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Timbral Map

Planning of Movement 1 continues by trying to map the hill timbrally. I have devised the table below, showing how the various winds are translated into timbres for clarinet and the loudspeaker orchestra. Some of the latter sounds are electronic, some natural recordings, some instrumental samples. Pretty soon now the real work of actually making the sounds will begin!

bassclarinet

Wind: N
Pitch: A
Character: compressing – stretching
Time delimited? yes
Phrase 1: Compressing: discontinuous and erratic.
Phrase 2: Stretching out: globally uniform
Semantics: First there is a feeling of compression (as if we strongly pressed on an obstacle) then the barrier is suddenly overcome, suppressing all resistance and releasing the power. It is a sudden change from localized energy to scattered energy.
Timbres: Aeolian sounds, wind and brass instruments, plus electronic compression
Bass Clarinet: rapid staccatissimo, then tenuto

Wind: NE
Pitch: E
Character: moving forward, propulsion
Time delimited? yes
Phrase 1: first phase is quite a sustained fulcrum: a prolonged or homogeneous sound or slow iteration, globally uniform
Phrase 2: a brief acceleration of intensity, pitch, or any other morphological trait
Phrase 3: a typical resonance or silence
Semantics: We feel the application of a force to a steady state, resulting in an accelerated movement. Projection from a starting point.
Timbres: bowed tam-tam, bowed gamelan, bowed vibes, piano clusters, drone sound, resonance is spatial
Bass Clarinet: sustain – acceleration – resonance

Wind: E
Pitch: B
Character: waves, braking
Time delimited? no
Phrase 1: slow repetition of an increasing then decreasing sound motif. The shape of the profile can concern different morphological criteria (mass, dynamics, grain, etc.)
Semantics: Each cycle conveys the feeling of being pushed forward, and then driven back until the end. We get the impression that we are stagnating through this unit although we feel motion within each cycle.
Timbres: wind in trees, granular synthesis, additive/subtractive synthesis, filtering
Bass Clarinet: rhythmic articulations, vibrato

Wind: SE
Pitch: F
Character: divergent, chaotic
Time delimited? no
Phrases: ad lib.
Semantics: No description required. The title is self-explanatory.
Timbres: birdsong, natural rustling, strings
Bass Clarinet: multiphonics, microtones, extended techniques, slap tongue

Wind: S
Pitch: C
Character: endless trajectory, heaviness, in suspension
Time delimited? no
Phrase 1: a linear and usually slow evolution of a sound parameter
Semantics: The process must be oriented in a direction (for example, upwards or downwards) and however, it seems to never finish. The sound phenomenon must be long enough to be perceived as a process and not an ephemeral event.
Timbres: spectral processing, time stretching, Shepard tone, distant aeroplane
Bass Clarinet: circular breathing, glissando, crescendo

Wind: SW
Pitch: G
Character: spinning, stationary, obsessive
Time delimited? no
Phrase 1: a parameter (pitch, timbre) is driven by a quick cyclic repetition along with a thrust in each cycle, or with a quick and possibly varied repetition of a pulsed element.
Semantics: We feel constrained by a mechanical process in which we cannot seem to act. We have the feeling of an object spinning on itself or in space.
Timbres: mechanical sounds, throbbing, music box, piano
Bass Clarinet: Double/triple tonguing

Wind: W
Pitch: D
Character: floating, falling, fading away
Time delimited? no
Phrase 1: a sound parameter (pitch, dynamic, etc) floats and then falls away.
Semantics: We feel sustained for a considerable period of time before drifting away, either falling or fading.
Timbres: decay instruments (prepared piano, harp, celesta, vibraphone, gong, etc.) that decay at wrong or unusual rates, or have pitch shift
Bass Clarinet: glissandi, decrescendi

Wind: NW
Pitch: always unpitched
Character: suspending-questioning, wanting to start
Time delimited? no
Phrase 1: ad lib.
Phrase 2: ad lib.
Phrase 3: ad lib.
Semantics: no description necessary
Timbres: unpitched percussion, acoustic effects, wind sounds
Bass Clarinet: Breath sounds, key clicks, etc.

