[gmpi] Re: Reqs 3.8 Events - ramped events
- From: Steve Harris <S.W.Harris@xxxxxxxxxxxxxxx>
- To: gmpi@xxxxxxxxxxxxx
- Date: Wed, 7 Jan 2004 14:28:04 +0000
On Wed, Jan 07, 2004 at 03:12:59PM +0100, David Olofson wrote:
> On Wednesday 07 January 2004 14.47, David Olofson wrote:
> [...]
> > <target, duration> ramps don't have this issue. You don't need to
> > have a clue about the current value to generate a proper, click
> > free ramp, so it works reliably even if the control input has an
> > extremely inaccurate ramping implementation.
>
> BTW, this also means you can safely interrupt long ramps on inputs
> that approximate linear ramping. Non-linear approximations make it
> impossible to jump in with SET events or <start, delta> events
> without the risk of jumps. There's no way the sender can know what
> actually happens during a ramp, unless the ramping is *perfectly*
> linear.
That is a valid point, but I'm not sure it outweighs the serious problems
with (target, duration), and I'm not sure when and how often you need to
interrupt ramps.
> Note that "clicking" isn't some clearly defined phenomenon that can be
> eliminated by a hardwired control filter. A fast envelope *should*
> generate sharp transients! The whole point with ramp events is to be
> able to express more accurately what you want, so plugins don't have
> to be cripled by hardwired 20 Hz LPFs on all control inputs.
Yes, only the plugin will be applying smoothing filters, as only it knows
which ones will be appropriate.
- Steve
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