Tag Archives: Musical acoustics

In Phase

Lissajous curve

Lissajous curve

Something which happens to me on a rather regular basis (and about which I blogged before) is that I’ll hear about something right after thinking about it. For instance, if I think about the fact that a given tool should exist, it may be announced right at that moment.

Hey, I was just thinking about this!

The effect is a bit strange but it’s quite easy to explain. It feels like a “premonition,” but it probably has more to do with “being in phase.” In some cases, it may also be that I heard about that something but hadn’t registered the information. I know it happens a lot and  it might not be too hard to trace back. But I prefer thinking about phase.

And, yes, I am thinking about phase difference in waves. Not in a very precise sense, but the image still works, for me. Especially with the Lissajous representation, as above.

See, I don’t particularly want to be “ahead of the curve” and I don’t particularly mind being “behind the curve.” But when I’m right “in the curve,” something interesting happens. I’m “in the now.”

I originally thought about being “in tune” and it could also be about “in sync” or even “matching impedances.” But I still like the waves analogy. Especially since, when two waves are in phase, they reinforce one another. As analogies go, it’s not only a beautiful one, but a powerful one. And, yes, I do think about my sweetheart.

One reason I like the concept of phase difference is that I think through sound. My first exposure to the concept comes from courses in musical acoustics, almost twenty years ago. It wasn’t the main thing I’d remember from the course and it’s not something I investigated at any point since. Like I keep telling students, some things hit you long after you’ve heard about it in a course. Lifelong learning and “landminds” are based on such elements, even tiny unimportant ones. Phase difference is one such thing.

And it’s no big deal, of course. It’s not like I spent days thinking about these concepts. But I’ve been feeling like writing, lately, and this is as good an opportunity as any.

The trigger for this particular thing is rather silly and is probably explained more accurately, come to think of it, by “unconsciously registering” something before consciously registering it.

Was having breakfast and started thinking about the importance of being environmentally responsible, the paradox of “consumption as freedom,” the consequences of some lifestyle choices including carfree living, etc. This stream of thought led me, not unexpectedly, to the perspectives on climate change, people’s perception of scientific evidence, and the so-called ClimateGate. I care a lot about critical thinking, regardless of whether or not I agree with a certain idea, so I think the email controversy shows the importance of transparency. So far, nothing unexpected. Within a couple of minutes, I had covered a few of the subjects du jour. And that’s what struck me, because right then, I (over)heard a radio host introduce a guest whose talk is titled:

What is the role of climate scientists in the climate change debate?

Obviously, Tremblay addressed ClimateGate quite directly. So my thoughts were “in phase” with Tremblay’s.

A few minutes prior to (over)hearing this introduction, I (over)heard a comment about topics of social conversations at different points in recent history. According to screenwriter Fabienne Larouche, issues covered in the first seasons of her “flagship” tv series are still at the forefront in Quebec society today, fourteen years later. So I was probably even more “in tune” with the notion of being “in phase.” Especially with my society.

I said “(over)heard” because I wasn’t really listening to that radio show. It was just playing in the background and I wasn’t paying much attention. I don’t tend to listen to live radio but I do listen to some radio recordings as podcasts. One reason I like doing so is that I can pay much closer attention to what I hear. Another is that I can listen to what I want when I feel like listen to it, which means that I can prepare myself for a heady topic or choose some tech-fluff to wind down after a course. There’s also the serendipity of listening to very disparate programmes in the same listening session, as if I were “turning the dial” after each show on a worldwide radio (I often switch between French and English and/or between European and North American sources). For a while now, I’ve been listening to podcasts at double-speed, which helps me focus on what’s most significant.

(In Jazz, we talk about “top notes,” meaning the ones which are more prominent. It’s easier to focus on them at double-speed than at normal speed so “double-times” have an interesting cognitive effect.)

So, I felt “in phase.” As mentioned, it probably has much more to do with having passively heard things without paying attention yet letting it “seep into my brain” to create connections between a few subjects which get me to the same point as what comes later. A large part of this is well-known in psychology, especially in terms of cognition. We start noticing things when they enter into a schema we have in our mind. These things we start noticing were there all along so the “discovery” is only in our mind (in the sense that it wouldn’t be a discovery for others). When we learn a new word, for instance, we start hearing it everywhere.

But there are also words which start being used by everyone because they have been diffused largely at a given point in time. An actual neologism can travel quickly and a word in our passive vocabulary can also come to prominence, especially in mainstream media. Clearly, this is an issue of interest to psychologists, folklorists, and media analysts alike. I’m enough of a folklorist and media observer to think about the social processes behind the diffusion of terms regardless of what psychologists think.

A few months back, I got the impression that the word “nimble” had suddenly increased in currency after it was used in a speech by the current PotUS. Since I’m a non-native speaker of English, I’m likely to be accused of noticing the word because it’s part my own passive vocabulary. I have examples in French, though some are with words which were new to me, at the time («peoplisation», «battante»…). I probably won’t be able to defend myself from those who say that it’s just a matter of my own exposure to those terms. Though there are ways to analyze the currency of a given term, I’m not sure I trust this type of analysis a lot more than my gut feeling, at least in terms of realtime trends.

