[jmsl] New User Question

[jmsl at music.columbia.edu]

Hello Edward

duration is always in seconds, as is hold (ie sustain time, the 
difference between staccato and tenuto for example). These values will 
be scaled according to the timestretch value (which is how, for example, 
JMSL Score implements tempo).

In TransposingSamplePlayingInstrument, if the hold time is shorter than 
the duration of the sample, there will be no looping. If the hold time 
is longer then it will using the portion of the sample bounded by with 
two markers (which you would have done in a sound file editor), and it 
will loop that the appropriate number of times to achieve the hold time. 
TransposingSamplePlayingInstrument goes one better and uses a 
doublebuffered scheme where two sample loopers are swapping back and 
forth, with crossfades at the boundaries, so that the loop is less 
noticeable.

You can check out 
http://www.algomusic.com/jmsl/tutorial/jscoretoot15.html , which covers 
this stuff in more detail

Let me know if this answers your questions.

Thanks
Nick Didkovsky

jmsl at music.columbia.edu wrote:
> Hi,
> I was trying to figure out by browsing the Javadocs for JMSL some of the
> specs on the most common music shape arguments like duration, hold,
> amplitude, etc., such as what are the allowable input ranges, how does hold
> relate to duration (and the length of the sample).  I understand that these
> are somewhat dependent on the instrument . . . in this case I would be using
> the TransposingSampleSustainingInstrument. I also browsed the tutorial and
> could not find too much about it. If  you could point me in the right
> direction with a link I would appreciate it! (Or a code example that
> clarifies the use of these quantities).
>
> Many thanks,
>