Tag: audio

Posted on
by

The daily create from today/yesterday was Create an audio of two sounds not normally heard together. I took two sounds that I had recorded for the UK Sound Map on Audio Boo. The result is:

While I don’t think the result is particularly creative or interesting I though the workflow was worth recording.

  1. Easiest way to download the mp3s from AudioBoo was to switch to the RSS feed in safari and right click the MP3 link and choose save as.
  2. Open One file in audacity.
  3. Import other file with File -> Import ->Audio…
  4. Fade out the first sound, as the second was so quiet in comparison I just left it in place. Deleted the section of the first track after the fade.

Busker to Beach Audacity 440

Bonus Image Merge

As Both AudioBoo, the source of the sounds and SoundCloud, where we were to publish the results, allow you to add a photo I thought it might be interesting to create an image fade to go with the audio.

Here is the recipe I used:

Opacity Gradient

  1. Open first AudioBoo page in Safari, view the larger image.
  2. Drag image onto FireWorks on the dock.
  3. Open second image and drag onto the first image in fireWorks
  4. Drag a rect in fireworks over the second image.
  5. Make it white and give it an opacity gradient.
  6. Select the gradient Layer & the Image below.
  7. Modify Menu->Mask -> Group as Mask
  8. Adjust the opacity of the masked image so that the image below shines through.

Busker to Beach Firworks 440

The whole process was pretty quick which is quite important as I try to keep up with the daily create.

Posted on
by

I though with the previous post I’d finished blogging for the year, but this is too good to keep.

This morning firing off the EDUtalk bot brought in a couple of new podcast episodes one from iPadio and one from AudioBoo.

I is always interesting seeing what comes in to an open invite and the flow of posts on EDUtalk comes and goes, some times a trickle and occasionally a flood, I didn’t expect much over the holiday period.

The two posts today are both interesting and exciting in themselves and as an indication of a couple of recent branches that have developed on EDUtalk.

Hack Rap by Alan O’Donohoe

One Hack Rap by Alan O’Donohoe (teknoteacher) is a rap boo to attract pupils to computing, Alan has a great series of boos about introducing programming to pupils. His mission to TEACH COMPUTING not secretarial skills. Alan is Co-founder of the very exciting Hack To The Future. This hacking theme has been popping up fairly frequently on EDUtalk,for example Talking #Hackasaurus with @iamjessklein at #HiveLondon #MozFest by Doug Belshaw and a lot of Leon Cych‘s edutalk input. Leon has been one of the major EDUtalk contributors and posting a ton of fascinating eduhacking stuff there and on the Learn 4 Life site (where Hacking, mentoring and rapid prototyping as new models for learning is one of my favourites).

MAT4ESL iDeaCast 04 by Scottlo

MAT4ESL iDeaCast 04 by Scottlo this is Scottlo‘s second contribution to EDUtalk. The phlog has bee echoing round my brain all morning lots of exciting ideas for all sort of things. The Scottlo Radio Blog comes from Japan, Scott is a contributor to DS196 and involved in ds106 Radio which of course provided inspiration and instruction for Radio Edutalk. David and I have been starting to plan with Scott about possible collaboration between Radio EDUtalk and ds106 Radio.

As I blogged a couple of posts ago, I am going to try joining in with ds106 after the new year, it looks like leading to some very interesting places.

Both of these posts link nicely, in my mind, both linked deeply to ideas of hacking education both philosophically and practically. Hack To The Future has the same spirit as the mashup culture of ds106. I really hope we can get most of this in 2012.

I’ve deliberately not embedded the audio here but I hope lots of folk go to EDUtalk and have a listen.

Posted on
by

Since the last post (Show notes without a Show Radio Edutalk episode 2.5) we have taken a few more baby steps over at Radio Edutalk.

A week ago, I attempted a chat with Iain Hallahan over Skype. I basically started up Nicecast, and hyjacked the Skype audio. I’ve now figure out that if I just hyjack the one channel I don’t get the echo problem we had earlier. Settings Screenshot.

