Re: Newbie questions
Re: Newbie questions
- Subject: Re: Newbie questions
- From: James Cicenia <email@hidden>
- Date: Sun, 5 Apr 2009 09:26:23 -0500
Well hopefully this will put me on the right track.
I hope I am not in over my head here.
I will start looking at code samples for the iphone and wherever I can
find
and start to see how deep in I get.
I will certainly be prodding this list more as I start in ernest this
week.
Thank you,
James Cicenia
On Apr 4, 2009, at 4:04 PM, Brian Willoughby wrote:
It's a bit misleading when folks refer to this sort of thing as
'phase' - a more appropriate term would be 'polarity.' Only a pure
sine wave has a 180-degree phase shift when it's polarity is
inverted, but any changing waveform will obviously not have its
features shifted in phase at all, because they remain at the same
precise time.
To get to your question, you basically subtract the two channels.
Using 'minus' is the same as reversing polarity of a channel.
Be warned that this effect produces a mono output from a stereo
input, and it does not cancel stereo reverb effects on the center
channel vocals. It will actually mix the reverb from both channels,
potentially making it louder. In other words, this is a very easy
effect, OUTPUT=LEFT-RIGHT, but you'll end up with a mono song with
ghostlike vocals remaining, unless there's no reverb or purely mono
reverb in the original.
It should be a fun first project, though.
Brian Willoughby
Sound Consulting
On Apr 4, 2009, at 11:55, James Cicenia wrote:
I need to make a voice remover. I have been looking around and
it seems that I can do a left / right channel phase operation to
remove
the center channel vocals which is good enough for me.
Being absolutely new... I would appreciate any code, examples,
tutorials or things to read that could help me get started.
This will be for the iPhone.
thanks
James Cicenia
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