Multi-effects for electric piano (Part 3)

This is part 3 of a multi-part series about PSR/Tyros effects for electric piano.

PSR effects for electric piano (Part 1) presents a basic approach to grunging up an electric piano sound with distortion (amp simulation). Editing and saving PSR effects (Part 2) describes how to save a custom PSR/Tyros effect to USER EFFECT memory. In this part, I’ll cover the REAL DISTORTION multi FX algorithm.

If you’re a real gear-head, you probably heard about the new Yamaha Reface mini keyboards including the Reface CP, which is rich in electric pianos. (See my snap-review of the Reface CP.) Aside from good samples, it’s the effects that make the Reface CP a winner. The Reface CP has an effects chain driven by the basic EP voice:

              Tremolo       Chorus       Digital Delay
   Drive -->     X     -->     X    -->         X       -->  Reverb
                Wah         Phaser        Analog Delay

Switches select between Tremolo and Wah (or pass-through), between Chorus and Phaser (or pass-through), and between Digital Delay and Analog Delay (or pass-through). Thus, either Tremolo or Wah is active, but not both at the same time, etc. Each effect has one or two knobs that control the most basic parameters:

  • Drive: Amount of distortion (including none)
  • Tremolo/Wah: Depth and Rate
  • Chorus/Phaser: Depth and Speed
  • Digital Delay/Analog Delay: Depth and Time
  • Reverb: Depth (including none at all)

The front panel controls let you tailor your sound, e.g., maybe a little distortion (Drive) followed by Tremolo and some Reverb.

This article shows you how to make a similar effects chain on your PSR/Tyros. I assume that reverb is applied by the PSR/Tyros REVERB effect block, so I won’t discuss reverb here.

If you have a late-model Yamaha arranger workstation (PSR-S950 or later, Tyros 5 or later), Yamaha have already done much of the work for you. These workstations are equipped with REAL DISTORTION effects. One of the REAL DISTORTION effect types is a multi-effect. On the PSR-S950, look for the effect presets called “MLT DS SOLO,” etc. The “MLT” stands for “MULTI.”

A little product family history. The REAL DISTORTION effects first appeared in the Version 1.5 Motif XF upgrade. Yep, these are among the latest effects in the Motif series. Yamaha implemented all of these effects in the Tyros 5 and about half of these effects in the S950. Yamaha added the rest of the REAL DISTORTION effects to the S970. Fortunately, S950 owners have the versatile “Multi FX” algorithm (effect type).

If you don’t have REAL DISTORTION effects, you’re not totally out of luck. Look in the Data List manual and find combination effects (distortion plus delay, etc.) and use them instead. You won’t have as many effect stages, but the approach still applies.

The REAL DISTORTION MLT effect chain is quite complete:

                                                  Vibe       Chorus
Compressor --> Wah --> Distortion --> Speaker --> Phaser --> Flanger
                                                  Tremolo    Delay
                                                             Echo

The effect chain is really intended for guitar, but hey, people in the sixties and seventies put electric pianos through stomp boxes and guitar amps.

There are six REAL DISTORTION multi-effect presets: MLT DS SOLO, MLT DS BASIC, MLT OD CHO, MLT CR WAH, MLT OLD DLY, and VINTAGE ECHO. Use these as starting points for your experiments. I suggest starting with VINTAGE ECHO as it is the cleanest of the lot. Do what guitarists do — dive in and tweak.

Here is a list of the parameters and the allowed values. See the full information in the REAL DIST section of the Data List manual.

