These programs perform LPC analysis of sound files, producing data files for use by Csound 'lpread' units. The programs anallpc ptrack are run separately; their outputs can then be combined using lpconcat to form a single file containing both lpc ceofficients and pitch data. Csound will ultimately expect lpc filenames to be of the form 'lp.n', where n is a user-supplied identifying number (see the Csound manual). The 'lp.man' file included here can be installed locally.