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- PSTuner v2.0, ⌐ 1995, bruce linde/really desperate records
-
-
- OVERVIEW
-
- PSTuner is a Psion 3a 'strobetuner' that determines pitch by
- grabbing quarter-second samples and counting cycles/second, using
- a couple of creative algorithms tailored to the Psion 3a's
- sampling environment.
- It is extremely accurate (at a cost of some speed) and will
- yield best results when fed clean, consistent notes (a note struck
- too hard will ring sharp before settling in). Or, you can use
- harmonics.
-
-
- FILES
-
- PSTuner requires three files, which MUST exist and be kept in
- these locations:
- \APP\PSTuner.opa
- \OPD\Tuner.pic
- \Sys$samp.ldd (must be at the root level)
- In addition, Psion has authorized distribution of Sys$samp.ldd on
- the condition that the docs and sample files (originally uploaded
- by Psion as TSMP10.ZIP) are kept together. They are included with
- PSTuner.
-
-
- THE DRIVER - Sys$samp.ldd"
-
- PSTuner makes use of a driver provided by Psion. The docs
- that come with the driver include the following disclaimers, which
- are not as dire as they might sound at first read:
-
- "Psion will not be held responsible for any loss of data as a
- result of use of Sys$samp.ldd, which is still to some extent in an
- experimental phase. It has not been exhaustively tested, and can
- not be relied upon, i.e., not to reset your 3a occasionally. It is
- not an official Psion product."
-
- The worst thing that I've experienced is that it took a little
- trial and error to ensure that PSTuner wouldn't leave the driver
- loaded in memory. I was extremely careful about making sure the
- driver cleans up after itself, but if this happens to you, you can
- easily recover the 6k of memory the driver grabs for itself by
- running the program and simply quitting before going into LISTEN
- mode.
- As far as stability goes, I've actually left the thing
- running for days with no problems. If you DO experience
- weirdnesses, please let me know a.s.a.p.
-
-
- SHAREWARE NOTIFICATION
-
- PSTuner came about as I was getting more and more into my 3a,
- trying to grok OPL, and playing more guitar (more about music in a
- minute). It occured to me that while I didn't always carry a
- tuner, I almost always had my 3a with me.
- I wrote PSTuner to exploit the digital sampling and
- programming features of the 3a, and because it was something I
- could use. It is my hope that you, too, will find it useful. If
- you DO continue using PSTuner, it is shareware...
-
-
- SHAREWARE DETAILS
-
- All proceeds from PSTuner go to The Documentation of AIDS
- Issues and Research Foundation. D.A.I.R. is a 501(c)3 non-profit
- information archive used by Persons With AIDS and medical
- professionals world-wide.
- Please send a tax-deductible donation of ANY size to:
- D.A.I.R.
- c/o bruce linde
- 2840 60th av
- oakland, ca 94605
-
-
- STUFF
-
- The 'Esc' key will get you out of most PSTuner screens. Help
- is not available while in LISTEN mode. If you don't back up your
- 3a, either to a RAM card or another CPU, please re-read the help
- file called THE DRIVER (above), and give backups some thought...
- unless, of course, you have nothing to lose.
- I am not responsible for out-of-tune performances or loss of
- data resulting from use or misuse of PSTuner or the Sys$samp.ldd
- driver. Oh, and don't forget that PSTuner is shareware. Thanks!
-
-
- HARMONICS
-
- Every note consists of a fundamental, and harmonic overtones
- (thirds, fifths, octaves, etc.). These 'harmonics' can be isolated
- on a guitar (or bass) by partially muting a string at the twelfth,
- fifth, or seventh frets, as you pluck the string. This dampens the
- grosser vibrations of the string, letting the higher-pitched
- components of the note (harmonics) ring through. 12th and 5th fret
- harmonics produce higher octaves of the fundamental; 7th fret
- harmonics yield fifths.
-
-
- MUSIC STUFF
-
- Write or e-mail for more information about:
- "bruce linde: not like other men", an independent release on
- really desperate records, and "Beggars and Saints" and "Monkey",
- the most recent releases by Jai Uttal and the Pagan Love Orchestra,
- on Triloka Records (w/ bruce on bass):
-
- really desperate records
- 2840 60th av
- oakland, ca 94605
-
- www.songwriter.com
- brucelinde@aol.com
-
- ----------------------------
- Credit Where Credit Is Due
-
- PSTuner is my first program. It was written with considerable
- support and guidance from Master Programmer/Lode Runner Ron
- Hunsinger. Every novice diving into the deep end of the
- programming pool should be lucky enough to have a Ron as their
- lifeguard... thanks also to: Jamie Pyper@Psion S.F., for turning
- me into a 3a junkie, Jack McCrae, for kick-starting me by sharing
- his Blackjack source code, David Wood@Psion U.K., for uploading
- the Sys$samp.ldd driver and documentation, and, whoever wrote the
- 3a OPL Programming Manual!
-
- bruce linde
- july 15, 1995
-
- ----------------------------
- History
- 2.0 thanks to John Woodthorpe i found out what was
- causing soft resets on some 3a's. somewhere along
- the way the driver got corrupted in the v1.1 upload,
- going from 6080 bytes (correct) to 6095 bytes (wrong!).
-
- apologies to anyone who got the corrupted driver!
-
- i also made the main window a little more user friendly
- and fixed some minor bugs/dumbnesses.
-
-
- 1.1 minor bug fix to allow running app from any drive
- (all files must still be on the same drive)
-
- 1.0 6 months ago i couldn't even spell 'programmer',
- and now i r one!
-