Arras

Barry Truax – Arras (1980) – for four computer-synthesized soundtrackstruax

Author’s notes:

Arras refers metaphorically to the heavy wall hanging or tapestry originally produced in the French town of the same name. The threads running through the material form both a background and, when coloured, a foreground pattern as well, even when they are the same thread. In the piece there is a constant ambiguity between whether a component sound is heard as part of the background texture, or whether it is heard as a foreground event because, in fact, the frequencies are the same. The listener can easily be drawn into the internal complexity of the constantly shifting pattern, but at the same time can sense the overall flow of the entire structure.

Arras is a continuously evolving texture based on a fusion of harmonic and inharmonic spectra. The large-scale structure of the piece follows a pattern of harmonic change going from closely spaced odd harmonics through to widely spaced harmonics towards the end. Each harmonic timbre is paired with an inharmonic one with which it shares specific harmonics, and with which it overlaps after each twenty-five second interval. This harmonic/inharmonic structure forms a background against which specific events are poised: shorter events, specific high pitches which otherwise would be imbedded in the overall timbre, and some percussive events. However, all frequencies found in the foreground events are the same as those in the background texture; hence the constant ambiguity between them.

Arras received an honourable mention in the computer music category of the 1980 International Competition of Electroacoustic Music sponsored by the G.M.E.B. in Bourges, France.

Arras is available on the Cambridge Street Records CD Pacific Rim, and the RCI Anthology of Canadian Electroacoustic Music.

More technical notes here.
Listen to Arras excerpt.

Androgyny

Barry Truax – Androgyny (1978) – a spatial environment with four computer-synthesized soundtracks

Author’s notes:

Androgyny explores the theme of its title in the abstract world of pure sound. The piece, however, is not programmatic; instead, the dramatic form of the piece has been derived from the nature of the sound material itself. In this case, the sound construction is based on ideas about an acoustic polarity, namely “harmonic” and “inharmonic,” or alternatively, “consonance” and “dissonance.” These concepts are not opposed, but instead, are related in ways that show that a continuum exists between them, such as in the middle of the piece when harmonic timbres slowly “pull apart” and become increasingly dissonant at the peak intensity of the work. At that point a deep harmonic 60 Hz drone enters, similar to the opening section, but now reinforced an octave lower, and leads the piece through to a peaceful conclusion. High above the drone are heard inharmonic bell-like timbres which are tuned to the same fundamental pitch as the harmonic drone, a technique used throughout the work with deeper bells.

The work is designed to sound different spatially when heard on headphones. Through the use of small binaural time delays, instead of intensity differences, the sounds are localized outside the head when heard through headphones. Various spatial movements can also be detected, such as the circular movement of the drones in the last section of the piece.

Although not intended to be programmatic, the work still has environmental images associated with it, namely those suggested by the I Ching hexagram number 62, Preponderance of the Small, with a changing line to number 31, Wooing. The reading describes a mountain, a masculine image, hollowed out at the top to enclose a lake, a feminine image. The two exist as a unity. Thunder is heard close by, clouds race past without giving rain, and a bird soars high but returns to earth.

Androgyny is available on the Melbourne album Androgyne and the Cambridge Street Records CD, SFU 40.

Production Note:

The work was realized with the composer’s POD6 and POD7 programs for computer sound synthesis and composition at Simon Fraser University. All the component sounds are examples of frequency modulation (FM) synthesis, generated in binaural stereo, with time differences between channels. However, considerable analog mixing in the Sonic Research Studio at Simon Fraser University produced the resulting complex work.

Listen to Androgyny

Phantom Terrains

Streams of wireless data surge from internet exchanges and cellphone relays, flowing from routers to our devices and back again. This saturation of data has become a ubiquitous part of modern life, yet it is completely invisible to us. What would it mean to develop an additional sense which makes us continuously attuned to the invisible data topographies that pervade the city streets?

Phantom Terrains is an experimental platform which aims to answer this question by translating the characteristics of wireless networks into sound. By streaming this signal to a pair of hearing aids, the listener is able to hear the changing landscapes of data that surround them. Network identifiers, data rates and encryption modes are translated into sonic parameters, with familiar networks becoming recognizable by their auditory representations.

The project challenges the notion of assistive hearing technology as a prosthetic, re-imagining it as an enhancement that can surpass the ability of normal human hearing. By using an audio interface to communicate data feeds rather than a visual one, Phantom Terrains explores hearing as a platform for augmented reality that can immerse us in continuous, dynamic streams of data.

