OMChroma User ManualGetting started > Amplitude Envelope

Attention, votre navigateur ne supporte pas le javascript ou celui-ci à été désactivé. Certaines fonctionnalités de ce guide sont restreintes.

Amplitude Envelope

Tutorial Getting Started 03 - Amplitude Envelope

Two different ways to generate the same Amplitude Envelope.

Break Point Function versus GEN Routine

Reminder

To add keywords to synthesize type "k" ("shift + K" to remove them). To select a given keyword do "alt+click" on the keyword's inlet (dark blue) and choose the desired item from the pop-up menu.

:name is the the audio-file name. One must have different names for audio-files, if one wants to compare them. Otherwise, all the sound rendering will have the default name (my_synt.aiff) and the last rendering will overwrite the old one.

:tables are the Csound's f-tables generator subroutines, or GEN functions. Give the f-statement as in Csound (see the Csound documentation for details), but between double quotes; several tables can also be used if they are placed in a list (of tables between double quotes).

In both examples we have :

3 events one after the other -> :edel 0 1 2 (sec.) with

3 different frequencies -> :freq 440 660 880 (Hz) and

3 different maximum amplitudes -> :amp 0 -6 -12 (dB)

all the events are 1 second long :durs 1 (sec.)

BUT

In example A the Amplitude Envelope is made by a BPF (Break Point Function) which is directly connected to the :aenv slot.

In example B the Amplitude Envelope is made by a GEN subroutine (GEN function number 7, f-table number 10) which is instanciated by the synthesize's keyword inlet (:tables). The number of the f-table is to be specified in the :aenv slot of ADD-1.

Both examples generate exactly the same result.

page précédentepage suivante

A propos...