The analysis procedure attempts to
represent a sound with many individual sinusoidal
tracks (partials), each corresponding to a single
sinusoidal wave with time varying frequency and
Something which closely resembles
the original input sound (a resynthesis) can be
generated by computing and adding all of the
individual time varying sinusoidal waves together.
In almost all cases, the resynthesis will not be
exactly identical to the original sound (although it
is possible to get very close).
Aside from offering a very detailed
analysis of the time varying frequency content of a
sound, a sinusoidal model offers a great deal of
flexibility for editing and manipulation. SPEAR
supports flexible selection and immediate
manipulation of analysis data, cut and paste, and
unlimited undo/redo. Hundreds of simultaneous
partials can be synthesized in real-time and
documents may contain thousands of individual
partials dispersed in time. SPEAR also supports a
variety of standard file formats for the import and
export of analysis data.
What’s new in this version?
- No expiration date!
- The pencil tool now works! Amplitude is
proportional to horizontal velocity: the faster
you move to the left or right the higher the
- Many small bug fixes and interface
improvements for Windows.
- Support for DirectSound and ASIO sound
devices on Windows (select in the Preferences
- Fade in/out selected partials.
- Improved Windows and Mac installation.