Iain talked about TeachMeet Beyond and kicking off TeachMeet 365. I think the chat went really well due to his enthusiasm about some facination projects, the audio is archived as an episode of Edutalk: Iain Hallahan on Radio Edutalk

Last night David and I tried a variation where we invited folk on twitter to come in over skype for a chat. Stephen Reid and Joe Dale kindly obliged talking about podcasting. We had a bit of bother getting them into a conference call via the dial in, but David pulled them in via their skype accounts. Stephen was on the move and joined in via 3g on his iPhone keeping our EDUtalk strapline, Audio publishing by educators, using mobile devices accurate. Again the audio is archived: Radio Edutalk 24 November 2011.

After we finished Joe gave us a wee hand sorting out the dial in stuff, in the future people will be able to dial in using any phone to 0131 208 1084.

Workflow

So we seem to be getting a workflow together. Last night it worked well with David figuring out the skype bit and myself the nicecast end. Due to space at home I was using my mackbook in my daughter’s bedroom rather than hooked up to the monitor in the living room, keeping Skype, it’s chat window, twitter and nicecast organised was a wee bit tricky. The week before having the living room and larger monitor made it a wee bit easier.

I am also beginning to understand some of the difficulties in handling live multi voice conversations. An increasing number of podcasts I’ve been listening to have had more than one presenter or voice. This makes, for me, interesting listening, but there is a bit of a learning curve, which I’ve just stared on, in doing this smoothly.

The audo quality seems to be pretty good, I am using a cheap usb mic, but hope to get a better one sometime soon.

So far we having been using Nicecast, but I’ve also downloaded a free application LadioCast which might do the same job, I need to do some tests and see if it can archive.

The other 167 hours

The rest of the week Radio Edutalk has been streaming random items for the Edutalk archive. I had also set up several Scheduled playlist, to play at 7:30 in the evening, unfortunately I’ve been away for a few days and didn’t tweet these out as I’d planned. I hope to try the same again over the next week and also try djing audio for he archive giving folk a chance to phone in at some point.

I’ve taken out a 500mb AutoDJ disk which hold the archive, it is already filled up. I don’t really want to pay for a bigger disk, a monthly charge, so the choice is some manual shuffling via ftp or perhaps changing bit rate from 128 to 64. The later would involve converting all of the files and getting the internet radio folk to change the settings for the stream. I am not sure how much the change would effect the quality?

Listeners

As yet we have not had a lot of listeners, but I’ve found myself listening in to the random stream more often that I thought, it makes interesting listening and can spark off all sorts of ideas.

Odds and ends

I’ve been collecting various internet links using linkli.st internet radio · linkli.st a failry new service that makes creating list of links very simple. I love the way you can create bookmarklets for any of your links screenshot.

I also use Storify to curate some tweets for last nights broadcast to include with the show notes: Radio Edutalk 20111124 · johnjohnston · Storify, Storify is easy to use and looks useful.

Next Wednesday

David and I will be talking at around 8 o’clock and the lines will be open, if you are online have a listen and if you like dial in (0131 208 1084) to put in your tuppence worth. Given the date I presume we will be talking strike along with some general eduTalk and edTechTalk.

Posted on
by

Radio Edutalk has been up and running for a week or so now. We had our first attempt at a live skype last Wednesday (archive). This was not hitch free as I messed up the settings making my audio echo, David on the other end of the Skype call and an iTunes track or two seemed fine. I think I know how to fix it.

The listener numbers have ben low with 45 unique listeners. We peeked at 6 at once. This is fine, it might build up a wee bit over time. As I mentioned in the previous radio post, it is not about numbers. The low numbers will also make it easier to keep the radio turning over 24 hours a day. The current plan is:

  1. A general random rotation of over 100 files from the EDUtalk archive most of the time.
  2. An hour of themed audio from 7:30 – 8:30 most nights (programmed by myself at the moment).
  3. A live hour at 8:00-9:00 on Wednesdays from David and myself, hopefully with some phone ins & scheduled guests.
  4. I’d also be interested in “DJing” some of the audio in some sort of theme as an alternative to the autoDJ and in the longer term we would be interested in others having a go. We are also open to adding to our pile of audio files, so if you or someone you know has some interesting audio please get in touch. I guess we could also add any suitable licensed material…

Hopefully you might find something of interest if you dip in to the stream in, perhaps as you do some marking or prep.

