Archive for the ‘Device’ Category

Talking Book Training Notes

Sunday, April 17th, 2011

By Andy Bayor.

Introducing and training users for the Talking Book is one of the most interesting things to me. Though interesting it is full of complexities especially when one has to train varied group of people with different backgrounds in education, exposure to technology and age among other things. In view of this, one needs to adopt a general model that takes into consideration all these factors. These are my notes on my trainings and I adopted this as a general model that works very successfully.

Usually, my trainings begin with an introduction to the Talking Book and its applications and uses stressing on the context in which it will be used by the trainees. This stimulates the interest of trainees and clarify their understanding of how they will be using the Talking Book. It is also worth here telling them what the device is about and the three major things the device does – Listening, Recording and Sharing. I will teach them how to replace batteries, and the signs that will show that batteries are weak and need to be replaced among other things.

1.       INTRODUCTION TO THE DEVICE

First of all you introduce the trainees to the UI. You introduce them to the buttons on the UI and their names as been used in the audio instruction. I will randomly test them by asking the names of the buttons; mostly will check this with trainees with the least education or the most aged. I will mention a UI button’s name and call a trainee to identity it on Talking Book. The problem you might have here especially with the aged women is that they forget these names in the next stage and you will have to be patient to remind them twice or thrice before it sticks to their minds.  When the button names are on their lips

2.       TURNING ON THE DEVICE

The next thing I do is to show them how to turn on the Talking Book. In the manual it says you start with the centre button but I like to use the scenario of sleeping in a house to teach them how to start the device. I simply say when one sleeps, he sleeps in a house and if you need to wake the person up, then you will have to go to house. In the same way the Talking Book is sleeping and if you need to wake it, then you have to go to the house. I do this because, if the device was paused in the middle of a recording or whilst listening to a message and one presses the centre button again it actually doesn’t start the device but continue from where it was paused. Not starting from the house makes it difficult to locate the help menu, because the device actually starts properly when you hear welcome.

I will tell them even though you need to start the talking Book, it goes back to sleep when you are not doing anything on it for 15 seconds. I will introduce them to the next button (the centre-pause button) as the button that can stop the Talking Book from speaking but doesn’t switch it off.

** I teach them how to switch between the language especially if the device doesn’t start in the in the local language. I will tell them to press the black circle until they hear welcome in the language they understand.

Once they know how to start the device, and how to pause to eventually hibernate, I will ask them to pause all their Talking books and mostly with the help of a flip chart and a marker, I will introduce them to the concept of categories (subjects). I will draw four boxes (and name them as health, agric, education and stories) to demonstrate this. Inside each box I draw some folders and labeled them with numbers. I will now tell them that in the same way as the folders are in the boxes, so are messages grouped in the Talking Book. This makes them right away know that the messages are grouped into categories or subjects and in each category they are several messages pertaining to the category.  Once the concept of categories is understood, it’s easier for them to locate messages from categories without getting confused or glued to only the first category.

I will demonstrate this two or three times using different categories and ask them to turn on the device and move from category to category

I will leave 5-10 minutes for them to play around different categories. Immediately by observation, you will notice those that are having problems and give them special attention.

After this I will individually test each trainee to ascertain their competence in the activity. Depending on the level understanding, I will repeat the process two to three times before getting very high degree success and as well note participants that might not have picked up perfectly.

3.       LOCATING, RETRIEVING AND LISTENING TO A MESSAGE FROM A CATEGORY

We transfer the knowledge of categories here. I will pick a Talking Book and ask a trainee to tell which category he wants me to play a message from. Then I will systematically with them locate a recording from the category and play it asking them what to do at each stage from the audio instructions.  I will demonstrate the process using different categories for four times and ask for clarifications and ask each trainee to locate a message from a category of their choice.

