[Sugar-devel] Advice request: XO sound recording

James Simmons nicestep at gmail.com
Sun Oct 3 19:28:03 EDT 2010


There is a chapter called "Fun With The Journal" which has examples of
listing out Journal entries.  What you need to do is figure out what
the MIME type of the Ogg entries in the Journal are and write code to
list them.  Then you can put the entries in a GTK table and select
them from there.  You might find the code in View Slides instructive
for that.  I have a horizontal pane that opens up that lists out
Journal entries that have MIME types associated with image files, and
View Slides lets you add these to the slideshow as well as extract
slides from the show as Journal entries that have an appropriate MIME
type.  Between the code for View Slides and "Fun With The Journal" you
should be able to come up with something workable.  The "Sugar
Commander" Activity might be worth playing with too.

Good luck with this.

James Simmons

On Sun, Oct 3, 2010 at 2:00 PM, Art Hunkins <abhunkin at uncg.edu> wrote:
> James (and others who replied to my query about reading/finding audio files
> - thanks):
> I see now that working through the Journal would have many benefits -
> especially for dealing with files generated by Record, which writes its
> files to the Journal (where they can be appropriately named by children) and
> where they can easily be located.
> I've looked at the FileChooser method, and this has none of the above
> advantages: file structure is different for SoaS and XO's, locations of file
> storage are different for different activities, filenames are nonsensical,
> etc., etc.
> Please indicate where, in your wonderful manual (or elsewhere), I can find a
> simple example of retreiving Journal entries. (I cannot readily locate one.)
> I need to retrieve an Ogg Vorbis (.ogg) or other audio file, and insert it
> as a filename string in my script. Presumably this process would be
> instigated by a button press.
> Thanks for your help.
> Art Hunkins
> ----- Original Message ----- From: "James Simmons" <nicestep at gmail.com>
> To: <sugar-devel at lists.sugarlabs.org>
> Sent: Friday, October 01, 2010 12:44 PM
> Subject: Re: [Sugar-devel] Sugar-devel Digest, Vol 24, Issue 2
>> Art,
>> Really the best way to share data between Activities is to create and
>> read Journal entries.  The "Make Your Own Sugar Activities!" FLOSS
>> Manual explains how to do this.  Activities have only a few
>> directories they can write to, which are not shareable with other
>> Activities.  Sugar does this by design to prevent a malicious Activity
>> from trashing a kid's computer.  Using Journal entries isn't that
>> difficult.
>> James Simmons
>>> Date: Fri, 1 Oct 2010 13:56:33 +0200
>>> From: "tom.staubitz at fhtw-berlin.de" <tom.staubitz at fhtw-berlin.de>
>>> Subject: Re: [Sugar-devel] Advice request: XO sound recording
>>> To: Art Hunkins <abhunkin at uncg.edu>
>>> Cc: sugar-devel at lists.sugarlabs.org
>>> Message-ID: <2380056B-83CE-491D-A4C0-38AE3A40B559 at fhtw-berlin.de>
>>> Content-Type: text/plain; charset="us-ascii"
>>> On Oct 1, 2010, at 12:33 AM, Art Hunkins wrote:
>>>> My new activity, FileMix, encourages children to create their own
>>>> "nature"
>>>> recordings to mix and process in FileMix (i.e., create "soundscapes").
>>>> Files
>>>> can be mono or stereo, any sample rate and duration, and most file
>>>> formats.
>>>> The files also need to be renamed and placed in the FileMix.activity
>>>> folder.
>>>> The Record activity is a natural for recording audio, and I had thought
>>>> it
>>>> would be the appropriate vehicle. I've recently discovered that it only
>>>> produces Ogg Speex files, not the higher-quality Ogg Vorbis variety.
>>>> Unfortunately, Csound and libsndfile handle only Ogg Vorbis - not Speex.
>>>> (It
>>>> would be very nice if Record *could* output Ogg Vorbis.)
>>>> So I turned to eToys. I find it somewhat iffy to record in eToys (on an
>>>> XO-1.5); sometimes it works, sometimes not. The main obstacle I face is
>>>> that
>>>> recordings seem embedded in projects, and I don't find where/how to
>>>> access
>>>> the recording by itself. (The sound editor, and variety of output
>>>> resolutions [including WAV and VORBIS] are excellent.) The documentation
>>>> (floss) isn't helpful here either.
>>>> I am able to record and save, but to where I don't know -not, it seems,
>>>> to
>>>> the Sound Library. The Library location is not given. It seems you can
>>>> take
>>>> something out of it, but not put something in? (Confusing.) I very much
>>>> need
>>>> a simpler procedure to save and transfer/relocate individual recordings.
>>> I'm currently working on a radio play production with Berlin based
>>> children's radio Radijojo[1].
>>> We are planning to produce as much of the play as possible on the XO and
>>> currently are facing exactly the same problem.
>>> Your new activity sounds pretty interesting. We considered recording with
>>> Etoys (if we find a way to access the audio files)
>>> and then do the mixing with Audacity. A tool that is easier to use than
>>> Audacity would be very much appreciated though.
>>> Tom Staubitz
>> _______________________________________________
>> Sugar-devel mailing list
>> Sugar-devel at lists.sugarlabs.org
>> http://lists.sugarlabs.org/listinfo/sugar-devel

More information about the Sugar-devel mailing list