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Re: Defect: quarter tones sound bad before rest


From: Pavel Roskin
Subject: Re: Defect: quarter tones sound bad before rest
Date: Fri, 20 Jan 2012 11:52:56 -0500

On Thu, 19 Jan 2012 18:12:59 -0800
"Keith OHara" <address@hidden> wrote:

> On Thu, Jan 19, 2012 at 5:38 PM, Pavel Roskin <proski <at> gnu.org>
> wrote:
> 
> > I have discovered that notes that use quarter tone sound bad before
> > rests or at the end of the melody.  Here's an example:
> 
> > Everything sounds right until the last cih' that bends at the end.
> 
> I cannot hear the end-of-note bends on my player, but I have heard
> them before.
> 
> MIDI encodes music as if it were being performed by up to 16
> polyphonic equal-tempered keyboards, each with its own pitch-bend
> wheel.  LilyPond's MIDI output returns the pitch-bend wheel to center
> immediately after releasing the key, which seems correct.

I hope the "wheel" has no moment of inertia and returns to 0
immediately.  If not, I'd say it's an unhelpful effort to simulate
limitations of the instrument.

It would be nice to keep the pitch-bend wheel in the given position
until the note that doesn't need it.

> Maybe your
> playback software simulates an echo (sometimes called reverb) and
> applies the changed pitch-bend setting to the echo?

I tried several options on timidity.  The only option that has any
effect is --fast-decay, but it only lessens the effect without
eliminating it completely.

Some other instruments don't have a noticeable bend, for instance
viola, but they don't sound nice for a warmup, and the chords sound
terrible.

Amazingly, "choir aahs" have a significant bend.  That doesn't
correspond to the physical reality, does it? :)

So I settled on "electric piano 1" with "timidity --fast-decay".  It
sounds reasonable for my purpose.

-- 
Regards,
Pavel Roskin



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