I will allow 15-20 minutes for them to practice after which I will ask each one of the volunteers to locate a message in a named category and play it whilst the others watch. Mostly I observe some will fumble and when they suddenly stop, I will ask the other trainees what she should do next. This makes them learn from their friends and it’s usually interesting.  Mostly I will find two or three people who are confused and note them. It is easier at this stage if you have assistance from another person who can attend to those that have problems and are slow learners, who mostly pick up after a few demonstrations.

4.       MAKING YOUR OWN RECORDING.

Here I will explain to them the essence of feedback and tell them the category that is meant for feedback. Then I will demonstrate by recording my voice systematically following the audio instructions and asking them at each stage what I should do based on the audio instructions. I will make three short recordings in different categories systematically following the audio instructions with them and ask each one of them to make a recording in a chosen category. I will allow up to 5minutes and go from trainee to trainee for them to play their recorded messages for me. Here I checked again their understanding of activity three (locating and listening to a recording). I will repeat the process for everyone to catch up and give attention to those with problems until they understand.

5.       SHARING A RECORDED MESSAGE WITH ANOTHER DEVICE.

I usually will ask a trainee to record a short message in the class in a category. Then I will call another trainee with a device with a different color to bring her device, and then following the audio instructions and asking them for direction based on the audio instructions, I will copy the message to the device.  It is usually a very interesting experience since they begin to wonder how! I will demonstrate this thrice and pair them to do the same thing. I will now ask each pair to demonstrate in front of the class. I will ask two trainees to demonstrate to the class and it is usually picked very easily.

6.       DELETING A MESSAGE.

After sharing messages in pairs, I will ask one of the trainees to record a short message in a category. I will ask a different trainee to retrieve the recorded message and following the audio instructions after pressing the black circle, delete the message. This becomes more like a repeation because they would have heard the delete option during the copying. I will now demonstrate to the class and ask each of them to record a message in a category and come up to the front, retrieve it from the category it was recorded in share it with a chosen friend and delete it.

7.       GROUPING.

This is usually the last activity. I will now group the trainees into two or three groups depending on their number and  at this stage, you would have notice those that are exceptionally good and get them to help moderate. The moderator will ensure that each person in the group makes a recording in a chosen category from the first person to the last. Then from the second person to the previous first person each will retrieve her recorded message and play it to the group, copy it to the next person and deletes it from her device. It follows the same order until all the activities are carried out and understood by all members. I will give extra attention to those that need to polish up and in over 100 people that I have trained, only eight people never picked things strongly before leaving the training session.  All of them improved with overwhelming success rates when I visited them a week after leaving the device with them.

GENERAL TIPS.

I will re-group them and tell them general information about proper handling of the device against water and fire. I will teach them how to fix batteries and tell them not to listen in high volumes except they are in a groups because that will weaken the batteries much faster. I will show them the help menu and let them know that essence of the audio manual so that they can always refer to it anytime they have a problem with using the device.

I then give those that can read user manuals and allow them to take the device home for practice.

The time frame on training is variable depending on the background of the trainees. Averagely you can spend between one hour to three hours training an oral person and in some instance only 30minutes on others with varying exposure to technology. Training in groups could take two days with spaced intervals. Five to eight hours with breaks of 45mins and concluding activities six and seven the following day.

Talking Book Assembly Party

Friday, March 25th, 2011

Volunteers continue to help keep the Talking Book affordable with their invaluable help at Talking Book assembly parties.

Thank you to the contingent of Renton High School National Honor Society (NHS) members who were part of the February 19 event. NHS members included: Tricia Bui, Dalena Pham, Delfin Buyco, My-Huyen Pham, Tyler Yorita, and Roedah Mansour.

“We enjoyed taking part in this wonderful program! It was a lot of fun.” said Tricia, NHS President.

Thank you, also, to Val Wells and CityYear volunteer Malia Makowski.

If you would like to participate in an upcoming party, please contact doris@literacybridge.org.

Testing the Usability of the Talking Book

Thursday, July 15th, 2010

Here is a post from Trina Gorman:

Last month, Cliff and I went to Ghana to develop partnerships with local organizations and to conduct a usability study on the device. Our goal through usability was to answer the question: How can we improve the Talking Book to make it easier for illiterate people to use?