#   Parameter      Display
--  -------------  ---------------------------------------------
1   Comp. Sustain  Off, 0.1 - 10.0
2   Wah Sw         Off, Wah Pedal, Auto+Full, Auto+Mid,
                   Auto+Light, Auto-Full, Auto-Mid, Auto-Light
3   Wah Pedal      0-127
4   Dist Sw        Off, Overdrive, Distortion1, Distortion2,
                   Clean, Crunch, Higain, Modern
5   Dist Drive     0.0-10.0
6   Dist EQ        High Boost, Mid Boost, Mid Cut 1, Mid Cut 2,
                   Mid Cut 3, Low Cut 1, Low Cut 2, High Cut,
                   High/Low
7   Dist Tone      0.0-10.0
8   Dist Presence  0.0-10.0
9   Output         0-127
10
11  SP Type        Off, Stack, Twin, Tweed, Oldies, Modern, Mean,
                   Soft, Small, Dip1, Dip2, Metal, Light
12  LFO Speed      0.1Hz . 9.925Hz (table#27)
13  Phaser Sw      Off, Standard, Wide, Vibe, Tremolo
14  Delay Sw       Off, Delay M, Echo1 M, Echo2 M, Chorus M,
                   Dl Chorus M, Flanger1 M, Flanger2 M,
                   Flanger3 M, Delay St, Echo1 St, Echo2 St, 
                   Chorus St, Dl Chorus St, Flanger1 St, 
                   Flanger2 St, Flanger3 St
15  Delay Ctrl     0-127
16  Delay Time     0-127

The parameters look overwhelming, so let’s break things down.

There are six “switches” that turn effects on and off. In a few case, the switches also select the flavor of the effect when it is turned on. For example, “Dist Sw” turns off the effect in the chain or turns on one of the seven available distortion types (Overdrive, Distortion1, etc.) In addition to switches, there are effect-specific knobs. “Dist Drive,” “Dist EQ”, “Dist Tone” and “Dist Presence,” for example, change the sonic characteristics of the distortion effect.

The “Delay Sw” acts like one of the switches on the Reface CP. “Delay Sw” disables the effect stage, or it turns on a delay, echo, chorus or flanger effect. Some effects are mono (M) and some effects are stereo (St). The “Phaser Sw” switch disables the stage (off) or it turns on a phaser (type: standard, wide, vibe) or tremolo effect.

The Low Frequency Oscillator (LFO) Speed parameter controls the effects that need modulation: phaser, chorus, flanger, tremolo, etc. You need to dial in the appropriate LFO frequency for the modulation effect type.

Wow, that’s a lot of choices! Here is a table of the parameter values for each preset.

    MSB/LSB --->  95/32     95/33     95/34     95/35     95/36     95/37
#  Parameter     DS SOLO   DS BASIC   OD CHO    CR WAH   OLD DLY   VINT ECHO
-- ------------- --------  --------  --------  --------  --------  ---------
1  Comp. Sustain   3.6       3.2       3.6       3.6       4.0       3.6
2  Wah Sw          Off       Off       Off     Auto+Mid    Off       Off
3  Wah Pedal        0         0         0         0         0         0
4  Dist Sw       Distort1  Distort1 Overdrive   Crunch    Clean     Clean
5  Dist Drive      5.0       4.1       3.8       5.0       5.0       6.6
6  Dist EQ       Hi Boost  MidBoost  MidCut2   LowCut1   Hi Boost  MidBoost
7  Dist Tone       2.4       5.6       5.6       4.2       3.0       4.6
8  Dist Presence   4.8       5.6       5.0       5.2       5.6       5.0
9  Output           55        60       102        95       121       113
10
11 SP Type        Twin      Stack     Tweed     Stack     Oldies    Twin
12 LFO Speed      0.1Hz     0.1Hz     0.1Hz    1.167Hz    0.1Hz    0.142Hz
13 Phaser Sw       Off       Off       Off       Off       Off      Off
14 Delay Sw      Echo1 St  Delay St  ChorusSt  Delay M   Delay M   Echo1 M
15 Delay Ctrl       40        26        20        13        24       20
16 Delay Time       48         2        46        36        20        6

These parameter values should give you some starting points for exploration.

If you’re not a guitarist, terms like “presence” may not be meaningful to you. Here are a few helpful definitions taken from Yamaha documentation.