Which makes me think of “memetics.” Not in the strict sense that Dawkins would like us to use. But in the way popular culture cares about the propagation of “units of thought.” I recently read a fascinating blogpost (in French) about  memetics from this perspective, playing Dawkins against himself. As coincidences keep happening (or, more accurately, as I’m accutely tuned to find coincidences everywhere), I’ve been having a discussion about Mahir‘s personal homepage (aka “I kiss you”), who became an “Internet celebrity” through this process which is now called memetic. The reason his page was noticed isn’t that it was so unique. But it had this je ne sais quoi which captured the imagination, at the time (the latter part of the “Dot-Com Bubble”). As some literary critics and many other humanists teach us, it’s not the item itself which counts, it’s how we receive it (yes, I tend to be on the “reception” and “eye of the beholder” side of things). Mahir was striking because he was, indeed, “out of phase” with the times.

As I think about phase, I keep hearing the other acoustic analogy: the tuning of sine waves. When a sine wave is very slightly “out of tune” with another, we hear a very slow oscillation (interference beats) until they produce resonance. There’s a direct relationship between beat tones and phase, but I think “in tune” and “in phase” remain separate analogies.

One reason I like to think about waves for these analogies is that I tend to perceive temporal change through these concepts. If we think of historical change through cycles, being “in phase” is a matter of matching two change processes until they’re aligned but the cycles may be in harmonic relationships. One can move twice as fast as society and still be “in phase” with it.

Sure, I’m overextending the analogies, and there’s something far-fetched about this. But that’s pretty much what I like about analogical thinking. As I’m under the weather, this kind of rambling is almost therapeutic.


Selling Myself Long

Been attending sessions by Meri Aaron Walker about online methods to get paid for our expertise. Meri coaches teachers about those issues.

MAWSTOOLBOX.COM

There’s also a LearnHub “course”: Jumpstart Your Online Teaching Career.

Some notes, on my own thinking about monetization of expertise. Still draft-like, but RERO is my battle cry.

Some obstacles to my selling expertise:

  • My “oral personality.”
  • The position on open/free knowledge in academia and elsewhere.
  • My emphasis on friendship and personal rapport.
  • My abilities as an employee instead of a “boss.”
  • Difficulty in assessing the value of my expertise.
  • The fact that other people have the same expertise that I think I have.
  • High stakes (though this can be decreased, in some contexts).
  • My distaste for competition/competitiveness.
  • Difficulty at selling and advertising myself (despite my social capital).
  • Being a creative generalist instead of a specialist.

Despite all these obstacles, I have been thinking about selling my services online.

One reason is that I really do enjoy teaching. As I keep saying, teaching is my hobby (when I get paid, it’s to learn how to interact with other learners and to set up learning contexts).

In fact, I enjoy almost everything in teaching (the major exception being grading/evaluating). From holding office hours and lecturing to facilitating discussions and answering questions through email. Teaching, for me, is deeply satisfying and I think that learning situations which imply the role of a teacher still make a lot of sense. I also like more informal learning situations and I even try to make my courses more similar to informal teaching. But I still find specific value in a “teaching and learning” system.

Some people seem to assume that teaching a course is the same thing as “selling expertise.” My perspective on learning revolves to a large extent on the difference between teaching and “selling expertise.” One part is that I find a difference between selling a product or process and getting paid in a broader transaction which does involve exchange about knowledge but which isn’t restricted to that exchange. Another part is that I don’t see teachers as specialists imparting their wisdom to eager masses. I see knowledge as being constructed in diverse situations, including formal and informal learning. Expertise is often an obstacle in the kind of teaching I’m interested in!

Funnily enough, I don’t tend to think of expertise as something that is easily measurable or transmissible. Those who study expertise have ways to assess something which is related to “being an expert,” especially in the case of observable skills (many of those are about “playing,” actually: chess, baseball, piano…). My personal perspective on expertise tends to be broader, more fluid. Similar to experience, but with more of a conscious approach to learning.

There also seems to be a major difference between “breadth of expertise” and “topics you can teach.” You don’t necessarily need to be very efficient at some task to help someone learn to do it. In fact, in some cases, being proficient in a domain is an obstacle to teaching in that domain, since expertise is so ingrained as to be very difficult to retrieve consciously.

This is close to “do what I say, not what I do.” I even think that it can be quite effective to actually instruct people without direct experience of these instructions. Similar to consulting, actually. Some people easily disagree with this point and some people tease teachers about “doing vs. teaching.” But we teachers do have a number of ways to respond, some of them snarkier than others. And though I disagree with several parts of his attitude, I quite like this short monologue by Taylor Mali about What Teachers Make.

Another reason I might “sell my expertise” is that I genuinely enjoy sharing my expertise. I usually provide it for free, but I can possibly relate to the value argument. I don’t feel so tied to social systems based on market economy (socialist, capitalist, communist…) but I have to make do.

