware Hacking (Routledge), has influenced emerging electronic music worldwide. Collins has the dubious distinction of having played at both CBGB and the Concertgebouw. Visit Nic at: www.nicolascollins.com ***** Five Questions with... is a feature of Sound American where I bother a very busy person until they answer a handful of queries around the issue's topic. This issue features composer, educator, and writer Nicolas Collins. Collins is best known for his ability to find music in the inner workings of everyday electronic objects. CD players become laser turntables, laptop motors create instant electronic music, and the laying of hands on circuits control unholy manipulations of children's toys. -
LM4651 & LM4652 Overture™ Audio Power Amplifier 170W Class D
LM4651 & LM4652 Overture August 2000 LM4651 & LM4652 Overture™ Audio Power Amplifier 170W Class D Audio Power Amplifier Solution General Description Key Specifications The IC combination of the LM4651 driver and the LM4652 n Output power into 4Ω with < 10% THD. 170W (Typ) power MOSFET provides a high efficiency, Class D sub- n THD at 10W, 4Ω, 10 − 500Hz. < 0.3% THD (Typ) woofer amplifier solution. n Maximum efficiency at 125W 85% (Typ) The LM4651 is a fully integrated conventional pulse width n Standby attenuation. >100dB (Min) modulator driver IC. The IC contains short circuit, under voltage, over modulation, and thermal shut down protection Features circuitry. It contains a standby function, which shuts down n Conventional pulse width modulation. ™ the pulse width modulation and minimizes supply current. The LM4652 is a fully integrated H-bridge power MOSFET n Externally controllable switching frequency. IC in a TO-220 power package. Together, these two IC’s n 50kHZ to 200kHz switching frequency range. 170W Class D Audio Power Amplifier Solution form a simple, compact high power audio amplifier solution n Integrated error amp and feedback amp. complete with protection normally seen only in Class AB n Turn−on soft start and under voltage lockout. amplifiers. Few external components and minimal traces n Over modulation protection (soft clipping). between the IC’s keep the PCB area small and aids in EMI n Short circuit current limiting and thermal shutdown control. protection. The near rail-to-rail switching amplifier substantially in- n 15 Lead TO−220 isolated package. creases the efficiency compared to Class AB amplifiers. -
Copyright by Yago Parra Moutinho Stucky De Quay 2016
Copyright by Yago Parra Moutinho Stucky de Quay 2016 The Dissertation Committee for Yago Parra Moutinho Stucky de Quay Certifies that this is the approved version of the following dissertation: The Development and Experience of Gesture and Brainwave Interaction in Audiovisual Performances Committee: Sharon Strover, Supervisor Bruce Pennycook, Co-Supervisor Shanti Kumar Russell Pinkston Yacov Sharir Rui Penha António Coelho The Development and Experience of Gesture and Brainwave Interaction in Audiovisual Performances by Yago Parra Moutinho Stucky de Quay, B.Music.; M.Multimedia Dissertation Presented to the Faculty of the Graduate School of The University of Texas at Austin in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy The University of Texas at Austin December 2016 Dedication To my parents, Isabel and José Acknowledgements I want to thank Bruce Pennycook, Yacov Sharir, and Sharon Strover for their significant intellectual and artistic contributions to this work. I also want to thank A. R. Rahman for inviting me to join his fantastic project with Intel, and Lakshman Krishnamurthy for his inspiring leadership in that project. Finally, I am grateful to have had Reema Bounajem supporting me emotionally throughout the writing process. v The Development and Experience of Gesture and Brainwave Interaction in Audiovisual Performances Yago Parra Moutinho Stucky de Quay, PhD The University of Texas at Austin, 2016 Supervisor: Sharon Strover Co-Supervisor: Bruce Pennycook Software and hardware developments in the 21st century have greatly expanded the realm of possibilities for interactive media. These developments have fueled an increased interest in using unconventional methods to translate a performer’s intentions to music and visuals. -
2009 Daphne Oram's Optical Synthesizer