Posted on
by

Radio edutalk

Edutalk has now been running for over 2 years, we have published over 300 pieces of educational audio. These vary from TeachMeet recording, through to personal reflection by way of pupil podcasts. Hopefully theses provide interesting and educational listens.

One of the things that David and I talked about when we started EDUtalk was issuing a CD rom of recordings, this would perhaps have helped to keep older, still valuable, audio playing.

One of my thoughts about podcasts is that older episodes get forgotten about in a way that old blogs posts, through searching, do not.

REcently I’ve been reading about and listening to ds106 Radio and Stephen’s Downes’ Ed Radio. These are Internet radio stations. My interest was also stimulated by my daughter who is currently doing some pro bono work for Airing Pain « Pain Concern a podcast and internet radio.

I’ve alway believed (and gone on about) one of the benefits of podcasting over radio is its asynchronously. The potential audience for internet radio would seem to be less. A few things have made me think again:

A comment on Stephen Downes – Google+ about ED Radio:

That's the intent of Ed Radio, it's not something you really focus on, it's more background where you listen while you work & where something may or may not catch your attention.

Somewhere else, Stephen wrote about the interesting challenge of broadcasting to no listeners. Can’t find the quote at the moment.

on broadcasting to radio #ds106 | D’Arcy Norman dot net

How does the ability to instantly broadcast live audio to a group of people impact what we do? How does this instant synchronous connection effect the sense of social presence? And how does having to make the decision of streaming vs. recording effect the experience of sharing?

I’ve also been impressed by the quality of internet radio when streaming to a phone on g3 as well as wifi. So we though we would give this a go

How to

There are various posts on the how to set up a station but I basically went to Internet Radio Servers and set up an Icecast server on pay as you go. I then followed CogDog Guide to Nicecasting – CogDogBlog to test Nicecast. You can use Nicecast to broadcast from iTunes or a mix of iTunes and voice or even iTunes, voice and Skype. You can use Nicecast for an hour at a time for free and pay when you have tested it. I am using it on test mode at the moment. I have also tested the AutoDJ set up, where the station just streams from a set of mp3 you have uploaded via ftp. this seems to works well. Instructions on Internet Radio Servers are straightforward.

I’ve briefly tested Papaya Broadcaster a £2.99 iPhone & iPad app this seem to do the trick. allowing you to broadcast on the move.

A Plan

The costs at the moment £5 a month to host the AutoDJ files and £5 per 10GB broadcast. I am figuring with only a few listeners it will only be £10 a month to broadcast for an hour or so each night, using a variety of sources.

We have a few loose ideas of what to broadcast:

  • Broadcasting sets of audio from the Edutalk Archive on AutoDJ 7:30 to 8:30 each night. The hope is that folk will have it on in the background listening for serendipitous educational audio. I’ve not really worked out the queuing of the audio but will select some and mix then up every day or two. So far I’ve downloaded and converted to the correct samplerate & bitrate over 60 files.
  • Once a week on Wednesdays David and I will attempt some sort of skpye in show where folk can skype in for a chat, we still have to test this. This can be recorded and fed back into Edutalk as a podcast.
  • Curated sets from the Archive, using nicecast and iTunes, possibly opening it up to guest hosts.
  • Live event broadcasts, for example from a TeachMeet using Papaya Broadcaster.
  • Anything else we can dream up or is suggested…

Tech Tips (for geeky teachers)

It seems that you need to use files that all have the same sample rate, bitrate and number of channels. I’ve started off with 60-70 files downloaded from Edutalk , the problem is these do not all have the same sample rate, bitrate and number of channels This can be dome by opening and exporting the files from Audacity, or exporting them from iTunes. This could take quite a while. A quick google found a script for the Lame lib (That is used by Audacity to export mp3s), You need to instal Lame so that it is available for command line use, this sort of stuff can be daunting but worth it as a time saver.

