[linux-audio-user] Newb MIDI questions here...

[clinart]

I see.  Thanks to everybody for your input.  I can see how easy it is to work
with MIDI and I guess I thought that it would be possible to work with audio
the same way (perfect pitch shifts, perfect timing, etc.).  I guess what
still puzzles me is working with both together.  Is it possible to
synchronize an audio track with a MIDI drum track, or do you just have to
play the audio around the MIDI so that everything syncs up the old fashioned
way (by ear)?  Also, can you stretch an audio track (say in Rosegarden or
Ardour) just a tad without warping it too much so that the final note of
your chorus hits exactly on time with the crash, for example?

Thanks again.  This is all very informative.  

Tim Howard wrote:
> 
> On 3/26/07, clinart <clinart at gmail.com> wrote:
>> 1) Why use MIDI?  I have heard stuff that I recorded professionally
>> sequenced with MIDI and must say that I can hear a difference. Is this
>> because it's all perfectly synced up?  What are other advantages, if any,
>> of
>> MIDI over audio?
> 
> The way that I use MIDI and audio together is like the following example:
> 
> 1. Play rhythm guitar track and record into Ardour (as audio)
> 2. Listen to track in Ardour while playing my keyboard along with it.
> This keyboard is sending MIDI signals to Rosegarden, which is just
> recording the MIDI data.
> 3. Using Rosegarden's MIDI score editor (or piano roll), clean up
> minor mistakes, and adjust timing if necessary.
> 4. Play MIDI from Rosegarden into LinuxSampler to make it sound like a
> real piano.  This resulting audio is then recorded in Ardour as
> another track.
> 
> If I were just playing keyboard -> LinuxSampler -> Ardour, I would not
> have the opportunity to do step 3.  Also, what if I later decide I
> want to change the key or tempo I was playing in.  You cannot do this
> very easily (if at all) with pure audio.  You would have to play the
> piece over again.
> 
> 
>> 2) Is there Linux software that can convert an audio signal/file to MIDI?
> 
> Most, if not all pitch-to-MIDI converters only work with monophonic
> audio files.  In other words, one person singing, one trumpet playing,
> etc.  This is because of the extreme difficulty in separating out the
> timbres and timings of multiple notes.  It just gets really messy and
> inaccurate.  As a result, not many people have taken pitch-to-MIDI
> very seriously.
> 
> I would be happy for someone to show that I'm wrong in saying this,
> but this is how I currently understand it.
> 
> -TimH
> 
> 

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