Re: Using WMP to record voice?
From: Neil Smith [MVP Digital Media] (neil_at_nospam.com)
Date: 05/08/04
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Date: Sat, 08 May 2004 14:37:59 +0100
On Fri, 7 May 2004 12:16:11 -0700, "andy"
<anonymous@discussions.microsoft.com> wrote:
>Neil,
>
> Thank you for your reply. When you say capture the audio uncompressed first, can I just use MS Sound Recorder?
Yes, although there are many 3rd party programs for doing this, sound
recorder is very old and has no features to speak of. I got creative
wave studio on my sound card drivers disk. Usually the sound card
manufacturer will include something similar for recording wav files.
Try to pre-process (equalize and limit / compress) using a mixing desk
before taking down to a stereo or mono stream.
Limiting means the peak level is limited to 100% of the range - eg
when somebody speaks too close to a mic, words beginning 'P' and 'S'
and so on are sometimes overloaded. Limiters make the pulse of audio
reach a maximum value. Probalbly not the best explanation in the world
- speak to your church's sound engineer types ;-)
> What tool or program would I use to edit (e.g. out the feedback, cough, volume level, etc.)?
I've used 'Soundforge' which is pretty good, can also add echo, remove
reverb and all sorts of other processing on the raw file. There are
loads of options, I'm sure people on here can suggest excellent free
sound file editors.
> You then suggest using Windows Media Encoder to encode and compress? Please expound. How, why, what tools?
Well you can use that or movie makes, but encoder gives tou more
options and control over the extent of compression. For example if
it's just speaking (no music etc) then you can compress real hard to
just the audio range used by speech - eg up to 8-10khz. The file is
usually then small enough to stream direct from a file on your website
to 56k modem users. An uncompressed audio track will be too large to
stream even over some DSL lines.
> If we record in MS sound recorder, it will be a .wav file, perhaps PCM, Radio Quality, 22.050 kHz, 8 bit mono, 21 kb/sec.
Sure you can. I'd sample at the highest rate - best quality - that you
have disk space for. Disks are cheap, going back to a file and trying
to improve quality after the event is difficult, expensive and usually
not successful. Try 44khz CD quality and work from there. 8bit sound
is usually cruddy anyway, really you need to use 16 bit for enough
levels (65000 vs 256) so it doesn't sound like a computer voice !
>Can't this be put directly onto a CD? or is this a bad idea?
Well, you'd be under-sampling. Just use the CD quality settings for
CD, then there's no mismatch between the capability of a CD's dynamic
range and that of the recording.
>Thank you again
>God bless you
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