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The Blue Notes of Sampling

Sound and Tech

DOI: https://doi.org/10.59350/mc118-qfk05

This is article 2.0  in Sounding Out!‘s April  Forum on “Sound and Technology.” Every Monday this month, you’ll be hearing new insights on this age-old pairing from the likes of Sounding Out! veterano Aaron Trammell along with new voices Andrew Salvati and Owen Marshall.  These fast-forward folks will share their thinking about everything from Auto-tune to techie manifestos. So, turn on your quantizing for Sounding Out! and enjoy today’s supersonic in-depth look at sampling from from SO! Regular Writer Primus Luta.  –JS, Editor-in-Chief

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My favorite sample-based composition? No question about it: “Stroke of Death” by Ghostface and produced by The RZA.

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Supposedly the story goes, RZA was playing records in the studio when he put on the Harlem Underground Band’s album. It is a go-to album in a sample-based composer collection, because of the open drum breaks. One such break appears in the cover of Bill Wither’s “Ain’t No Sunshine”, notably used by A Tribe Called Quest on “Everything is Fair.”

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RZA, a known break beat head, listened as the song approached the open drums, when the unthinkable happened: a scratch in his copy of the record. Suddenly, right before the open drums dropped, the vinyl created its own loop, one that caught RZA’s ear. He recorded it right there and started crafting the beat.

This sample is the only source material for the track. RZA throws a slight turntable backspin in for emphasis, adding to the jarring feel that drives the beat. That backspin provides a pitch shift for the horn that dominates the sample, changing it from a single sound into a three-note melody. RZA also captures some of the open drums so that the track can breathe a bit before coming back to the jarring loop. As accidental as the discovery may have been, it is a very precisely arranged track, tailor-made for the attacking vocals of Ghostface, Solomon Childs, and the RZA himself.

"How to: fix a scratched record" by Flickr user Fred Scharmen, CC BY-NC-SA 2.0
“How to: fix a scratched record” by Flickr user Fred Scharmen, CC BY-NC-SA 2.0

“Stroke of Death” exemplifies how transformative sample-based composition can be. Other than by knowing the source material, the sample is hard to identify. You cannot figure out that the original composition is Wither’s “Ain’t No Sunshine” from the one note RZA sampled, especially considering the note has been manipulated into a three-note melody that appears nowhere in either rendition of the composition. It is sample based, yes, but also completely original.

Classifying a composition like this as a ‘happy accident’ downplays just how important the ear is in sample-based composition, particularly on the transformative end of the spectrum. J Dilla once said finding the mistakes in a record excited him and that it was often those mistakes he would try to capture in his production style. Working with vinyl as a source went a long way in that regard, as each piece of vinyl had the potential to have its own physical characteristics that affected what one heard. It’s hard to imagine “Stroke of Death” being inspired from a digital source. While digital files can have their own glitches, one that would create an internal loop on playback would be rare.

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"Unpacking of the Proteus 2000" by Flickr user Anders Dahnielson, CC BY-NC-SA 2.0
“Unpacking of the Proteus 2000” by Flickr user Anders Dahnielson, CC BY-NC-SA 2.0

There has been a change in the sound of sampling over the past few decades. It is subtle but still perceptible; one can hear it even if a person does not know what it is they are hearing. It is akin to the difference between hearing a blues man play and hearing a music student play the blues. They technically are both still the blues, but the music student misses all of the blue notes.

The ‘blue notes’ of the blues were those aspects of the music that could not be transcribed yet were directly related to how the song conveyed emotion. It might be the fact that the instrument was not fully in tune, or the way certain notes were bent but others were not, it could even be the way a finger hit the body of a guitar right after the string was strummed. It goes back farther than the blues and ultimately is not exclusive to the African American tradition from which the phrase derives; most folk music traditions around the world have parallels. “The Rite of Spring” can be understood as Stravinsky ‘sampling’ the blue notes of Transylvanian folk music. In many regards sample-based composing is a modern folk tradition, so it should come as no surprise that it has its own blue notes.