 

An invitation to contribute to the Kelston Roundhill Symphony!

Movement 4 of the Kelston Roundhill Symphony is to be called “People and Buildings”. People can upload sounds to a website, like some kind of aural patchwork quilt. Any sounds may be used, but obviously it would be good to link them to themes of the symphony and the round hill. I will then put together a piece using these sounds, to create what will hopefully be a vigorous and rousing end to the symphony. During the composition process, people can comment and make suggestions via the message board on the site.

If you wish to take part, please do make a contribution here http://andrewhugill.com/kelston-four/

The Old Barn

Here are some pictures of the venue for the Kelston Roundhill Symphony. The Old Barn is about half way up the side of the hill. It’s a lovely space inside, with a good acoustic. The rafters offer opportunities for suspending loudspeakers (tweeters mainly). There is a kitchen and toilet facilities that are not shown in these pictures. It should be a great and intimate location for the performance.

Bass Clarinet as a weather vane

 

Given the description of the ‘winds’ blowing in the last post, I have been giving more thought to spatialisation. The Old Barn is a T shape, as shown in the (badly drawn) picture below:

barn

To give a clear sense of directionality, there will be eight principal loudspeakers located roughly in the positions of the points of the compass, as indicated. Strewn about or hanging from the rafters, will be a ‘forest’ of smaller speakers. Sound will travel through this forest using stereo panning. The four channels SW, W, NW, N will be panned hard left and S, SE, E, NE will be panned hard right. So, to make a journey from N to S will involve panning across from left to right, whereas S to N will be right to left. The complete formula is as follows:

N -> S = left to right
NE -> SW = right to left
E -> W = right to left
SE -> NW = right to left
S -> N = right to left
SW -> NE = left to right
W -> E = left to right
NW -> SE = left to right

In the midst of all this directionality stands the bass clarinet. He will have the instrument on a sling, saxophone style, so that he can turn to face whichever wind is blowing. He will then play off a menu of material for that wind. There will be eight stands, each with a single sheet of music, for this purpose. I suppose the bass clarinet behaves like a weather vane!

I hope the overall effect of all this will be to make it abundantly clear to the audience (who are scattered through the space) which wind is blowing at any given moment. Of course the musical fun will come from the content itself, the interaction with the soloist, and the choreography of the winds as they cross and interact with one another.

 

About Wind

compass

The idea of Movement 1 is to mimic the way the wind blows through the Clump, the circular wood that tops Kelston Round Hill. We will be recording the “rustle of spring”: the sounds of wind in leaves, birdsong, even passing aeroplanes or human conversation. There will also be a wind instrument: the clarinet.

The main musical feature will be gusts of wind blowing in different directions. This will be achieved by using the four cardinal points of the compass (North, South, East, West) and the four ordinal points that bisect these (North-East etc.) These are called ‘winds’ in compass jargon.

In the Mediterranean, they give names to the winds that blow from each of these points. Each wind has its own character (e.g. the sirocco). English history is much less orderly in its categorisation of winds. There are folk names, such as: ‘dryth’, for a dry northerly; ‘piner’, for a north-easterly, ‘custard’ for an easterly, the delightful ‘cow-quaker’ for a southerly May storm, ‘sea turn’ for a westerly coming off the sea, and ‘cat’s nose’ for a cool north-westerly. A sou’wester is also both a garment and a wind. But these names often come from regions other than the West Country. The Roman writer Pliny the Elder catalogued the winds, as follows: Septentrio (N), Caecias (NE) which he replaced with Aquilo (NNE), Subsolanus (E), Vulturnus (SE), Auster (S), Africus (SW), Favonius (W), Corus (NW). It’s possible that high-born Romans living in Bath would have known these names. But this is really insufficient justification to allow for the winds in the Symphony to be so named. So, names will not feature.