Below the map is an audio recording of part of the same walk, as heard through the Phantom Terrains sonification interface. The sound of each network is heard originating from the router’s geographical location, producing clicks whose frequency rises with the signal strength — akin to a layered series of Geiger counters. Routers with particularly strong signals “sing” their network name (SSID), with pitch corresponding to the broadcast channel, and a lower sound denoting the network’s security mode.

Autotune 4’33”

C’è anche questa versione di Matthew Reid che è abbastanza interessante. Reid ha eseguito il brano filtrando il microfono con un equalizzatore regolato in modo da rinforzare le frequenze di risonanza della stanza. Di conseguenza si è prodotto un feedback.

La registrazione è stata poi passata in Autotune che ha intonato tutti i feedback, sia il bordone del secondo movimento che i vari suoni del terzo. In un certo senso è una versione elettroacustica del brano.

BEASTmulch

super-collider

BEASTmulch is an AHRC (Arts & Humanities Research Council) funded research project exploring approaches to large-scale multichannel electroacoustic composition and presentation, lead by Scott Wilson along with Jonty Harrison and Sergio Luque at the University of Birmingham.

BEASTmulch System is a software tool for the presentation of electroacoustic music over multichannel systems. Designed primarily with a classic ‘live diffusion’ model in mind, it is nevertheless flexible enough to be adapted for a number of purposes, and can support input and output configurations of arbitrary complexity (i.e. live inputs, soundfiles with varying numbers of channels, etc.).

The software has numerous features (e.g. realtime reconfigurable routing, channel processing, automation, etc.), incorporates various standard and non-standard spatialisation techniques (VBAP, ambisonics, etc.), and adapts easily to both small and large (i.e. > 100 loudspeakers) systems.

BEASTmulch System is the software component of the BEAST concert system.

System Requirements: Mac OSX 10.4 – 10.5 (10.6 compatibility forthcoming).

BEASTmulchLib is a SuperCollider class library designed for use in the creation, processing and presentation of complex multichannel signal chains. Objects include sources, matrix routers and mixers, and sound processors and spatialisers. The latter are based on a simple user-extensible plugin architecture. Many classes have elegant GUI representations.

The library also includes classes which represent a variety of different controllers, including MIDI controllers, GUI Faders, EtherSense, etc., and provides support for controller automation (i.e automated mixing and diffusion).

It supports a number of common spatialisation techniques, such as Ambisonics, and includes SC ports of Ville Pullki’s Vector Base Amplitude Panning (VBAP), and the Loris analysis resynthesis method. It also supports some idiosyncratic techniques, such as Spatial Swarm Granulation, and provides utility classes for Speaker Array balancing and visualisation.

Currently the library is not fully cross-platform: GUI classes and UGens are OSX only.

Site is here.

Trans und so weiter

Questo film, è stato girato nel 1973 da Gérard Patris per la Zweite Deutsche Fernsehen (Seconda Televisione Tedesca) nel corso delle prove e delle esecuzioni di alcune opere di Stockhausen per i Recontres Internationales de Musique Contemporaine di Metz.

Si possono vedere estratti di Trans, Mikrophonie I, Zyklus, Refrain, Kontakte, Am Himmel Wandre Ich, Ceylon con la partecipazione e la direzione dall’autore.

Il film è in tedesco, comunque le parti musicali costituiscono la maggior parte del film e sono interessanti anche per chi non capisce la lingua.

The Berlin Wall of Sound

SoundCloud ha pubblicato un post commemorativo per il 25mo della caduta del muro di Berlino.

Dal punto di vista musicale non è particolarmente significativo (è un collage di suoni e citazioni), ma probabilmente non era questo lo scopo. Il post, invece ha alcuni elementi interessanti sotto il profilo formale. Innanzitutto la durata: 7 minuti e 32 secondi è il tempo impiegato dal suono per percorrere i 155 km della lunghezza del muro. Poi i commenti, che sono 107, ciascuno con il nome di una persona morta nel tentativo di oltrepassare il muro (dovrebbero essere 120, forse qualcuno è collettivo).

 Marking the 25th anniversary of the fall of the Berlin Wall.

The Berlin Wall of Sound is an acoustic reconstruction of the Berlin Wall.

Its duration of 7:32 minutes reflects the time sound needs to travel the 155 kilometres length of the Berlin Wall. Its sound wave’s shape mirrors the wall of concrete and its watchtowers. There are no comments – the tags depict the victims and mark where they were killed.

The Wall of Sound is not easy to bear. But 27 years locked behind the concrete Berlin Wall were unbearable.

Back in 1989, SoundCloud’s headquarters would have been part of the Death Zone next to the Berlin Wall. We dedicate the Wall of Sound to the 120 women, men and children, who lost their lives in their attempt to live in freedom. We will not forget.

Major original quotes used:

Walter Ulbricht (former leader of the GDR and responsible for the construction) saying a few days before the construction started: „Nobody has the intention to raise a wall“

Heinz Hoffmann (former GDR secretary of defense): „To those, who don’t respect our border – they will feel the bullet.“

Erich Honecker (longtime and most powerful leader of the GDR) celebrating 40 Years of the GDR in 1989: „The German Democratic Republic will exist another 40 years and beyond.“

Alla fine, comunque, devo dire che, se da un lato un muro che cade fa sempre piacere, non concordo con la retorica semplicistica che circonda queste commemorazioni, secondo la quale noi abbiamo la libertà mentre loro erano un regime oppressivo.

La pagina originale è qui.

Requiem elettroacustico

chion requiemIl Requiem elettroacustico di Michel Chion è del 1973 (non 1993 come riporta erroneamente il video su You Tube qui sotto).

Quando l’ho ascoltato (sarà stato il 1977/78), mi ha fatto una notevole impressione. È un lavoro che ridefinisce completamente i canoni della musica concreta francese. Li supera con l’uso massiccio di sonorità puramente elettroniche a cui sono accostati suoni naturali, loop concreti e frammenti musicali, spesso trattati elettronicamente in modo evidente, ma soprattutto voci recitanti con modalità fra loro diverse: intense, sussurrate, urlanti, lontane, in coro, fino a una voce di bambino che legge, con qualche esitazione, una parte del testo.

È un’opera drammatica e intensa, emozionale, che va molto al di là del puro esercizio compositivo.

Note dell’autore:

The Form of this music was not meant as an excuse to deploy refined geometry over a time frame seen as space. And if Requiem as a whole is built on a system of echoes and correspondences that seem to be symmetrically organized (see graphism) around an axis represented by the work’s middle point, it is not my fault. The form was developed in the course of the process, as a dramatic scheme that played off the listener’s memory and premonitions, since once the listener has heard the work more than once, they can predict as well as recall. The musical analysis I came to perform, and of which I am disclosing a few pieces here, I did long after composing the work and for my own enjoyment. It should be understood as a game, not as the Key of Dreams, and it is surely not essential.

Echoes and correspondences of what ? Themes, musical motives, ranging from the most elemental (a loop, raw matter) to the most elaborated (a musical development), and which are reprised, quoted or announced at various moments of the work – some are easily identifiable as “leitmotivs” (theme-chorus from the Dies Irae quoted in the finale), while others are accompanying motives, matter that does not need to be memorized at a conscious level. An extreme case of such echo effect is found in the short movements 2 & 9, which use almost the same “music” cast under completely opposite sound lighting.

The centre of the work, the axis of that symmetry, is the 6th movement (Evangile), where happens a symbolical tear in the magnetic tape, a crack in the work itself, opening in the timeline a breach of eternity that lets us glimpse “something else.” This figure illustrates that breach as a sawtooh line, while the vertical line illustrates the pasted point, the moment (at the beginning of Sanctus) when the mass itself, like a broken reel of film at the cinema show, resumes. Within this large form in two parts, we find the small forms of each movement: forms with choruses and episodes, litanies, recitativo, levelled crescendos, etc. There is also another formal course delineated by the succession of several vocal characters, their timbre, intonation, and relation to the libretto. Without giving more details, it is worth mentioning that the only time a well-assured, peremptory voice is clearly heard is, once again, at that central moment in Evangile (“il va ressusciter” or “he will rise”), where its irruption seems to spread panic throughout the whole system and provoke the breach…

Like the great requiems of the classical era, this Requiem’s text is taken from the Funeral Mass, to which are added an Epistle, a Gospel and a Pater Noster. The texts are mostly said in their original language (Latin or Greek) and in French, in some rare cases.

The Requiem was composed whilst thinking about the troubled minority of the living, rather than the silent majority of the dead. Also, I tried to turn this oratorio into a “great sonic show,” cinemascope music. One can detect the obvious (at least to me) influence of a few filmmakers and films, more in the way of playing with forms, time and space, than through realistic evocations. Thomas Mann’s Docteur Faustus was another influence, again acknowledged after the fact; the pages spent describing the imaginary works of Adrian Leverkühn might have inspired the megalomaniac dream of carrying bits and pieces of them into the sound world. With Requiem, my intention was not to deliver a message or a manifesto, whether pro- or anti-religious. Instead, this work is a personal testimony, into which listeners are invited to project their own self, if they care to inhabit it with their own experience and sensibility.

Too late, too far

sam salemSam Salem (n. 1982) è un compositore di Manchester che lavora principalmente in area acusmatica e audio/video.

È principalmente interessato ai suoni degli ambienti urbani. Molte delle sue composizioni si focalizzano sui suoni di luoghi specifici, ciò nonostante la sua musica non ha niente a che fare con l’ambient. Invece Salem esplora l’ambiente sonoro cercando di rivelare la musicalità nascosta nei suoni ambientali. In questo senso i suoi lavori vanno al di là del semplice paesaggio sonoro.

Quello che ascoltiamo qui, Too late, too far è del 2014. Note dell’autore:

Too late, too far is part of a larger work entitled The Fall, composed between 2012 and 2014. The compositional process began during a residency at STEIM in December 2011: Amsterdam was the source from which I collected the materials for this piece.

I think now of the unwitting owners of actions contained herein: the cyclists and joggers of Vondelpark, the man on a bridge who offered a bike for a cigarette, the swans calling across the Red Light District, the choir of Sint-Nicolassbasiliek, and the countless others, long since dispersed but not forgotten: shouting, singing, laughing, swearing, clapping. I think also of the creaks and rhythms of rocking boats, of passing trams, the ubiquitous bells and horns, the rain, wind and lapping water, and the 5am fireworks on New Year’s Day. I consider these materials as fragments of sound, but also, now, as fragments of time. Sometimes their shimmering light is obscured, sometimes it is revealed.

This work, “peopled by bad dreams” (and the occasional good one), balances somewhere between loss and hope: after more than two years of work, this is its final character.

 

Il canto della cometa

Ok. Dimenticate il titolo aulico. Quello di cui parliamo è un fenomeno scientifico che comunque ha anche dei risvolti audio e ci offre  l’occasione di parlare di una delle più affascinanti missioni spaziali degli ultimi anni.

Rosetta è una missione spaziale sviluppata dall’Agenzia Spaziale Europea e lanciata nel 2004. L’obiettivo ultimo della missione è lo studio della cometa 67P/Churyumov-Gerasimenko, una cometa periodica che ritorna ogni 6.45 anni terrestri.

La missione è formata da due elementi: la sonda vera e propria Rosetta e il lander Philae. Quest’ultimo è destinato a staccarsi dalla sonda e atterrare sul nucleo della cometa, di cui la sonda ha già inviato splendide foto. Il distacco è avvenuto proprio oggi 12/11 e il lander sta scendendo verso il nucleo (incrociamo le dita).

La parte audio della faccenda è questa. Ovviamente la sonda trasporta molti strumenti per studiare da vicino la cometa. Cinque di questi costituiscono il cosiddetto Rosetta’s Plasma Consortium (RPC) e servono a studiare l’ambiente di plasma che circonda la cometa (il plasma è uno stato della materia che appare come un gas elettricamente conduttivo che circonda i campi magnetici e le correnti elettriche).

Già in Agosto, l’RPC ha scoperto che il campo magnetico della cometa ha una oscillazione con frequenza intorno ai 40-50 millihertz. Ora, qualsiasi oscillazione più o meno periodica può essere trasformata in suono. In questo caso il problema è che la frequenza è troppo bassa per essere udibile. Le frequenze più basse che siamo in grado di percepire stanno intorno a 20 Hz, mentre qui abbiamo a che fare con 0.05 Hz.

Il problema si può risolvere trasponendo (ovvero accelerando) il tutto di circa 10000 volte. Così 0.05 Hz diventano 500 Hz che sono perfettamente ascoltabili e il suono che ne esce è questo:

Ecco un’immagine del nucleo della cometa (il piccolo 747 che vedete al centro non è alieno; è lì per confronto; clicca per ingrandire)

nucleo cometaUna nota finale. Prima di delirare con toni mistici intorno al canto della cometa, rendetevi conto che qualsiasi fenomeno periodico può essere convertito in suono. Per esempio, la rotazione terrestre è periodica. Il giorno solare medio dura circa 24 ore, cioè 86400 secondi. Di conseguenza. dato che la frequenza è l’inverso del periodo, esso ha una frequenza di 0.000011574 Hz, troppo bassa per sentirla, ma basta trasporla di 24 ottave per avere circa 194.18 Hz, che corrispondono a una nota perfettamente udibile: un Sol appena calante (con La = 440 Hz).