Here are the 2 hours of #SLTeachMeet from Tuesday 23rd May 2013.
1st Hour
If you can't see the video on your device click here:
http://www.youtube.com/embed/v2k5UAr8fhM
2nd Hour
If you can't see the video on your device click here:
http://www.youtube.com/embed/XCocT8J-lKY
If you are pressed for time then listen to the broadcasts instead on Read more
This blog entry is to complement the video A short film about sound I made on April 2nd 2013 for #TeachMeet #Ukedchat #TeachTweet Session 147.
Because of the limit of 5 minutes, the film could only lightly skirt the theory and process of doing voiceovers. This blog entry augments Read more
Details of all the paper and text resources to follow later - in the meantime - here's the podcast on AudioBoo:
http://audioboo.fm/boos/1348250-l4lnews-23-04-2013
and on Read more
I have now put all the 26 L4Lnews broadcasts in one playlist - I'll be adding to these with a full searchable index later in the year as part of building searchable data that can be extracted from the broadcasts so I can reference them and for academic research Read more
Here's a quick mindmap of the main points in the £3500 Fund teachers can apply for - I find it useful to make a mind map of various government initiatives now and again - there is a link to the original PDF as well. Hope it's useful. Just click Read more
Access this week's show at:
SOUNDCLOUD
https://soundcloud.com/l4lnews/l4lnews08-03-2013
AUDIOBOO
listen to ‘L4Lnews-08-03-2013 ’ on Audioboo(function() { var po = document.createElement("script"); po.type = "text/javascript"; po.async = true; po.src = "http://d15mj6e6qmt1na.cloudfront.net/assets/embed.js"; var s = document.getElementsByTagName("script")[0]; s.parentNode.insertBefore(po, s); })();
http://audioboo.fm/boos/1316777-l4lnews-08-03-2013
MIXCLOUD
http://www.mixcloud.com/L4Lnews/l4lnews-08-03-2013/
ARCHIVE.ORG
Different audio formats archived at:
https://archive.org/details/Learn4LifeNews08-11-2012_670
For those of you who prefer reading you can access the Licorize booklet at:
http://licorize.com/projects/3yebeams/L4Lnews08-04-2013
The transcript Read more
I'm really pleased so many teachers and pupils are making their own videos now but there is one thing that people always cut corners on - and that is sound quality.
It doesn't take much to make the sound on a video much, much better; here's a little (squashed!) Read more
From this week we'll be introducing a weekly newsletter informing people of all the new developments on the Learn 4 Life blog and media site.
We'll be using the tinyletter site to do this as it is unobtrusive and leaves a small footprint but a well-defined archival trail for people Read more
DIGITAL MAKING REVIEW
Recently I was lucky enough to be asked by the Nominet Trust to Livestream/post produce films around the discussion involving Julian Sefton-Green's review for them - Mapping Digital Makers - a review exploring everyday creativity, learning lives and the digital.
Unlike the recent iPad Review launched by London Knowledge Read more
Over the last year I have been working towards building a series of specialist media channels for L4L.
In the last decade I have recorded many, many hours of interviews on video, tape and digital recorders.
I have given up on mainstream media championing the cause of grass roots teachers' CPD Read more
Here is an ongoing blogpost about the #PedagooLondon event held at the Institute of London last Saturday.
Here is the playlist of interviews I did with various participants before and after the meetings.
One of the things I was hoping to tease out of people was the difference between #Pedagoo and Read more
Last night I had the pleasure of broadcasting the audio for TeachMeet London at Walthamstow Academy. I have to thank Kafilat Agboola and Dave Clark for access to the wonderful sound system that made it all possible.
I also managed to interview several people before, during and after the event Read more
People have asked me about the dark arts of live audio streaming and the kit I use with iPhone and iPad to do it.
Here are the specs.
1)Mixlr
First off I have a professional subscription to Mixlr - this is about £4.99 a month (Feb 2013 at the time of writing).
This Read more
What is on the L4L iPhone App - look at this 2 minute video to find out:
If you can't see that on your device click here:
https://www.youtube.com/watch?v=KVJ19b60zVY
The App is free - download it from Read more
Last month I went along to the iPads in the Classroom event at the London Knowledge Lab. It was a dissemination of the summation of "research" about the use of iPads in the Classroom.
Despite the various studies I am still unconvinced about wholesale use of iPads in classrooms. For Read more
Here is the Storify from tonight's #TeachMeet online called #WonderAcademy.
The two presenters tonight were:
EduTronic - Christopher Waugh
and
Kevin Bartle
[View the story "#Wonderacademy The Twitter academy online" on Storify]#Wonderacademy The Twitter academy onlineStorified by Leon Cych· Wed, Feb 06 2013 14:12:01Christopher WaughRT @Wonderacademy: Welcome to #wonderacademy, let's Read more
For the first time in six years, that I know, I have been publicly affronted on twitter.
