How to distinguish whether it is cresc or decresc in fluctuation?

[pillow8781]

Hi! I am interested in your project. Currently, I am doing similar stuff, but i have some questions.
(1) I know that Fluctuation stands for how much does that note cresc or decresc. Peak means which position got the maximum energy.
However, i am wondering how to know if that note is cresc or decresc. Let's assume our peak position is 0.4, and fluc is 0.3. Then, is it decrease 0.3 or increase 0.3? How to distinguish it?
(2) I know that all the expressive control values are normalized between 0 and 1, but what's the unit measure in these expressive controls?

Thanks for answering

[lukewys]

Hi, pillow, (1) The peak position and fluctuations together describe a coarse shape of the loudness curve. "Let's assume our peak position is 0.4, and fluc is 0.3. Then, is it decrease 0.3 or increase 0.3? How to distinguish it?": In this case it means the volume increases until 40% (peak=0.4) of the note duration, and it decreases. The fluc=0.3 is just a fuzzy description of how intense the loudness changes. It is not a lossless description -- the model has to infer an exact loudness curve.\ (2) There is no exact unit measure for most of the expressive controls. Some of the measure, e.g., loudness_mean, is in dB measure. But others, e.g., loudness_std (fluc) or vibrato, does not has a measure. Best, Yusong pillow8781 ***@***.***> 于2022年10月23日周日 22:58写道：

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Hi! I am interested in your project. Currently, I am doing similar stuff, but i have some questions. (1) I know that Fluctuation stands for how much does that note cresc or decresc. Peak means which position got the maximum energy. However, i am wondering how to know if that note is cresc or decresc. Let's assume our peak position is 0.4, and fluc is 0.3. Then, is it decrease 0.3 or increase 0.3? How to distinguish it? (2) I know that all the expressive control values are normalized between 0 and 1, but what's the unit measure in these expressive controls? Thanks for answering — Reply to this email directly, view it on GitHub <#62>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AGXJZ74HWF4INCK7B6U34A3WEX3L7ANCNFSM6AAAAAARMSKILA> . You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

[pillow8781]

Ohh! Many thanks, now I understand the meaning.
This solves my doubt