  • Drive: Determines the extent to which the sound is distorted.
  • LFO Speed: Frequency of delay modulation (chorus, flanger), Modulation frequency (tremolo), Frequency of phase modulation (phaser), Frequency at which wah filter is controlled (wah)
  • Delay Time: Determines the delay of the sound in absolute time.
  • Output: Determines the level of the signal output from the effect block.
  • Presence: This parameter of the Guitar Amp effect controls high frequencies.
  • SP Type: Selects the type of speaker simulation.

Why start with VINTAGE ECHO? This preset adds a modest amount of compression and sends the signal through the Clean guitar amp model. The Clean model does not dirty up the sound too much. Rock guitarists — especially guys with mullets — like a lot of distortion. Electric piano, not so much. The Mid Boost adds guts to the midrange frequencies making an EP sound fuller, with guts. Finally, the distorted signal is sent into a Twin speaker model and then a light echo. The Twin model sounds like it would be Fender Twin-ish and similar to the kind of speaker used with a Rhodes EP.

I’ll close with an example USER EFFECT that I called “DirtyChorus.” The chain starts out with compression and a little bit of overdrive and mid-range boost. The distorted signal goes into a nice stereo chorus. I copped the chorus paremeters from the MLT OD CHO preset. I tried different speaker models and liked the sound of the Mean speaker type. Finally, I dialed up the output level to compensate for the low amount of overdrive.

    Comp Sus       5.0
    Wah Sw         Off
    Wah Pedal      0
    Dist Sw        Overdrive
    Dist Drive     1.4
    Dist EQ        Mid Boost
    Dist Tone      3.2
    Dist Presence  1.3
    Output         120
    SP Type        Mean
    LFO Speed      0.1Hz
    Phaser Sw      Off
    Delay Sw       Chorus St
    Delay Control  20
    Delay Time     46

Dist Drive can be increased before the distortion sounds guitar-ish. Generally, the output level must be lowered when more drive is applied. Clipping-induced distortion is not pretty. Of course, if you like that sort of thing, please carry on.

PSR effects for electric piano (Part 1)
Editing and saving PSR effects (Part 2)
Multi-effects for electric piano (Part 3)
Copy PSR DSP effects (part 4)

All site content is Copyright © Paul J. Drongowski unless otherwise indicated.

PSR effects for electric piano (Part 1)

A common complaint about the electric pianos on the Yamaha PSR arranger workstations is their lack of “guts” or “grit.” The voice samples are reasonably good, but the effects programming is vanilla and way too polite, especially for rock and soul styles. Here is a table showing the default DSP effect for some of the electric piano voices in the PSR-S950:

    PSR-S950 voice  Category     Effect
    --------------  ----------   -----------------------
    SparkleStack    CHORUS       CHORUS3
    SweetDX         CHORUS       CHORUS3
    BalladDX        CHORUS       ENS DETUNE1
    DX Dynamics     CHORUS       CHORUS2
    BalladBells     CHORUS       CHORUS3
    SuitcaseEP      CHORUS       CELESTE2
    VintageEP       TREMOLO      EP TREMOLO    [DSP off]
    CP80            CHORUS       CHORUS3
    StageEP         CHORUS       CELESTE2
    SmoothTine      SPATIAL      EP AUTO PAN
    ElectricPiano   SPATIAL      EP AUTO PAN   [DSP off]
    Clavi           DISTORTION   DIST SOFT1
    WahClavi        WAH TCH/PDL  CLAVI TC.WAH
    PhaseClavi      PHASER       EP PHASER2

You can see that most of the voices use a chorus effect. In two cases, the DSP effect is turned off by default. (You need to turn it on using the [DSP] front panel button.) The Clavinet voices are a little more fun and use distortion, wah and phaser.

Chorus does not add much “heft” to a voice and it doesn’t add grit. Compression, mid-range boost (EQ) and overdrive are better choices when you need a punchy and/or grungy electric piano sound.

