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We are just beginning (as of April 2010) a project to
record our sermons and distribute them via the Internet
and other means to persons who could not attend our services
or who wish to hear them again.
We use a ZOOM H4N digital recorder to capture the audio. For now
we are just using the built-in microphones. We plan to try
recording one or two channels from the Church sound system as well,
which should give us an opportunity to reduce some of the ambient
sound. I am very impressed with the sound quality as recorded
from the built-in microphones on this device.
The ZOOM records in high definition .wav format. We use the
free "audacity" software with "lame" to edit the .wav and convert it to
the more compact MP3 format.
At first, the sermons and scripture were converted to constant
128kb/s. We experimented with "average" 64kb/s and/or 96kb/s, and
finally settled on two formats: a "high definition" 96kb/s average stereo
MP3 and an "AM-radio-quality" 8kb/s monaural MP3. The latter are processed
in Audacity with the "Effects/click-and-pop removal" filter, then
"Effects/normalize to -0.5 Db", then "Tracks/stereo-to-mono", and finally
"Export/MP3/8k average" with sampling to 8kbits/second. Visitors are
presented the 8k-mono by default, with an option to switch to a page
with the High-definition stereo (which takes about ten times as long
to download). On September 5 we switched to presenting the high definition
(96k stereo) files by default and the monaural (now 16k) as an option.
The original WAV files are too large to put on a web site, being
about ten times as large as the High Definition files. We are keeping
them on a local hard drive for possible burning to CD or cassette tapes
for distribution, or for conversion to other formats.
This web page is hand-edited, but we are looking into using
sermonsontheweb, which is free
software available from SourceForge.net,
to create a more attractive page and perhaps more optimally compressed
files.
Editing of the WAV files is labor-intensive. It's necessary
to go through each file several times to make sure we don't divulge
personal information or violate copyrights (e.g., if we sing "Happy Birthday"
or another song that might not be included in the church copyright license).
One parishioner has reported that the files get downloaded as "Quick-Time"
files that she can't then load onto her portable MP3 player (iPOD). I think
that is a problem with the file associations on her machine. She solved the
problem by "dragging" the icon into her music-management application.
The presence of the large MP3 files on our web site caused the Bing
search box to hang while "Loading". This was reported to the Bing
Community forum (see
)
http://www.bing.com/community/forums/p/657651/9596415.aspx#9596415)
and to Microsoft, and
we found a workaround: referencing the audio directory as
http://tinyurl.com/cokesburymemorial/audio instead of
http://cokesburymemorial.org/audio (on our current domain). The
tinyurl URL is an alias for the real one, but Bing apparently does
not search it because we don't mention it in the Bing search strategy.
I also did this initially using another registered domain
that we happen to have (cokesburyumcharford.org), which worked, and
with http://bit.ly/cokesburymemorial-audio/
and http://bit.ly/cokesburymemorial/, but
could not get those to work.
We lost one service (April 11, 2011, 08:30) due to forgetting to "empty the
trash" on the SD card in the digital recorder after uploading the previous
recording.
Starting in December 2011 we contracted Ekklesia to set up a new
web site. For this we make a 32kb/s monaural MP3 of the sermon only, which
Ekklesia reduces to 24kb/s monaural. We continue to maintain the
96kb/s stereo recordings of the entire service and the 32kb/s monaural
recordings of the sermons at http://cokesburyumcharford.org
In December 2011 we relocated our web site registration and hosting from
GoDaddy.com to namecheap.com.
We lost several services (February 26-March 20, 2012, 08:30) due to
a broken power cable for the digital recorder. I wasted a couple of weeks
looking for the spare and finally ordered a new power brick.
We also
replaced the 4GB SD card with a 32GB one. This will allow us to start the
recorder the day before, on occasions when we won't be present to start
it at the morning service.
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