Manipulando segmentos

La herramienta de selección es una herramienta multipropósito: se puede usar para seleccionar, mover, copiar, cambiar de tamaño y crear segmentos.

Su uso más evidente es la selección: seleccionar un segmento sencillo pulsando en él con la herramienta selección, o seleccionar varios mientras se tiene pulsada al mismo tiempo la tecla de mayúsculas, o pulsando en un área vacía de la ventana y arrastrando un area.

Para mover segmentos con la herramienta de selección, sencillamente pulse y arrastre en el segmento. Para crear copias, pulse y arrastre teniendo pulsado Ctrl. Para cambiar de tamaño un segmento, pulse y arrastre en el borde derecho del segmento; y para crear nuevos segmentos, pulse y arrastre  en un área vacía con el botón central del ratón.

La herramienta de selección no reemplaza a las otras herramientas completamente, aunque - algunas veces usted necesita más precisión sobre que operación pretende, principalmente cuando trabaja con un segmento pequeño.

Para mover un segmento a una pista o de tiempo de comienzo diferente, use la herramienta de mover y pulse y arrastre en el segmento que usted desea mover. Si mantiene pulsada la tecla Ctrl mientras arrastra se copiará el segmento en lugar de moverse.

To resize a segment, use the resize tool and click and drag on the right-hand end of the segment. Resizing a segment has the effect of extending or shortening it, by subtracting some of its contents or adding silence at the start or end. If you hold down the Ctrl key, the segment will be rescaled (stretched or squashed) instead of extended or shortened.

For both move and resize you can hold Shift for fine positioning, to avoid snapping to a particular grid position.

Resizing a segment normally makes it shorter or longer by subtracting content or adding some extra space. However, by holding the Ctrl key while resizing, you can instead stretch or squash the contents of the segment. You can also do this by selecting the segment and then using Segments->Stretch or Squash....

For segments that contain MIDI events, this re-spaces the events so that they are spread across the new segment's duration, playing back faster or slower than before but in the same relative proportions.

For audio segments, this time-stretches the audio, altering its played speed without altering its pitch (as would happen if the audio was simply played back faster or slower). Time-stretching usually adds some audible artifacts as well, so the quality of your results may vary.

Rosegarden does not alter the original audio file when time-stretching an audio segment, and if you rescale the same segment repeatedly it will always work from the original file instead of accumulating timestretching artifacts with each rescale. You can rescale both mono and stereo audio.

(For reference, Rosegarden uses a frequency-domain time-stretcher based on a phase vocoder with phase-locking at percussive transients. This usually produces good results with stable harmonic sounds such as pads and basses as well as purely percussive sounds such as drum loops, but is less effective for composite material or music with soft or breathy note onsets.)

You can use the split tool to split a single segment into two separate segments. To split your segment, select the split tool and click on the segment you wish to split.

By default segments are split on the closest barline to the cursor, but this can be prevented by holding down Shift while splitting the segment.