Yamaha DX7 Product Manual - Page 47
Key Synchronization ON or OFF When Sync is
View all Yamaha DX7 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 47 highlights
42 3. Press [PMD] (Pitch Modulation Depth), and adjust [DATA ENTRY] for a value of 50, again, just to begin. Now play a few notes. You probably won't hear any 8. There are several additional, related controls we have not yet explored: [SYNC] and [AMD] in the LFO section, and [MOD SENSITIVITY-AMPLITUDE]. change from when you started... even with [PMD] set at the maximum of 99! That's because while the LFO is now generating a reasonably fast (SPEED = 50) waveform (SINE) at a high intensity (DEPTH = 50) for use by the pitch modulation circuitry the "gate" is still closed to the frequency shifting inputs of the operators. And adjust the [DATA ENTRY] controls to see this And adjust the [DATA ENTRY] controls to see this 6. This is an improvement, assuming you're attempting to program a clarinet-like voice (we are for now), but the modulation is still much too fast to be natural. Press [SPEED] and then adjust the LFO speed to a more natural-sounding frequency... a value of 27 should be about right. Play a few notes and see how it sounds. Lets begin with the [SYNC] function. [SYNC] lets you use [DATA ENTRY] to turn LFO Key Synchronization ON or OFF When Sync is ON, the LFO wave form starts at the beginning of its cycle each time you play a note. When Sync is OFF the LFO just keeps running, and each note you play "catches" the modulating waveform wherever it happens to be in its cycle. This effect is difficult to hear at the moderate LFO speed and depth you have programmed, so let's temporarily increase the depth and slow down the speed. NOTE By now you should know how to set [SPEED], [DELAY], [PMD] and [MOD SENSITIVITY-PITCH] so TEMPORARILY change these values. Set a Speed of 3, a Delay of 0, a Depth of 99 and a Pitch Mod 4. Press [MOD SENSITIVITY PITCH], and now slowly raise the PMod Sensitivity value using the [DATA ENTRY] controls as you play a note. As the sensitivity value ranges from 0 (none or "closed gate") to 7 And adjust the [DATA ENTRY] controls to see this Sensitivity of 7. This "swooping" may sound strange, but bear with us. Temporarily reset these values as shown (maximum), the sound can quickly become weird. Leave the [MOD SENSITIVITY- PITCH] set at the lowest value that still gives you a noticeable effect, which is a value of about 2. 7. You have now set the LFO section to automatically add a small amount of vibrato to the voice, simulating the natural vibrato in a reed instrument. However, the effect is there all the time, whereas in a "real" instru- ment the vibrato might begin a short time after the note first becomes audible. This delayed onset of LFO modulation is available in the DX7 by using the LFO Try all values of [DATA ENTRY] while playing, then set at 2 [DELAY] button; press it and set the delay value to 75 with the [DATA ENTRY] controls. Now play, a few notes and listen after you press a key to the elapsed time before the vibrato commences. This is probably a bit too much delay so readjust it to a value of 55 for now. 5. This is probably giving you far too much pitch modulation, but if you reduce the sensitivity further, there may not be enough sensitivity for modulation from other controls (like the after touch, breath controller, etc.). Therefore, leave the sensitivity set at 2, and instead lower the Pitch Modulation Depth in the LFO section. Press [PMD] and then adjust the value to 15. And adjust the [DATA ENTRY] controls to see this 9. Press the LFO [SYNC] button and observe the dis- play The Sync should be ON. Play a note and hold the key down long enough to hear the modulation "swing" as the LFO wavform repeats. Then play the same note several times, holding the key down for a very brief time, and hear how each note starts changing pitch from the same initial frequency.