We spent time in two villages – one slightly more urban than the other. Andy would teach a group of new users about the device and how to use it. He would then ask them to perform a task, for example to find a message in the health category.

We found that many variables influence how quickly a user learned – everything from their age and education level to their familiarity with other technologies (like a radio, mobile phone) and how close they lived to an urban city. Comfort and repetition were also key – we often saw significant improvement after letting users take the devices home for the evening. The accent of the system language was also important for some – the closer the accent was to their immediate village, the better.

There were many interesting similarities to life here in the states. For example, children learned with impressive speed. But have you ever tried to teach your grandmother how to send an email? Teaching an illiterate elderly woman how to use the Talking Book is precisely the same. She needed to believe the device was valuable and she needed to have the determination to keep trying.

Below are two videos to give you a glimpse into our work. The first shows a user performing a task after Andy’s teaching – you’ll notice at the end she successfully finds the message. In the second, Andy debriefs his thoughts after our weeklong effort. I think we all left pretty satisfied with what we found – it was encouraging to see users learn from eachother and we made some nice improvements that will make the device even more effective.

1000 Plastic Housings Arrived Today

Tuesday, July 13th, 2010

Today we received 1000 plastic housings for our Talking Books. We produced a similar number of blue, green, and orange parts, since there still doesn’t seem to be one favorite color among our customers.

We are still waiting on the circuit boards to be assembled inside these housing parts, but it’s nice to have these ready to go.

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Talking Book UI Question: multi-function buttons

Friday, April 17th, 2009

Take a look at our current button layout for the Talking Book Device.  

Talking Book front

Talking Book front

 

The main navigational buttons are four arrows: up, down, left, right.   Now take a look at a user guide written by Emily Onufer, one of our pilot interns.  This guide was prepared on very short notice for the director of basic education at Ghana Education Service in late January, and it gives a sense of the latest audio user interface that is currently being used in our pilot program in northern Ghana.

If you follow the guide, you’ll see that the left and right buttons are used to change subjects; the up and down buttons change messages within the selected subject.  But once you’ve moved into one of those messages, the left and right arrows now move the user to different parts of that message/audio recording.  The default behavior is +/- 10 seconds, but different applications can use those buttons for other navigational jumps.

When I give demos of the device, I sometimes wonder if it is counter-intuitive that the left/right buttons no longer change subjects once you’ve selected a title.  Our solution is that the “home” button brings you to the main entry point, where left and right arrows change subjects again.

Users in our pilot program seem to be fine with this design; in fact, they drove the design to where it is today, simplifying an earlier design brought to them for the pilot.  But I still wonder if there is a better compromise between button consistency and flexible functionality without too many buttons.

Latest Prototype Arrives

Monday, August 25th, 2008

Well actually, it arrived last month — I’ve just let myself push blogging aside as things have gotten very busy lately.

Based on the feedback we got from my trip to Ghana, we came up with a new design in May. Last month, we received the plastic parts, printed circuit board, and membrane switch (the buttons). Everything fits together really well. After a few tests and some more fundraising, we’ll be ready to order 100 devices to take to our pilot test in the Upper West Region of Ghana. I’m hoping we can actually order 200 devices to also cover the following pilot program in the Bangalore Rural District. This will substantially lower the price for all the units. More on the cost of the pilot devices in a future post.

So here are a couple shots of the product without its gray silicone elastic band:

Talking Book Device prototype showing speaker, ten buttons, and USB cable

Talking Book Device prototype showing speaker, ten buttons, and USB cable

Here you can see the ten buttons: a play/pause button in the middle, four programmable arrow keys surrounding it (to move through the audio menus and throughout an audio recording), a record button in the bottom left, two volume buttons in the top right, a home button, and the asterisk/star (*) button used for selection and for audio hyperlinking. There’s also a dual-color LED (red and green) in the top center. Above the buttons and to the left, we have a built-in speaker.