Nevertheless, each wind does have a different character, as everybody knows. These characters affect not just the wind direction and its associated weather fronts, but also the general ‘feel’ and atmosphere for as long as that wind prevails.

Movement 1 will therefore group its sound libraries by wind characteristics. Where there is pitched material, the notes of the Aeolian mode will prevail (Aeolus was the Classical god of wind). The winds will blow across the forest of loudspeakers spread around the Barn. This will be achieved by panning across 4 stereo channels, which will then be output to clusters of speakers as appropriate. The live clarinet will stand in the centre, responding to the winds as they blow. Each gust will contain pre-recorded clarinet sounds, natural sounds and a collection of especially composed sounds evocative of the given wind. These may be represented as follows:

Wind Pitch (Aeolian) Character
N A compressing – stretching
NE E moving forward, propulsion
E B waves, braking
SE F divergent, chaotic
S C endless trajectory, heaviness, in suspension
SW G spinning, stationary, obsessive
W D floating, falling, fading away
NW Always unpitched suspending-questioning, wanting to start

The character is evoked using Temporal Semantic Units (TSU) identified by the Laboratoire Musique et Informatique de Marseille. They give the following types:

Morphological characteristics:

  1. duration, which can be time delimited or not)
  2. reiteration (with cycles or not);
  3. number of phases (one or more) and
  4. sound matter (continuous or discontinuous sound).

Kinetic characteristics:

  1. acceleration type (positive or negative)
  2. temporal progression (fast or slow).

Semantic characteristics

  1. process direction (one or more sound parameters moving in the same direction),
  2. movement (motion effects)
  3. sound energy (constant or retained).

There are detailed descriptions of each character, as follows (some from LMIM, some by myself):

Compressing – stretching

Morphological description: Time delimited unit with two contrasting phrases. During the “compressing” phase, the sound matter is discontinuous and erratic. The “stretch out” phase is a globally uniform segment.

Semantic description: First there is a feeling of compression (as if we strongly pressed on an obstacle) then the barrier is suddenly overcome, suppressing all resistance and releasing the power. It is a sudden change from localised energy to scattered energy.

Moving forward, propulsion

 Morphological description: Time delimited unit with three phases. The first phase is quite a sustained fulcrum: a prolonged or homogeneous sound or slow iteration, globally uniform. The following phase is a brief acceleration of intensity, pitch, or any other morphological trait. The third phase is a typical resonance or silence.

Semantic description: We feel the application of a force to a steady state, resulting in an accelerated movement. Projection from a starting point.

Waves, braking

Morphological description: One phase unit, non time delimited, made up of the slow repetition of an increasing then decreasing sound motif. The shape of the profile can concern different morphological criteria (mass, dynamics, grain, etc.)

Semantic description: Each cycle conveys the feeling of being pushed forward, and then driven back until the end. We get the impression that we are stagnating through this unit although we feel motion within each cycle.

Divergent, chaotic

No specific description. The title says it all.

Endless trajectory, heaviness, in suspension

Morphological description: One phase unit, non time delimited, with a linear and usually slow evolution of a sound parameter.

Semantic description: The process must be oriented in a direction (for example, upwards or downwards) and however, it seems to never finish. The sound phenomenon must be long enough to be perceived as a process and not an ephemeral event.

Spinning, stationary, obsessive

Morphological description: One phase unit, non time delimited, in which a parameter (pitch, timbre) is driven by a quick cyclic repetition along with a thrust in each cycle, or with a quick and possibly varied repetition of a pulsed element.

Semantic description: We feel constrained by a mechanical process in which we cannot seem to act. We have the feeling of an object spinning on itself or in space.

Floating, falling, fading away

Morphological description: One phase unit, non time delimited, in which a sound parameter (pitch, dynamic, etc) floats and then falls away.

Semantic description: We feel sustained for a considerable period of time before drifting away, either falling or fading.

Suspending-questioning, wanting to start

No description required. The title is self-explanatory.