What I did was open the Terminal, navigate to the folder full of mp3s (on a mac you can type cd and then drag a folder onto the terminal window), then you just put this int othe terminal window and hit return:

mkdir save && for f in *.mp3; do lame -m m -b 128 –resample 44.1 "$f" ./save/"${f%.mp3}.mp3"; done

What that does is make a new folder save inside the mp3 folder, then use lame to convert all the mp3s in the folder into new files in the save folder that all have a bitrate of 128, a sample rate of 44.12 and are mono files. Well worth doing if only to avoid having to see asave dialog 60 times.

How to listen

between 7:30 and 8:30 head over to Radio Edutalk – EDUtalk. A flash player should start when the page opens. There are also buttons to listen with winamp, Windows Media player, Real player or QuickTime. Hit the title song to open in iTunes.

I’d love to hear what folk think, ideas for broadcasts or cc licensed audio that could be played.

Posted on
by

I’ve been dipping into the stream of fun and information on the University of Mary Washington New Media Center Digital Storytelling Summer of Oblivion online course. Organised by Jim Groom it would be pretty hard to describe but it is producing lots of interesting stuff. A great way to spend a lot of time following links to posts that range wide.

Among the various weird and wonderful posts I found a series of website/blogs from the University of Mary Washington New Media Center which give a good introduction to basic Digital Media Tools:

I’ve also created a la list of these links on linkli.st: Digital Media · linkli.st. linkli.st is a service that make it easy (bookmarklet) to create & curate lists of links.

Update (a couple of hours later): I just found a wiki I put together last year covering some of the same ground: Digital Media.

Posted on
by

River Tales

I am listening so some great pupil podcasts on Mr O’D’s class posterous pupils take on the role of a river and tell their life story:
Rachael does Rivers and
Kyle and the Nile for example. They show, in my opinion, the power of mashing up subjects and reinforce for me the value of podcasting and the voice.

Regular Gems

The User Outcomes section of Doug’s new Synechism Ltd. blog is turning up some nice stuff, this week’s gem for mac users is One Thing Well A weblog about simple, useful software.

UK Sound Map

I didn’t realise that the great UK Sound Map project was limited to a year and read:

The final date for uploads to the UK Soundmap is Friday 24 June, 2011. No new recordings will be added after then, but the UK Soundmap will remain online and you’ll still be able to listen to its collection of sounds.

I really meant to add a boo from work yesterday but got caught up in other things. There is a fair racket as the school, behind which I work, is being renovated. I had a good time contributing to the map and felt quite sad to learn it had finished. Visit the SoundMap and enjoy listening to sounds.

Listening to more podcasts

I’ve been listening to more podcasts recently thanks to Instacast. I’ve removed podcasts from the iPod app of my phone and don’t sync them via itunes anymore. Instacast allows you to build subscriptions (I imported from the iPod app before stopping the sync) and download episodes without being tied to a computer in a much simpler way than the ipod app. I can now sync my podcasts at the office before the drive home, rather than noticing that I had forgotten to sync my phone from my computer at home.

Instacast allows you to see the episodes you have downloaded, and also stream new ones. This can lead to a hammering of your data allowance.

I am presuming that with iOS 5 that apple will have some sort of similar setup too. It is certainly the way I want to go with mobile stuff.

The interface of instacast is nice, very minimal, although the text is a wee bit too small for my eyes at any distance. Well worth £1.19 even if Applce come up with something as good in iOS 5.

Islay high School

Joe Wilson blogs about Islay High School a reminder of all the great work going on there over the past few years. Good to be reminded that it is not the tech:

Beyond the technology they timetable 3rd to 6th year together – which leads to a great community feel in the senior school. This allows for personalised timetables over 3 or 4 years – this gives learners a large range of academic and vocational options and allows some to really stretch themselves – a few 5th years have achieved Advanced Highers.

Posted on
by

On Friday evening I went along to the evening presentation and discussion part of this event. There had been an afternoon training workshop on the practicalities of field recording run by the evenings presenters which was limited in numbers. My attention to the event had been aroused by a tweet from @scottishmusic I guess because I post the odd recording to the UK Sound Map. The evening was a little bit different from the educational conference/teachmeet meetings that I am more likely to be found at but I am really glad I went.

Tim Nunn

The first presentation was by theatre maker Tim Nunn of the company Reeling & Writhing (404 Archive link). He spoke about his work in progress Formel, inspired by Chaucer’s Assembly of Fowls the play uses field recordings extensively. Tim spoke about how he wrote the play working back and forward between text & field recording each affecting the other. A lot of the sound was recorded on Islay and he played us fragments of a force 10 gale and rooks mobbing an eagle. Here is a taste of the play I found on the Formel page

‘Formel’ by Tim Nunn, trailer by timjnunn

Tim mentioned RJ McConnell (site gone, archive link) as the person behind the sound of the play, whose blog will take you in other interesting aural directions

Formel has had a couple of preview performances and is due to be on tour at he end of this year or the start of the next (as far as I picked up) and is certainly something I would like to go along to.

Timothy Cooper

Next we heard from Timothy Cooper Timothy let us here kaktos the sounds of this were made by plucking of cactus spines. He showed us Postcards from blast beach which featured photos by his father and sounds recorded and edited by Timothy. A quick google found the video on My Space.

Next he played Skate ‘n’ Shuttle/Roll and Smash:


Skate n Shuttle/Roll and Smash by tim_bo

As someone who is as musical as a turnip I can’t really comment on the work, other than to say I enjoyed listening to it. The Blast Beach images & sound was interesting in being a very much polished combination of photos and edited found sound. As someone who takes phone photos and records the odd sound when out and about it shows where the idea can go give a deal of talent in photography & music.

Ian Rawes

Ian Rawes spoke about several sound map mashups. Starting with his own London Sound Survey which features London maps, ambient sound recordings, sound maps, local history & London wildlife. This is a site to get lost in, the quote on the front page Perhaps the most ambitious and comprehensive approach to sound mapping I’ve yet to see . . . an all-around wonderful site! (from Jim Cummings, Acoustic Ecology Institute) rather understates it! Ian is the Vault Keeper at the British Library sound archive (I think). Ian briefly showed us round the London Sound Survey playing recording of a street preacher (there are quite a few) and a Common Pipistrelle bat recorded with a Magenta heterodyne bat detector set to 45 kHz and Edirol R09-Hr digital recorder which gives you an idea of the range of the site if not the depth. He also showed us the London map with present-day streetmaps, historical maps and sound recordings.

Ian is also the person behind the UK Sound Map , I’ve blogged about this before and contributed a few boos to the map. what I love about the project is the fact that it is open to anybody to contribute, it is easy to do so and it mashes maps & sound.

We then saw the Acoustic map from 12 Gates to the City The acoustic map is an ever-growing collection of 1 to 5 minute sound recordings embedded on a world map at the exact location of each recording. created by Jonathan Prior, an Edinburgh-based creative researcher, who was sitting in the audience. Johnathan’s map is interesting because it uses UMapper rather than google maps, it looks and sounds good. We heard the underwater recording of periwinkles grazing on algae which sound nothing like you would expect. It looks as if there is a lot of interesting stuff on 12 Gates to the City.

The Inukjuak Sound Map is another map sound mashup this time created by Montreal sound artist Nimalan Yoganathan. The map has cultural and natural sounds, some with images. It uses google maps. We also watched Charles Veasey’s Hmsg Spiral Map which I had seen before, but it was interesting watching with other people on a large screen rather than in one’s own home with multiple on and offline distractions. The Hmsg project is a flash/video/google maps mashup.