The sample-based composition work of today is still sampling, but much of it lacks the blue notes that helped define the golden era of the art. I attribute this discrepancy to the evolution of technology over the last two decades. Many of the things that could be understood as the blue notes of sampling were merely ways around the limits of the technology. In the same way, the blue notes of most folk music happened when the emotion went beyond the standards of the instrument (or alternately the limits imposed upon it by the literal analysis of western theory). By looking at how the technology has evolved we can see how blue notes of sampling are being lost as key limitations are being overcome by “advances.”

e-mu

First, let’s consider the E-Mu SP-1200, which is still thought to be the most definitive sounding sampler for hip-hop styled sample-based compositions, particularly related to drums. The primary reason for this is its low-resolution sampling and conversion rates. For the SP-1200 the Analog to Digital (A/D) and Digital to Analog (D/A) converters were 12-bit at a sample rate of 26.04 kHz (CD quality is 16-bit 44.1 kHz). No matter what quality the source material, there would be a loss in quality once it was sampled into and played out of the SP-1200. This loss proved desirable for drum sounds particularly when combined with the analog filtering available in the unit, giving them a grit that reflected the environments from which the music was emerging.

Sp1200_Back_Panel

On top of this, individual samples could only be 2.5 seconds long, with a total available sample time of only 10 seconds. While the sample and conversion rates directly affected the sound of the samples, the time limits drove the way that composers sampled. Instead of finding loops, beatmakers focused on individual sounds or phrases, using the sequencer to arrange those elements into loops. There were workarounds for the sample time constraints; for example, playing a 33-rpm record at 45 rpm to sample, then pitching it back down post sampling was a quick way to increase the sample time. Doing this would further reduce the sample rate, but again, that could be sonically appealing.

An under appreciated limitation of the SP-1200 however, was the visual feedback for editing samples. The display of the SP-1200 was completely alpha numeric; there were no visual representations of the sample other than numbers that were controlled by the faders on the interface. The composer had to find the start and end points of the sample solely by ear. Two producers might edit the exact same kick drum with start times 100 samples (a fraction of a millisecond) apart. Were one of the composers to have recorded the kick at 45 rpm and pitched it down, the actual resolution for the start and end times would be different. When played in a sequence, these 100 samples affect the groove, contributing directly to the feel of the composition. The timing of when the sample starts playback is combined with the quantization setting and the swing percentage of the sequencer. That difference of 100 samples in the edit further offsets the trigger times, which even with quantization turned off fit into the 24 parts per quarter grid limitations of the machine.

akai

Akai’s MPC-60 was the next evolution in sampling technology. It raised the sample and conversion rates to 16-bit and 40 kHz. Sample time increased to a total of 13.1 seconds (upgradable to 26.2). Sequencing resolution increased to 96 parts per quarter. Gone was the crunch of the SP-1200, but the precision went up both in sampling and in sequencing. The main trademark of the MPC series was the swing and groove that came to Akai from Roger Linn’s Linn Drum. For years shrouded in mystery and considered a myth by many, in truth there was a timing difference that Linn says was achieved by delaying certain notes by samples. Combined with the greater PPQ resolution in unquantized mode, even with more precision than the SP-1200, the MPC lent itself to capturing user variation.

Despite these technological advances, sample time and editing limitations, combined with the fact that the higher resolution sampling lacked the character of the SP-1200, kept the MPC from being the complete package sample composers desired. For this reason it was often paired with Akai’s S-950 rack sampler. The S-950 was a 12-bit sampler but had a variable sample rate between 7.5 kHz and 40 kHz. The stock memory could hold 750 KB of samples which at the lowest sample rate could garner upwards of 60 seconds of sampling and at the higher sample rates around 10 seconds. This was expandable to up to 2.5 MB of sample memory.

s950

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The editing capabilities made the S-950 such a powerful sampler. Being able to create internal sample loops, key map samples to a keyboard, modify envelopes for playback, and take advantage of early time stretching (which would come of age with the S-1000)—not to mention the filter on the unit—helped take sampling deeper into the sound design territory. This again increased the variable possibilities from composer to composer even when working from the same source material. Often combined with the MPC for sequencing, composers had the ultimate sample-based composition workstation.

