Saturday, April 15, 2017

Field Trip to Rosewood Recording Studio

Because I am lucky and I have the most awesome friends, we were able to take a field trip to Rosewood Recording Studio during this unit. I've known the Randles since high school (they were part of my inspiration to homeschool our children, in fact) and they are the nicest, most interesting people you could hope to meet. Guy gave us a great introduction to sound basics and then showed us how he mixes and captures sound in his studio. He even recorded the children singing and then showed them how he could isolate individual voices, slow down and speed up different tracks, add customized reverb profiles, etc. They LOVED it!
The dogs were very friendly too.
It's such a cool studio, full of so many cords and microphones and instruments!
Doesn't it make you want to play some music?
And Kristen even took us to visit her horses afterwards. Such a fun day!

Monday, April 10, 2017


Ever since I was in high school, playing in a percussion ensemble of my own, I have loved going to the BYU Percussion concerts, and I've always wanted to take my children to one! The college has added a group specializing in Eastern music since I was there, and that is really strange and interesting (though the regular Percussion Ensemble is still my favorite). The steel drums group, Panoramic Steel, is always really fun too.

So, we made sure to schedule a field trip to the "Evening of Percussion" concert during this unit. We loved it! And the children were using my mallets and drumsticks to drum on everything for the next few weeks…but that was inevitable, of course. :)

A few other percussion-related resources:

This is an interesting video about a day in the life of a symphonic percussionist

Demonstrations of how to play African log drums.

We looked up videos of pretty much every percussion instrument on YouTube, just so we could hear what each one sounded like. It's interesting to hear the difference between a marimba and a xylophone, for example, or glockenspiel and celesta.

Here's a sample of a piece written for water percussion

You've probably heard of this percussion group called "Stomp." They create percussion music with all kinds of "junk" like garbage cans and brooms, and with their bodies too. We watched a couple videos of this and the children liked it. (I played a percussion piece in high school where we just clapped, drummed on our knees, stomped, pounded on our stomachs, etc. to create the music, and I thought it was the coolest thing ever!)

Have you heard this piece by John Cage for prepared piano? So weird and cool. I've always wanted to play something for prepared piano.

And of course, there's also Cage's famous piece 4'33", which consists of 4 minutes and 33 seconds of just…silence. Or rather, all the ambient sounds—people coughing, programs rustling, etc—ARE the music. It's one of those avant-garde concepts that cause lots of arguments about "what is music"—but you can't argue that the idea is interesting! I've always thought it would be fun to hear this one performed live.

Carl Nielsen's 5th Symphony has a really cool snare drum part—the snare drummer is basically directed to "fight against" the conductor of the piece in one section. The drum part calls for wild, ad-libbed drumming, even playing in a different time signature than the rest of the orchestra, and without regard to what the rest of the musicians are doing. It's a symbol of war and chaos. Eventually the drummer is "defeated" by the rest of the music and goes offstage, still playing. You can read descriptions of the piece here and here. And you can listen to it here (for that crazy snare drum part, start at about 15:40)

And here is a video of the children drumming on the couch and other things. They really love doing this and they love watching videos of themselves doing it. :)

Wednesday, April 5, 2017

Field trip: echoes and pyrite in Ophir Canyon

One of the things I found most interesting in this sound book I read was the way the author talked about listening—really listening—to the sounds around us. He talked about how different places in the world have distinct sonic characters in the same way they have distinguishing visual characteristics, and he described having his students go on "sound walks" while blindfolded, so they could experience a place acoustically, kind of like you'd do a "nature walk" to see birds or something. This seemed like the coolest idea to me! So we tried it in various places: near a busy construction site, in our neighborhood, in a downtown area, and then in a more remote country area by my friend Cathy's house. The sounds in each place were so different! It made me think about how much the sounds are part of the experience when we go camping, or hiking. It's so peaceful to be somewhere where all you hear is wind and birdsong!

While we were in Tooele County, we went to a place we'd been wanting to go: Ophir Canyon, where our rockhounding guide assured us there is pyrite to be found! We always welcome the chance to find cool rocks, and this was a really easy site because the roads getting there are all paved, and you can find all kinds of pyrite just in the pile of mine tailings by the road!
Teddy got one of the rocks and walked around talking on it like it was a phone. Very businesslike.

And, as an added bonus for our Sound Unit, we discovered some great places to hear echoes in this canyon! You can hear them in this video:

Monday, April 3, 2017

Anechoic and Reverberation Chambers field trip

When I was little, my dad would sometimes take me over to the Science Building where he worked at BYU, and show me all the coolest things: the top of the pendulum, the giant ground sloth skeleton, the wave machine, and best of all the anechoic chamber. I LOVED going into this room where there were no echoes, no outside sounds—only the most silent, muffled air I'd ever experienced. And I would have given anything if, for this field trip, I could have just called up Dad and asked him to get out his key and go with us to the anechoic chamber again! But…now that he's gone…we had to go through the regular channels. And it wasn't too hard: you can just sign up for a tour here at the BYU Acoustics Outreach page. On the night we went, we were the only people in the group, so it was great.
The anechoic chamber has been remodeled since I was young: back then it was all made of yellow insulation, and the foam pieces weren't quite so aggressively triangular! So it was cool for me to see this updated version. Our tour guide was really knowledgeable and answered all the children's questions with great patience. (The little ones were kind of nervous about the wire mesh floor, and I remember feeling just the same when I was young! It feels very precarious. It's actually strong, though—they can put a grand piano on it with no problem!)

My only regret on this field trip was that I didn't get to walk around yelling and shouting with as much wild abandon as I felt like I could when I was there with my dad. :) And I wish I had thought to make a recording while we were in there! But, never fear: here is a recording made in another university's anechoic and reverberation chambers which will give you the idea.

Another bonus was that, unbeknownst to me, BYU now also has a reverberation chamber, which is basically the opposite of the anechoic chamber. And that was really cool too!
You can see all the hard angled surfaces they have hanging above the floor, all to increase reverberation.

The most amazing thing in this room was the demonstration our guide gave us of standing waves. He turned on a loudspeaker that put out a loud, low sound, and then we walked around the room listening. Because of the reverberation, the waves reflect back on themselves, and that means they sometimes make nodes, or places where the peaks and troughs of the waves actually cancel each other out. We had understood this in theory, but experiencing it in real life was really striking! You'd walk around, wanting to cover your ears because of the loudness of the sound, and then suddenly you'd come to a spot where the sound just…dampened. It became almost soft, as if you'd covered your ears or walked into a different room. And those places were the nodes. We loved this!

I didn't record that phenomenon, but here is a short sample of how a voice sounds in the reverberation chamber: 
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