Let’s take a look at the effects programming for a few electric piano voices on the Yamaha MOX synthesizer workstation. The basic voices drive two insert effects connected in series:

    MOX voice             Insert A     Insert B
    --------------------  -----------  -----------
    Crunchy Comp          MltBndComp   CompDistDly
    Vintage Case          AmpSim 2     Auto Pan
    Chorus Hard           ClassicComp  SPX Chorus
    Drive EP AS1          AmpSim 2     Auto Pan
    Natural Wurli         AmpSim 1     Tremolo
    Wurli Distortion AS1  Tremolo      CompDistDly

On the MOX, every voice uses compression, amp simulation or distortion, even the voices employing the evergreen tremolo, pan and chorus effects.

At this point, PSR users tend to throw up their hands and say, “Well, that’s the Motif series!” and back away. Yamaha — bless them — share technology between workstation products. Quite often, you can find the equivalent PSR effect algorithm for an MOX (MOXF) or Motif algorithm.

Consider the MOX “AmpSim2” algorithm. This algorithm shares the same parameters as the PSR “DISTORTION AMP SIM2” algorithm. Here is a table showing the corresponence between MOX and PSR.

    MOX parameter  PSR parameter  MOX value
    -------------  -------------  ---------
    Preset         n/a            Stack1
    AmpType        AMP Type       Tube
    OverDr         Drive          16
    OutLvl         Output Level   70
    LPF            LPF Cutoff     6.3KHz
    Dry/Wet        Dry/Wet        D<W30

The parameter values given here are taken from the MOX “Drive EP AS1” voice. Bring up a PSR voice like “VintageEP,” edit its DSP effect and replace the tremolo effect with “AMP SIM2.” Plug in these values, listen and tweak!

My second example is taken from the MOX “Natural Wurli” voice. The MOX effect algorithm name is “Amp Sim1”. The equivalent PSR effect algorithm is “DISTORTION V_DIST WARM” and its siblings. Here is the equivalency table:

    MOX parameter  PSR parameter  MOX value
    -------------  -------------  ---------
    Preset         n/a            Stack2
    OverDr         Overdrive      2%
    Device         Device         Vintage tube
    Speaker        Speaker        Stack
    Presence       Presence       +10
    OutLvl         Output Level   53%
    Dry/Wet        Dry/Wet        D<W1

Again, change the PSR DSP effect to “V_DIST WARM” and plug in the values. Then, tweak away.

The final example is a multi-effect taken from the MOX “Wurli Distortion AS1” voice. The MOX effect algorithm is “CompDistDly” that is a compressor, distortion and delay effect chain. The equivalency table is:

    MOX parameter  PSR parameter         MOX value
    -------------  --------------------  ---------
    Preset         n/a                   Hard1
    OverDr         Overdrive             15%
    Device         Vin_tube              Vintage tube
    Speaker        Stack                 Stack
    Presence       Presence              +10
    DelayL         Delay Time L          307.3ms
    DelayR         Delay Time R          271.7ms
    FBTime         Delay Feedback Time   306.6ms
    FBLevel        Delay Feedback Level  +31
    FBHiDmp        Feedback High Dump    0.8
    OutLvl         Output Level          22%
    DlyMix         Delay Mix             0
    Compress       n/a                   -29dB
    Dry/Wet        Dry/Wet               D<W12

The almost equivalent PSR effect algorithm is “DISTORTION+ V_DST H+DLY”. The PSR algorithm is missing the compression component (parameter). If you want compression, then consider one of the other PSR distortion algorithms with mono delay.

Keep thinking “multi FX.” I’m going to visit the REAl DISTORTION multi FX algorithm in a future post.

Some of the MOX voices use VCM effects. I didn’t deconstruct the voices with VCM effects because my S950 doesn’t have them. However, if you have VCM effects, for heaven’s sake, use them!

Learn how to save your new creation in Editing and Saving PSR Effects (Part 2).

PSR effects for electric piano (Part 1)
Editing and saving PSR effects (Part 2)
Multi-effects for electric piano (Part 3)
Copy PSR DSP effects (part 4)