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-
- TX81Z VOICE/PERFORMANCE EDITOR AND LIBRARIAN
- Version 2.01 Oct 1,1987
-
- ======
- BUGS
- ======
-
- While in the Voice Editor, you may notice that changing the Fine
- Frequency Range for operators 2, 3, and 4 doesn't work. The value
- is changed on the screen, but the synthesizer is not updated.
- Instead, operator 1, 2, or 3 will be turned on or off. I've
- talked to Yamaha about this, and they say my program or
- synthesizer is defective, because no one else has reported the
- problem. I'm fairly certain the program is sending the correct
- data, since it works properly with every other parameter on the
- synthesizer. I've also written stand-alone programs to test every
- possible combination of parameter change that could be sent, and
- was never able to send Fine Frequency changes for those three
- operators. If anyone else experiences this problem, I would
- appreciate hearing from you. If you have a fix, I would really
- like to hear from you!
-
- -----
-
- Selecting voices or performances while holding keys on your
- keyboard down may cause the keyboard to lock up. When the left
- mouse button is clicked, the string $B0 $7B (all notes off) is
- immediately sent. This silences the Yamaha, but crashes my Casio.
- I tried sending a loop with individual note off events for all 127
- notes, which was good for the Casio, but bad for the Yamaha.
- Holding the button down too long would cause a Midi Buffer Full
- error on the Yamaha. While editing a voice or performance,
- however, there was time to send a note off for all notes, so the
- problem doesn't occur here. Moral - don't hold keys while
- changing voices.
-
- -----
-
- Not really a bug, but I didn't bother to set the colors to the
- best values for the program. The program looks best, and is
- easiest to read if you set your med res colors to white,black,red,
- and blue, with full intensity for each color. (At least it looks
- best too me - I find the green background difficult to watch for
- long periods of time.) The program runs in mono, but the Voice
- Editor Dialog is a little out of alignment. This can be corrected
- with an RCS by editing the tree EDVDIAL in the resource
- TXLIBR.RSC.
-
- =========================
- DX21/27/100 COMPATIBILITY
- =========================
-
- During the last re-write of this program, I tried to follow
- Yamaha's format exactly for all voice transfers and parameter
- changes. This means that most of the functions of this program
- should also be useable by DX21/27/100 owners. I can't verify
- this, since I don't have one of those synthesizers. If you do,
- and this program works, please let me know!
-
- In case it does work, I'm including page 48 from the TX81Z manual
- below. This should explain some of the differences between the
- synthesizers.
-
- -----
-
- The TX81Z uses the same 4-operator, 8-algorithm FM synthesis as
- the DX21, DX27, and DX100, and voice data can be transmitted and
- received between them. However, the TX81Z has a number of
- features that the DX21/28/100 does not.
-
- * The Frequency CRS(RATIO) adjustment is equivalent to the values
- programmable in the DX21/27/100. The FIN(RATIO) adjustment is
- additional precision available in the TX81Z. Also, the
- DX21/27/100 operators have no FIX mode.
-
- * The DX21/27/100 operators produce only sinewaves. When a TX81Z
- voice tht uses non-sinewave operators is loaded into a
- DX21/27/100, it will not sound the same.
-
- * EG RR. The Envelope Generator Release Rate on the DX21/27/100
- can be set to 0, whereas the TX81Z EG-RR minimum setting is 1.
- When voice data is received from a DX21/27/100, any EG release
- rates of 0 are set to 1.
-
- * EG-EG Shift is not a parameter on the DX21/27/100, and will be
- ignored when you load data from the TX81Z.
-
- * Parameters which the TX81Z does not have (PEG,chorus) will be
- set to Off or 0.
-
- * The TX81Z BC Pitch Bias of -50 to +50 corresponds to the
- DX21/27/100 BC Pitch Bias of 0-99. However, the curve is
- different. (Exponential, not linear.)
-
- -----
-
- John Davis
- 4501 61st
- Lubbock, TX 79414
-
- -----
-
-