Today, there are literally no limitations for sampling. Perhaps the subtlest advances have developed the precision with which samples can be edited. With these advances, the biggest shift has been the reduction of the reliance on ears. Recycle was an early software program that started to replace the ears in the editing process. With Recycle an audio file could be loaded, and the software would chop the sample into component parts by searching for the transients. Utilizing Recycle on the same source, it was more likely two different composers could arrive at a kick sample that was truncated identically.

waveform

Another factor has been the waveform visualization of samples for editing. Some earlier hardware samplers featured the waveform display for truncating samples, but the graphic resolution within the computer made this even more precise. By looking at the waveform you are able to edit samples at the point where a waveform crosses the middle point between the negative and positive side of the signal, known as the zero-crossing. The advantage of zero-crossing sampling is that it prevents errors that happen when playback goes from either side of the zero point to another point in one sample, which can make the edit point audible because of the break in the waveform. The end result of zero-crossing edited samples is a seamlessness that makes samples sound like they naturally fit into a sequence without audible errors. In many audio applications snap-to settings mean that edits automatically snap to zero-crossing—no ears needed to get a “perfect” sounding sample.

It is interesting to note that with digital files it’s not about recording the sample, but editing it out of the original file. It is much different from having to put the turntable on 45 rpm to fit a sample into 2.5 seconds. Another differentiation between digital sample sources is the quality of the files, whether original digital files (CD quality or higher), lossless compression (FLAC), lossy compressed (MP3, AAC) or the least desirable though most accessible, transcoded (lossy compression recompressed such as YouTube rips). These all result in a different degradation of quality than the SP-1200. Where the SP-1200’s downsampling often led to fatter sounds, these forms of compression trend toward thinner-sounding samples.

converter

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Some producers have created their own sound using thinned out samples with the same level of sonic intent as The RZA’s on “Stroke of Death.” The lo-fi aesthetic is often an attempt to capture a sound to parallel the golden era of hardware-based sampling. Some software-based samplers by example will have an SP-1200 emulation button that reduces bit rates to 12-bit. Most of software sequencers have groove templates that allow for the sequencers to emulate grooves like the MPC timing.

Perhaps the most important part of the sample-based composition process however, cannot be emulated: the ear. The ear in this case is not so much about the identification of the hot sample. Decades of history should tell us that the hot sample is truly a dime a dozen. It takes a keen composer’s ear to hear how to manipulate those sounds into something uniquely theirs. Being able to listen for that and then create that unique sound—utilizing whatever tools— that is the blue note of sampling. And there is simply no way to automate that process.

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Featured image: “Blue note inverted” by Flickr user Tim, CC BY-ND 2.0

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Primus Luta is a husband and father of three. He is a writer and an artist exploring the intersection of technology and art, and their philosophical implications.  He maintains his own AvantUrb site. Luta was a regular presenter for Rhythm Incursions. As an artist, he is a founding member of the collective Concrète Sound System, which spun off into a record label for the exploratory realms of sound in 2012. Recently Concréte released the second part of their Ultimate Break Beats series for Shocklee.

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(Sound)Walking Through Smithfield Square in Dublin

Sounds of the City forum

DOI: https://doi.org/10.59350/pywqa-vdt14

Editor’s Note:  This month Sounding Out! is thrilled to bring you a collection of posts that will change the way you hear cities. The Sounds of the City series will prompt readers to think through ideas about urban space and sound. Are cities as noisy as we think they are? Why are cities described as “loud”? Who makes these decisions about nomenclature and why?