Graham Wrench: The Story Of Daphne Oram’s Optical Synthesizer http://www.soundonsound.com/sos/feb09/articles/oramics.htm by Steve Marshall To celebrate the 50th anniversary of the BBC Radiophonic Workshop in April 2008, I wrote about its history for Sound On Sound (you can read the article on-line at www.soundonsound.com/sos/apr08/articles/radiophonic.htm). I’ve always felt that Daphne Oram’s importance has been underestimated, both as a co- founder of the Workshop and as an electronic composer, so I tried to redress this by including as much as I could about her graphically controlled Oramic synthesiser. This was not easy, as Daphne died in 2003 and I was unable to find anyone who’d even seen the Oramic System, let alone knew how it worked. I did my best, but shortly after the magazine went on sale, an email was forwarded to me by Sound On Sound. “I enjoyed the article very much,” said the writer. “With reference to the bizarre design concept of the original Oramics machine, you might be interested in some background as to why and how it took shape! I was the engineer who originally turned Daphne’s concept into a reality, with an extremely tight budget and a lot of inverted, lateral thinking.” It was signed: “Yours respectfully, Graham Wrench.” I had to meet this man! So off I went to rural Suffolk, where Graham lives in a little house crammed with engineering wonders. There are musical instruments, home-made telescopes, model railways, vintage photographic gear There’s even a steam railway museum just down the road! Despite these temptations, I managed to spend a whole afternoon listening to Graham’s account of how Oramics really worked, and how he came to design and build the prototype. -
The Mincer by John Richards
22 00 00 88 -- online since 1993 ISSN NO : 1071 - 4391 The MIT Press Home > Journal > Essays > LEA-LMJ Special QUICK LINKS : Please select... vv oo l l 11 55 SEARCH LEA ii ss ss uu ee LEA E-JOURNAL GO TABLE OF CONTENTS LL oo ss t t aa nn dd FF oo uu nn dd : : t t hh ee MM i i nn cc ee r r 11 Advanced Search INTRODUCTION EDITOR'S NOTE LL oo ss t t aa nn dd FF oo uu nn dd : : t t hh ee MM i i nn cc ee r r Click here to download pdf version. GUEST EDITORIAL ESSAYS John Richards ANNOUNCEMENTS Music, Technology and Innovation Research :: GALLERY CentreSchool of Music :: RESOURCES De Montfort University, Leicester LE1 9BH, UK :: ARCHIVE U.K. :: ABOUT jrich [at] dmu [dot] ac [dot] uk :: CALL FOR PAPERS http://www.jsrichards.com KK ee yy ww oo r r dd s s Found art, live electronics, musical interface, DIY, bricolage, appropriation, gesture, feedback AA bb s s t t r r a a c c t t This paper discusses the author’s Mincer: an ‘evolved’ sound generating object of which the mechanical properties and physical material of a meat mincer (grinder) are exploited. Through looking at the Mincer in detail, the author suggests a number of characteristics of the device that reflect current trends within the field of live electronics. This includes working with and appropriating found objects, do-it-yourself (DIY) electronics, bricolage, an emphasis on physical gesture, and sound generating systems celebrating super-hybridity. -
2009 from the Daphne Oram Collection
http://daphneoram.org/collection/ Daphne Oram From the Daphne Oram Collection Because of WWII, the role of women in society changed dramatically in the years following. Women had proved themselves more than capable technicians, producers and broadcasters during men’s absence with the war effort. Daphne recalled, “In 1942 it was arranged for met to go to Royal College of Music – but because of War time regulations, I would have to agree to be a music teacher after leaving RCM – I didn’t want to be a ‘school ma’am’! My Father entered me for Electro-Therapist at King’s College Hospital (Denmark Hill). I passed the exams, the uniform was ordered but I went against my Father because there was practically no music. Eventually I won my Father round and I went to the BBC instead.” Daphne Oram was employed at the BBC as a Junior Studio engineer and music balancer. She notes “As a Junior Programme Engineer, one of my jobs was to play the 78rpm gramophone records. With the help of a full score I had to change over from record to record, perfectly in time, so that a symphony, say on ten discs, was continuous. My other duties at the time , 1943-1944, was to assist my more senior colleagues with music balancing in the studios. I joined the BBC in October 1943. In November and December, while I was still 17, I assisted recitals by Eileen Joyce, Leon Gooseus, Isobel Baillie; and early in 1944, the London Philharmonic Orchestra...” In June 1944 Daphne also was working on the Proms in the Royal Albert Hall, on standby with gramophone records synced up to the live music that could take over in case of a bombing raid.