Another link to “selling expertise” is more disciplinary. As an ethnographer, I enjoy being a “cultural translator.” of sorts. And, in some cases, my expertise in some domains is more of a translation from specialized speech into laypeople’s terms. I’m actually not very efficient at translating utterances from one language to another. But my habit of navigating between different “worlds” makes it possible for me to bridge gaps, cross bridges, serve as mediator, explain something fairly “esoteric” to an outsider. Close to popularization.

So, I’ve been thinking about what can be paid in such contexts which give prominence to expertise. Tutoring, homework help, consulting, coaching, advice, recommendation, writing, communicating, producing content…

And, finally, I’ve been thinking about my domains of expertise. As a “Jack of All Trades,” I can list a lot of those. My level of expertise varies greatly between them and I’m clearly a “Master of None.” In fact, some of them are merely from personal experience or even anecdotal evidence. Some are skills I’ve been told I have. But I’d still feel comfortable helping others with all of them.

I’m funny that way.

Domains of  Expertise

French

  • Conversation
  • Reading
  • Writing
  • Culture
  • Literature
  • Regional diversity
  • Chanson appreciation

Bamanan (Bambara)

  • Greetings
  • Conversation

Social sciences

  • Ethnographic disciplines
  • Ethnographic field research
  • Cultural anthropology
  • Linguistic anthropology
  • Symbolic anthropology
  • Ethnomusicology
  • Folkloristics

Semiotics

Language studies

  • Language description
  • Social dimensions of language
  • Language change
  • Field methods

Education

  • Critical thinking
  • Lifelong learning
  • Higher education
  • Graduate school
  • Graduate advising
  • Academia
  • Humanities
  • Social sciences
  • Engaging students
  • Getting students to talk
  • Online teaching
  • Online tools for teaching

Course Management Systems (Learning Management Systems)

  • Oncourse
  • Sakai
  • WebCT
  • Blackboard
  • Moodle

Social networks

  • Network ethnography
  • Network analysis
  • Influence management

Web platforms

  • Facebook
  • MySpace
  • Ning
  • LinkedIn
  • Twitter
  • Jaiku
  • YouTube
  • Flickr

Music

  • Cultural dimensions of music
  • Social dimensions of music
  • Musicking
  • Musical diversity
  • Musical exploration
  • Classical saxophone
  • Basic music theory
  • Musical acoustics
  • Globalisation
  • Business models for music
  • Sound analysis
  • Sound recording

Beer

  • Homebrewing
  • Brewing techniques
  • Recipe formulation
  • Finding ingredients
  • Appreciation
  • Craft beer culture
  • Brewing trends
  • Beer styles
  • Brewing software

Coffee

  • Homeroasting
  • Moka pot brewing
  • Espresso appreciation
  • Coffee fundamentals
  • Global coffee trade

Social media

Blogging

  • Diverse uses of blogging
  • Writing tricks
  • Workflow
  • Blogging platforms

Podcasts

  • Advantages of podcasts
  • Podcasts in teaching
  • Filming
  • Finding podcasts
  • Embedding content

Technology

  • Trends
  • Geek culture
  • Equipment
  • Beta testing
  • Troubleshooting Mac OS X

Online Life

Communities

  • Mailing-lists
  • Generating discussions
  • Entering communities
  • Building a sense of community
  • Diverse types of communities
  • Community dynamics
  • Online communities

Food

  • Enjoying food
  • Cooking
  • Baking
  • Vinaigrette
  • Pizza dough
  • Bread

Places

  • Montreal, Qc
  • Lausanne, VD
  • Bamako, ML
  • Bloomington, IN
  • Moncton, NB
  • Austin, TX
  • South Bend, IN
  • Fredericton, NB
  • Northampton, MA

Pedestrianism

  • Carfree living
  • Public transportation
  • Pedestrian-friendly places

Tools I Use

  • PDAs
  • iPod
  • iTunes
  • WordPress.com
  • Skype
  • Del.icio.us
  • Diigo
  • Blogger (Blogspot)
  • Mac OS X
  • Firefox
  • Flock
  • Internet Explorer
  • Safari
  • Gmail
  • Google Calendar
  • Google Maps
  • Zotero
  • Endnote
  • RefWorks
  • Zoho Show
  • Wikipedia
  • iPod touch
  • SMS
  • Outlining
  • PowerPoint
  • Slideshare
  • Praat
  • Audacity
  • Nero Express
  • Productivity software

Effective Web searches

Socialization

  • Social capital
  • Entering the field
  • Creating rapport
  • Event participation
  • Event hosting

Computer Use

  • Note-taking
  • Working with RSS feeds
  • Basic programing concepts
  • Data manipulations

Research Methods

  • Open-ended interviewing
  • Qualitative data analysis

Personal

  • Hedonism
  • Public speaking
  • GERD
  • Strabismus
  • Moving
  • Cultural awareness