We kicked things off last week with my critical reading of sound in Lorraine Hansberry’s A Raisin in the Sun, a play about African Americans in Chicago that still rings/stings true today. Regular writer Regina Bradley will discuss the dichotomy of urban and suburban in the context of sound (noisy versus quiet, respectively),  and CFP winner Lilian Radovac will share with us a photoessay on the sound installation Megaphóne in Montreal.  Today, guest writer Linda O’ Keeffe takes readers on a soundwalk of Smithfield Square in Dublin, Ireland and specifically of the Smithfield Horse Fair, in order to illustrate how urban renewal disrupts city soundscapes and how sound reclaims those spaces.–Managing Editor Liana M. Silva

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Since 2010, as part of my PhD research, I have conducted over two dozen sound walks through the Smithfield Square and its environs, in Dublin’s North Inner city; with teenagers, by myself and through organising deep listening group walks as part of World Listening Day. These walks were designed to encourage the participating walkers to listen intently to this space and compare it to other spaces on the north side of Dublin city. The walks were also designed to examine the changing use and design of the Smithfield space over the past four years. This essay is drawn from the findings of this research, which explored the co-production of space and soundscapes with 84 teenagers (43 girls and 41 boys) from Dublin, Ireland. I include some of their observations of Smithfield Square here.

The Smithfield Square’s redesign began in 1996 as part of an urban regeneration project, and was completed in May of 2013. Smithfield is a traditional working class area, historically connected to wholesale markets, and in recent years it has gone through many iterations. In a push towards gentrification, the Smithfield Square space was ripped up, rebuilt, re-imagined and ripped up again because each iteration of its design proved unattractive to potential visitors/users of this space. According to the Royal Institute of the Architects of Ireland (1991), Dublin City Council considered these users were tourists and new middle class urbanites, not the locals.

Large-scale apartment complexes with business premises on the ground floor, tourist facilities, and an art house cinema were situated alongside smaller, older social housing, flat complexes and wholesale markets within the area. This reshaping of architecture impacts the diffusion of sound in space. It changes what Brandon LaBelle (2010) calls the acoustic territories that demarcate space where sound is no longer attributable to specific spaces or communities. Additionally, since the early 1990s, sounds within Smithfield began to change with the removal or downsizing of certain productive practices, such as the fish and fruit markets. This reduced the kind of traffic, both pedestrian and commercial, which would have moved and sounded through the area. The Smithfield Horse Fair disrupts the area’s soundscape and opens up the possibilities of the space of Smithfield Square for the broader community.

The design of the square, its restaurants, boutique shops and cafes, suggest that the soundscape designed for this space was meant to be a quiet and calm, recreating in the square what Karin Bijsterveld has defined in Mechanical Sound (2008) as the quiet of the middle classes. The sounds produced by the fair are then seen as counter to the types of sensory experiences that, Monica Montserrat Degen argues in her book Sensing Cities: Regenerating Public Life in Barcelona and Manchester (2008), are acceptable to the middle classes, who purchase a type of sensory/sonic experience. However, the soundwalks I describe contest what “quiet” means in the context of the square.

Listening to the Square

The Smithfield square in 2009. All pictures in this post come courtesy of the author, who holds the rights.
The Smithfield square in 2009. All pictures in this post come courtesy of the author, who holds the rights.
The Smithfield Square in 2009
The Smithfield Square in 2009

In 2009 the Smithfield Square, which is laid with thousands of cobblestones, had placed around one side twelve 26.5 metre gas lighting masts, at one end of the square two lines of trees were planted with seating placed among them, and at the other end some large concrete plant pots. The seating located within the trees, attracted groups of homeless people and addicts. As a result, the dominant soundscape during the day was the sounds of men and women shouting obscenities at each other, with the susurration of trees rarely heard over this dominant sound. One of my teenage participants noted, “you always hear people screaming in the background” (Participant 2).

The Smithfield square in 2009
The Smithfield square in 2009

Aside from the shouting voices and loud reflections from singular sound sources within the Square such as the clatter of suitcase wheels across the cobblestones, seagulls screeching overhead, the beeping of trucks reversing and even the sounds of people talking at a distance, the teenagers who participated in the soundwalks defined the space as silent. Their use of the word silent did not mean the absence of sound, but rather an absence of activities, life, general sounds of community, consumption and production.

One sound that dominates the soundscape of Smithfield and its surroundings is the sound of the Luas tramline. The Luas line sits at one end of the Square and the sounds produced are distinctive: there is the whoosh as it passes, the ding a ling of its bells and the sounds of the doors opening and closing. The sound of the Luas echoes around the area from 6 in the morning till midnight. The sounds have become synonymous with that part of the city. The teenage participants defined these sounds as rhythmic, musical, “like a ballet.” For the teenager participants, the sounds of the Luas has been the only constant sound within Smithfield.

Public housing areas surrounding Smithfield
Public housing areas surrounding Smithfield

The sounds of children and teenagers were absent, even with the vast housing areas that surround Smithfield Square—some dating back to the 1940s. Within five minutes of the square are two primary schools and one all-boy’s secondary school. During the day, I would hear the children playing in the school grounds, and in flat complexes close to the Smithfield Square. Each of these spaces were gated and enclosed. Most of the teenage participants lived within such housing areas, and would often refer to the level of noise made by the children within their immediate housing areas. Yet, none of the teenagers, and no young children, used the Smithfield Square for “hanging out” or playing.

A primary school in Smithfield. The play area is on the school roof
A primary school in Smithfield. The play area is on the school roof

The teenagers argued that the Smithfield Square had no point; it was too wide open and too quiet.

Group 11b: Although, there probably was sound for somebody who listened to it but because we were all coming down from the city, the space seemed to be nothing… it just seemed real quiet, empty.

Because of that, the teenagers felt they could not group together to chat. For them, it would be like situating themselves in the middle of a stage. Their sounds were amplified or reverberated, ironically creating a feeling of being surveilled. They felt more comfortable and safer in confined areas, such as street corners, laneways, and the archways of large buildings. Within these smaller spaces, the sounds produced have closer reflections. Teenagers often surround themselves with sounds by shouting, playing music, etc., creating what Barry Blesser and Linda-Ruth Salter in Spaces Speak, Are You Listening? (2009) call a sonic bubble. These “territorial bubbles appear as if by magic around a group of individuals if they begin to interact, and the group quickly acquires rights to the arena” (2009:34) thus creating a temporal space. They did not feel they could do so in such an open area.

Smithfield Square by the summer of 2010
Smithfield Square by the summer of 2010
The Smithfield Square in 2011
The Smithfield Square in 2011

Because of the poor planning and design of the Smithfield area, there are vast empty spaces surrounded by fencing or construction hoarding, numerous derelict buildings, and closed-down shops and restaurants. The Smithfield Square is no different, with numerous buildings left empty as a result of foreclosures or bankruptcy. The silence in this space is indicative of the loss of the social and economic processes. The vast square then takes on another level of silence, the loss of productive meaning, the presence of poverty, homelessness and unemployment.

On one walk with the teenagers I noted that they would group together in the square, even when they were told to walk around and record sounds within the space independently. Later, they said there were no sounds to record, so they just walked towards the closest sound source, a small shopping market in the square. I had noted numerous individual sounds, but they would have required standing in the middle of the square to record them.  During focus group sessions after the soundwalks, the teenagers defined positive soundscapes as places with numerous loud sounds, the voices of hundreds within busy shopping streets, music coming from stores and traffic in the distance. These sounds defined a city, and made the teenagers feel safe and enclosed. Smithfield contained none of these kinds of sounds.

Soundwalking the Smithfield Horse Fair

Displaying horse carriages
Displaying horse carriages

There are a few events held regularly within the square since it re-opened in 2013. Some of these events are part of the Dublin City Council’s efforts to invigorate the space, such as food and art markets, as well as fairs for various seasons and holidays. One of the few public events that take place in Smithfield Square is the Smithfield Horse Fair, which happens on the first Sunday of every month. Having walked through this space repeatedly over a period of 3 years, it was only when I attended the horse fair that the space came alive, it had a purpose.

The horse fair has been a contentious event for both locals and city managers for the past two decades, with the horse dealers arguing that there is either a historical precedence for the horse fair or with the Dublin city councillors arguing that the land was historically used for the selling of cattle for market. The appearance within the Smithfield Square once a month of the horse fair brings with it a vast and lively, and sometimes, as defined by the media and Dublin City Council, a threatening soundscape/environment.

Some sounds defined as threatening are the loud whinnying of horses as they are jostled around the fair. The media has also reported, on several occasions, large-scale fights, which have broken out during the fair, leading to the presence of riot police. This eventually led to the gating of the fair and an extreme police presence as if these measures might reduce such sounds through the threat of arrest. For those living in the new apartment complexes, the sounds produced at the fair are amplified because of the design of the space, and possibly sound more threatening as a result.

During one walk of the Smithfield horse fair that I did in April 2013, some of the audible sounds were horses neighing and whinnying in panic, horse shoes on the cobblestones, traders shouting out their wares of horse paraphernalia, seats, stirrups etc., the voices of old men, which was the dominant background sound, and the sounds of traditional Irish music.

Outside of the gated fair were the sounds of large groups of teenagers, shouting and calling to each other. The space was alive with sound; the voices of teenagers merged with, or were lost within, the chaos of other sounds, becoming part of a larger soundscape. Because the space was busy with people, activities, music and even security there was a reason to use the square, even if you were not actively taking part in the event. The fair created a space for teenagers to engage with, and perhaps feel safe within the boundaries of its soundscape. Suddenly the square was as busy and as loud as the city centre.

Security at the horse fair
Security at the horse fair
Smith hammering horse shoes at the horse fair
Smith hammering horse shoes at the horse fair

While walking through this soundscape, I encountered different kinds of soundmarks. For example, the banging of horseshoes was quite distinctive because it is, as Schafer would define, an archetypal sound, one that no longer belongs in the city. It felt like hearing a sound from the past. Yet this kind of sound creates a kind of historic continuity with the past (Barry Truax, Acoustic Communication, 2000). When discussing the cobblestones within Smithfield Square, most of the young female participants stated that it was not so much the look of the cobblestones that gave the space a sense of history but rather the sounds made when something moved over them. The lack of people and activities within the square meant that these sounds were rarely activated. The soundscape of the fair on those days transformed Smithfield, lifting it out of its everyday silences, which seemed to invite young people to participate. It was reactivated with life.

What was noticeable about the two fairs I visited was that by the second event in 2013, there were far fewer horses than at previous fairs. There were about 8 or 10 horses being paraded around the space by what looked like homeless people or addicts. There seemed to be no real horse-trading; the soundscape lacked the sounds of horses. Instead, the space had become a gathering space, with groups of tourists wandering around taking pictures of anything and everything.

Teenage boys outside the gates of the horse fair 2013
Teenage boys outside the gates of the horse fair 2013
Teenage girls at the fair
Teenage girls at the fair

Conclusion

This fair does not fit within the cultural ethos of regenerated urban spaces like Smithfield, where culture is defined as a consumerist process or part of the arts. However, the space takes on new potentialities as a result of the presence of people, sounds and activities, allowing the teenagers to view the possibilities of spatial use. Sounds can distinguish a space, as identified during the Smithfield horse fair. These sounds also remove focus from teenagers’ voices audible within the space, and transfer it to other sounds. The space was no longer a large fishbowl viewable from any angle; instead it had become a busy vibrant immersive soundscape.

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Featured Image: “Smithfield Horse Fair, Dublin” by Flickr user Admanchester, CC BY-NC-ND 2.0

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Linda O Keeffe is secretary to the Irish Sound Science and Technology Association and editor of the Interference Journal. Her practice is concerned with an exploration, both academic and creative, of the ways in which sound alters our experience of different spaces. Her art training was within the sculpture department of IADT under the tutelage of Finola Jones. She completed a Masters in Virtual Reality in NCAD with Kevin Atherton, and just finished a PhD in sociology in NUIM. Her research examined the urban of Dublin city soundscape as socially and technologically co-constructed. She has composed for dance, theatre, quartets, and new instrument performers, installed sound installations for commissions in Ireland, China and Holland, and has had radio works performed both nationally and internationally. In 2008 she mentored under Eric Leonardson in Chicago, a sound artist and performer. More recently, she was commissioned by Resonance FM to create a work for radio for the 2013 Derry city of culture event. Current projects include a solo exhibition in November 2014 for the Limerick Sculpture Centre, which will be a creative realization of her PhD research. You can find her at www.lindaokeeffe.com.

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