Who did this thing and what did I do to deserve such overt vituperation?
Well - it was the MP Douglas Carswell to be precise.
He posted this tweet on Saturday 5th January 2012:
Without giving Read more
I have made a film for Vital's edfutures.net:
http://edfutures.net/
You can see the film below and the transcript below that. Please share this film with your colleagues to widen the network.
Online Teacher Communities (function() { var scribd = document.createElement("script"); scribd.type = "text/javascript"; Read more
Here are the 2 hours of #SLTeachMeet from Tuesday 23rd May 2013.
1st Hour
If you can't see the video on your device click here:
http://www.youtube.com/embed/v2k5UAr8fhM
2nd Hour
If you can't see the video on your device click here:
http://www.youtube.com/embed/XCocT8J-lKY
If you are pressed for time then listen to the broadcasts instead on Read more
CC BY-NC 2.0 licence – source http://www.flickr.com/photos/eknathgomphotherium/
This blog entry is to complement the video A short film about sound I made on April 2nd 2013 for #TeachMeet #Ukedchat #TeachTweet Session 147.
Because of the limit of 5 minutes, the film could only lightly skirt the theory and process of doing voiceovers. This blog entry augments the film with further detailed references and resources around the topic so people curious about the process can take it a little further if they have the time, inclination and money.
Bear in mind audio kit is getting cheaper and cheaper as more and more independent film and podcast makers are taking up the challenge of going online with their own media. I have had to update prices twice when making the film they have dropped so much in the interim.
I am by no means an expert but have picked up some of these tips over the years; I hope you find them useful for making your own media. There are links to online resources at the end of the blog. I have aggregated, collated and archived links to films and webpages dealing with topics around film and sound in a lot of detail. The information is there if you wish to take it further.
Although this is advice specifically for making voiceovers for TeachTweet videos, some of the sound techniques and equipment can be used to capture better quality film sound generally.
The film below deals with the use of some of the microphones and kit I mentioned in the last TeachTweet discussion online. Someone suggested I make a presentation about microphones available and how to record better sound. The film and this blog deals with some of the ideas underpinning ways in which to record better sound on presentations. I hope you find it useful.
THE BASICS OF SOUND AND MICROPHONES
Basically microphones are instruments that capture acoustic energy and turn it into another form of energy (electrical). Some are better at doing this than others!
They turn sound from an acoustic into an electrical signal. Mics are one kind of transducer – a transducer is a device that converts a signal in one form of energy into another form of energy. Sometimes the conversion isn’t very good and the ‘signal’ needs a boost.
Mics increase the power of the acoustic energy, converting it into electrical energy. Then using electronic circuitry the computer converts this electrical energy back into physical energy via sound processors and then through speakers and headphones. These come out in the form of sound waves.
COMPUTER MICS AREN’T THAT GOOD
Some”built-in” mics in computers are not very good at doing this so you’ll have to boost the signal in some way without boosting the “noise” along with it. There are several inexpensive ways you can do this…
BOOSTING SOUND ON THE CHEAP
Get close to the microphone
PROXIMITY – GET CLOSE!
The strength of the signal may be boosted using proximity. Bring the mic close to you – if you can’t then you, go to it.
Recording a voiceover is not as difficult as trying to record someone walking around the room, where they often wander in and out of microphone range, so make it easy on yourself; get as close as you can to the microphone without making the signal distort or “clip“.
COMMON MISTAKES
This is the most common mistake that people make when recording a voiceover. They sit too far away from the computer’s inbuilt mics and the sound is tinny and echoes around the room or there isn’t a strong enough signal and too much background noise intrudes on the soundtrack giving that marvellous WWII retro London Calling feel to it.
So even if you increase the gain you get a louder hiss or hum. This may be acceptable for what I call “process” audio (i.e. audio or video that just captures what people are saying and not designed to sound like a hollywood film or TV) but this won’t do you (or your audience) any favours if you are trying to record a clear signal for a voiceover.
Your ideal is to capture clear and ‘easy to hear’ audio. Good signal and not so much noise. People’s hearing changes with age – I am blessed with extremely good hearing for my age – my frequency range is quite wide. Bear in mind new Loudness guidelines are being introduced for professional broadcasters.
WRITE A SCRIPT FIRST
Unless you are very talented and good at off the cuff, ad-hoc speaking then write yourself a script before recording – then put it into something like the free “cue prompter” online; then read it close to the mic! It makes all the difference.