One of the main impressions I got from the event was the quality of the audience’s listening, this made the evening quite quiet and contemplative, quite different from, say, a TeachMeet or educational tech event. I had not taken a laptop or ipad to take notes, but if I had I would not have used them, I didn’t take any photos either although I had a phone with me. In googling the links for this post I re read Inukjuak Sound Map and Hmsg Spiral Map on Ian’s London Sound Survey blog:

The Spiral Map looks and sounds very impressive as it progresses smoothly through its 30 different sound recordings and videos. Most of the videos have very little motion in them and much more action is heard than seen. It’s a great way to set a balance between the ravenous eye and the patient ear.

Educational Takeaway

I came away straight after the event, an empty stomach and dinner waiting kept me from the pub, with open ears, walking to the train station listening more than usual. At the station I was surprised that the announcement and the clicking and clacking of the high heeled shoes were louder than the train.

I’ve also been thinking of how this could relate to the classroom. Here are some ideas off the top of my head:

  • I’ve often used photos and sometimes video as stimulation for creative writing, following Tim Nunn we could add recordings as a great stimulus.
    Children recording sounds from a trip as well as taking photos and videos could be an powerful addition to stimulate writing and discussion back in the classroom. I’ve also had children record poetry with backing music, perhaps found sound could be used as well.
  • I’ve often involved pupils in creating movies from still pictures adding their voice with iMovie. It could be really interesting to add recordings Timothy Cooper style I think some children could be excited in working this way.
  • I’ve been building picture and gps map mashups for a while now, occasionally incorporating audio and recently mapped my boos this could easily be adapted for a school trip or for a collection of schools to work together. Or perhaps schools could contribute to UKSM itself. Playground sounds across an authority or skipping songs could be a starter.

Technical

In the afternoon workshop there had, I think, been a lot more technical information. Ian provides a Budget binaural stereo microphones guide on London Sound Survey. A lot of the Field Recording crowd seem to know what they are talking about kit wise, I was somewhat relieved when Ian appropriated the Best Camera quote: The best microphone is the one you have with you.

In talking about UMapper, Ian said it was in some ways easier to use than google maps. This is probably right, but I like the way google maps can be use to auto update, using the api, so that things are added without automatically, without crafting

More Takeway

Finally what I’d take away was the quality of listening shown by the audience & presenters. The time taken. Timothy Cooper’s Blast beach gave plenty of time to look at the images: audio can be slower. I am thinking again about Ian Rawes’ “the ravenous eye and the patient ear”, Tim Nunn’s theatre performances in the dark.

From the above you can see I’ve gathered a great number of links, sites not only to visit but to revisit. It is not often you get the chance to hear periwinkles eating.

Posted on
by

An interesting crowd sourced data project UK Sound Map answers the question: ‘What does Britain sound like?’

All you do is record some sound with Audioboo and tag it uksm the boos are moderated and added to the The UK SoundMap. This, of course, reminds me of our EDUtalk project.

Discussing social media and this sort of thing with my daughter Christine we recorded a quick boo of the rather quiet traffic outside our flat.

Listen!

This could be a nice classroom activity for iPhone equipped teachers and I intend giving it a wee try next time I am working with a class, perhaps a playtime recording would be a good idea.

Posted on
by

SconicPics is an iPhone/ipod touch application that allows you to create custom slideshow movies. The movies are made from still photos which you can add from the photo library or take with the iPhone’s camera. You can then narrate a voice over and create and enhanced m4v video with chapters.

In this example I’ve just used some pictures from classrooms I’ve been teaching in recently. It only took a few minutes to create and I am sure taking a little more time would have produced a more professional result and few plosives. I exported the 4v to reduce the size which removed the chapters too.

This looks like it could be a useful app in a classroom equipped with iphones or iPod touches. With touches pupils could use images downloaded from webpages or screenshots.