Behind the device, you can see some twine coming out the top, near where we have a headphone receptacle. There’s a hook on the back of the device to allow any lanyard/string to be tied to the device so that it can be carried around the neck or over a shoulder.

The last noticeable component of the device is the USB cable sticking out the right side. This cable normally fits in a pocket in the right side of the device. Here is it shown partly extended. Each device has a cable with male plug and a female USB receptacle (both mini-B type). This allows any user to give or receive an audio recording to/from any other device. The receptacle also makes it easy to copy recordings onto the device from a computer — the device appears to be a mass storage device. Even the device’s audio user interface can be updated this way, which is important when you need the device to give instructions to users in many different languages. It should be easy for anyone to record the operating system’s audio prompts in a new language and then copy those new recordings on to the device. Although normally, a user would change the language of their device’s audio user interface by connecting with a kiosk

perspective shot of standing Talking Book Device

perspective shot of standing Talking Book Device

We also have a built-in microphone under the little vertical slot on the left side, just to the left of the Home button. This allows any user to create and share a new audio recording. On the left edge of the device we have a 3.5mm audio input for an extension microphone or to transfer analog audio. We don’t have a key use case for this port, but it just felt like a player/recorder with an audio output should also have an audio input. In addition to the audio in , audio out (headphones), and the mini-B USB receptacle, we also have a receptacle for an AC adapter. If you do have access to electricity, you shouldn’t be forced to use batteries to power the device.
Two early design models with the current pilot prototype

Two early design models with the current pilot prototype

To protect all these ports from dust and water and also to provide a “bumper” to protect the device from impact, the device comes with a silicone elastic band that wraps around the edges. You can see the band in this picture of the device with its predecessors. The band currently has an opening for the headphone port, but the user would need to pull back part of it or remove the whole thing (which is extremely easy to do) to extend the USB cable to for device-to-device copying.
I’ll try to post more pictures of the device in the coming weeks. Today the prototype is in North Carolina with our mechanical engineer. Last week, it was in San Francisco with our electrical engineer. We’re passing it around to give it one last review before ordering 100-200 sets of parts for our upcoming pilot tests in Ghana and India. When I get it back later this week, I’ll try to post a video of how it works. There’s still a bit more software to work on, but it’s getting close!

Battery Costs and Usage in Ghana

Saturday, May 3rd, 2008

I found that battery pricing was surprisingly similar throughout the
country, whether in Accra or in the Upper West Region. Although it
was possible to buy alkaline batteries in Accra and in some spots in
larger towns in the Upper West, I was primarily pricing carbon-zinc,
AAs and D batteries. The most common Ds, by far, are the TigerHead
brand (Super Quality paper wrap). The most common AAs are the SunwattTiger Head batteries, which are very common in rural Ghana
brand (Super Quality), but I also found Tudor and Kenashmi, Funtom,
and Panasonic Hyper.

A good price for two TigerHead Ds was about $0.30, with $0.35 being
about the average. A good price for any four AAs was about
$0.20-$0.25, but I usually found them for about $0.30. Six AA
alkaline Energizer Max batteries ran about $3.00 — about 7-8x more
expensive per battery, or roughly 30% more expensive per mAh.

Radios and flashlights were the primary uses of batteries, both size
Ds. I actually can’t tell you what the most common use of AAs were,
but they are far less commonly used. Depending on usage, households
in the villages where I inquired tended to spend $0.50-$1.40 per month
on changing out two D cells in one radio every one to three weeks.
Flashlight battery replacement was a much less significant cost, but I
don’t have a good number for this. Overall, it appears that I was
getting numbers that were a good bit below the averages of $2/month
that I had read about. It’s possible that folks weren’t remembering
all their expenses; or, it could be that I was in some of the poorest
villages in Ghana.

I ended up purchasing a dozen TigerHead size D batteries in the Upper West Region and another dozen in Accra. I did the same the Sunwatt AA batteries. The plan is to test these batteries to get an idea how well they will perform in powering the Talking Book device.