Once you have done this then you can always adapt it later and use it as a basis for timings for images, animation or video you might want to edit together. I really like the iAwriter App – because, besides being synched to all my devices and computers, it tells me how long how many written words are in terms of time.
iA writer has a "Reading Time" option.
You can hear, and see the difference of proximity in the film below. The only equipment I used was the free software program Audacity and a laptop. However I changed a couple of things to make the sound better each time. Look at the waveforms as well…
Of course the drawbacks to this are that the laptop may well overheat – you’ll be short of air and the recording you’ll get will be more towards the “bass” side of things so not so balanced – it may be richer but maybe not to your taste.
Once you start to get picky about the sort of sound you record then it is time to examine using different types of external microphone.
GOOD VOICEOVER/ PODCASTING MICS FOR EVEN BETTER SOUND
AudiaTechnica ATR2100
The microphone I mentioned in the last TeachTweet ukedchat discussion was the Audio Technica ATR2100.
It is a cardiod microphone – i.e. one whose cardioid polar pattern reduces pickup of unwanted sounds from the sides and rear. Basically it cuts out unwanted sound from the sides if pointed at your mouth or if you speak across the top of it from the side. This makes it ideal for podcasting.
This has been recommended by so many podcasters and audio experts in recent months. It can act as a USB or an XLR microphone. (XLR is better quality.)
The quality is phenomenal for the price but the sad fact is that it is only available in the United States or on ebay. So you will be liable for import charges and VAT which, if buying for the school, you can claim back.
Connectors on AudioTechnica ATR2100
If you have a USB lead you can plug it straight into a desktop or laptop computer. If you want to plug the USB mic into a iPad you’ll need Apple’s Camera Connection kit.
The podcasting App used in the video above is called BossJock Studio for iOS – it’s a wonderful app.
BossJock Studio
The camera I used was a Logictech Pro HD 920 Webcam
You can use the Audio Technica ATR2100in XLR mode too but you’ll either need an iRig pre for iPad/ iPhone/ Androidor or a USB mixer for computers to get higher quality input.
Very cheap USB Mixer
WHY SMALL MIXERS ARE A GOOD BUY
The mixer has the added advantage of being able to mix in other sounds like line inputs RCA or Phono plugs from Vinyl, Tape, Video recorders, amplifiers, TVs etc. I regularly use this mixer to make better quality Skype calls. I have even used it with wireless microphones to record and relay TeachMeets in real time over the internet. The only drawback is the sound quality is limited and there are only a few inputs. If you were running a radio station you might need more for guests and other inputs. But for around £35 and dropping in price – this is one of the best buys out there!
Both the iRig pre and the cheap Behringer Xenyx302 Mixer have a pre-amp in them which helps to boost the signal from the mic. The mixer uses the computer’s power and the iRig Pre has a removable battery to power the mic.
Apple’s Camera Connection Kit allows you to connect up USB audio devices but they often have to be powered or go through a powered USB hub first.
The Procaster is another, higher quality podcasting mic used by serious internet broadcasters.
The NTG2 mic is often the one you see interviewers holding on TV – it is usually covered with a Dead Cat wind mufflerto stop the wind blowing across the mic and causing distortion. If you can ‘Boom‘ the mic as shown in the film it is very useful for recording more than one person.
Typical shotgun mic
Shotgun mics (super cardioid mics) have a very narrow directional recording window.
Supercardioid capsule pattern
Imagine a large cylinder over the mic extending six feet or more. Nothing outside that ‘cylinder of receptivity’ will be recorded – that’s not exactly how it works but basically it has very, very precise recording within a very narrow range. Excellent for doing interviews in busy crowds and therefore why interviewers and TV people use it. You often see “Boom operators” with very long extended Boom poles on Question Time.
Shotgun Microphone on a boom
Having them hang over your head pointing down makes it easier to capture the sound of someone talking from a much narrower range than on top of a camera. That’s why broadcasters get boom operator to do it. In the film I merely put it on a cheap mic stand and pointed it downwards. It gets an excellent signal this way.
I like and am willing to pay for the quality that comes from Rode Microphones – a shotgun NGT2 costs about £170 but you can get really cheap shotgun microphones for about £15 here:
I have now put all the 26 L4Lnews broadcasts in one playlist – I’ll be adding to these with a full searchable index later in the year as part of building searchable data that can be extracted from the broadcasts so I can reference them and for academic research purposes. Every broadcast I do now has a trail of data to hep build a picture of CPD activity in the UK at these times.
Here’s a quick mindmap of the main points in the £3500 Fund teachers can apply for – I find it useful to make a mind map of various government initiatives now and again – there is a link to the original PDF as well. Hope it’s useful. Just click on the nodes to get more info: