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Altering the mood of your song or patterns.

Mood is changed by what "mode" your music is written in. Seven distinct moods/feelings, from godly/ethereal/ambient (Lydian), down to pure evil (Locrian).

This is the table of modes in order of feeling/mood:

; Modes                Intervals
;                    1 2 3 4 5 6 7
Lydian:         defb 0,2,4,6,7,9,11
Ionian:         defb 0,2,4,5,7,9,11
Mixolydian:     defb 0,2,4,5,7,9,10
Dorian:         defb 0,2,3,5,7,9,10
Aeolian:        defb 0,2,3,5,7,8,10
Phrygian:       defb 0,1,3,5,7,8,10
Locrian:        defb 0,1,3,5,6,8,10

You can use this table to adjust the "spelling" of the scales to change moods. Ionian is the standard Major scale, Aeolian is the standard Minor scale. Lydian, Ionian and Mixolydian are Major scales. Dorian, Aeolian and Phrygian are Minor scales. Locrian is known as the half-diminished scale. It has what's called the "satanic" interval banned by the Christian monks, the flatted 5th.

Mixolydian is what most "happy" blues uses. Dorian is for "jazzy". Phrygian is "Spanish/flamenco", lots of heavy metal uses it also. There are lots of other non standard modes like Phrygian Dominant, which has a Major 3rd, the 3rd interval raised one semi-tone, the standard Flamenco/Spanish scale, 0,1,4,5,6,8,10.

The table can be extended to 13 intervals for the spellings of all known chords. Standard chords are just the 1st, 3rd and 5th intervals. But there are also 7th, 9th, 11th, 13th chords in both Major and Minor flavors. This would be useful for having ornament presets.

Yes, also if you make your patterns with no gaps it will get smaller (Beepola Edit Pattern shrink pattern/2), just play at slower tempo.

I'm saving a version for small data/player. And making a new version which has vibrato/pitch bend for channel 2 notes. I've moved channel 2 to channel 3. Channel 2 column will contain pitch bend adjustments for channel 3. So it will be about 2/3rds the size song data of QChan.

Edit: Or with lots of editing to how the player reads song data, songs could get MUCH smaller. Similar to how the SpecialFX engine does it. Each row will get bigger, but the length of the pattern will get much smaller. And having loops for bass lines and drums will shrink it further. Player will get much bigger but songs will be tiny compared to now.

Edit2: I transposed Eve Redux down an octave and rebuilt the frequency table up an octave. The demo2 now plays all the notes. All the notes are in the same range as Tritone. Updated tap attached.

Next thing I want to try is a vibrato and/or portamento. Maybe also a way of having some arpeggio presets for major/minor/7th/9th chords etc.

I've just recently been looking for simple 2 channel engine with decay, for some in-game music, in a very simple game.

Been trying to cut QChan down to 2 channels, no drums, might be what I need. Small player and small music data.

Having been away from speccy and coding for some years, I'm a bit rusty at this. And I've never written sound routines before, just used what's available. Currently going through QChan with debugger to document the code so I know exactly what's going on.

Edit: Just seen utz tutorial on writing a routine, so I'm going to do that instead. Cheers utz, very helpful that...

Lyndon Sharp goes by the name Nodalmighty on the SpecNext forums.

He just quoted one of my posts here: http://www.specnext.com/forum/viewtopic … 0d7b#p1780

I'm here.  Been working on other non speccy stuff.

I don't have any idea about how to get Beepola to export drums above what's available for SFX engine.
The way I'd do it is make a binary song data to assembly listing converter in C.  Providing drums above 5 are written in the binary.  Like I did for converting bbsong's to Vortex Tracker text format.

I've made 7 new patches.  They're based on the original tempos from 20 to 14.
They're divisable between 3/4 and 4/4, 4/4 and 3/4 time signatures.  And allow for at least 4x speed increase for doing super fast effects.

https://dl.dropboxusercontent.com/u/949 … atches.zip

                          500.56  473.62  350.14  287.02  276.28  243.19  266.31
  Ticks Per Row  Beepola  20to14  19to13  18to12  17to11  16to10   15to9   14to8
              1       20     370     377     419     455     463     491     471
   1.3333333333       19     408     417     474     522     532     570     542
            1.5       18     427     437     501     555     566     609     578
              2       17     485     497     583     655     670     726     685
   2.6666666667       16     561     578     692     787     808     883     829
              3       15     599     618     746     854     877     961     900
              4       14     713*    739     909    1053    1084    1197    1115
   5.3333333333       13     865     900*   1127    1319    1360    1510    1401
              6       12     942     980    1236*   1452    1498    1667    1544
              8       11    1170    1222    1563    1850*   1912    2137    1974
  10.6666666667       10    1475    1544    1998    2381    2464*   2764    2547
             12        9    1627    1705    2216    2647    2740    3078*   2833
             16        8    2084    2188    2869    3444    3568    4019    3692*
  21.3333333333        7    2693    2832    3740    4507    4672    5273    4837
             24        6    2998    3154    4176    5038    5224    5900    5410
             32        5    3912    4120    5483    6632    6880    7781    7128
  42.6666666667        4    5131    5408    7225    8757    9088   10290    9419
             48        3    5740    6052    8096    9820   10192   11544   10564
             64        2    7568    7984   10709   13008   13504   15307   14000
  85.3333333333        1   10005   10560   14194   17259   17920   20324   18581

If CPU and AY speed was read, there wouldn't be a need to provide a time/length for the tune.  It could be calculated how long the tune plays for.

The only thing I need to know is what speed CPU/AY is used on the website.  So I can put the correct time in the AY header.  So the tunes play for the correct length on the website.

I did a google search for Pentagon timings, but only found different AY timings for Timex.  I have the different timings for 48k/128k models, but not uncontended.  If I knew the magic numbers, I could just calculate the length myself for the AY header.

Edit:  Or, allow looping of songs with a fade timeout.  AY players do loop correctly, regardless of the time entered in the AY header.

The only details at the moment is Audio AY-3-8912 or FM2149 chips (selectable) with stereo output.

Einar Saukas posted some details here, he's in contact with the author Victor Trucco:
http://www.worldofspectrum.org/forums/discussion/52606

The 1.75, 3.5 and 7 ticks per row are redundant.  So I'm removing them.  These will be the final tempo's.  It allows to change from 8, 12, 16, 24, 32, 48, 64, 96 etc.

                       118.4 177.6 236.8
 Ticks Per Row Beepola            
             1      20   739   578   498
          1.25      19   860   659   558
   1.333333333      18   900   685   578
           1.5      17   981   739   618
   1.666666666      16  1061   793   659
             2      15  1222   900   739
           2.5      14  1464  1061   860
   2.666666666      13  1544  1115   900
             3      12  1705  1222   981
   3.333333333      11  1866  1329  1061
             4      10  2188  1544  1222
             5       9  2671  1866  1464
   5.333333333       8  2832  1973  1544
             6       7  3154  2188  1705
   6.666666666       6  3476  2403  1866
             8       5  4120  2832  2188
            10       4  5086  3476  2671
  10.666666666       3  5408  3691  2832
            12       2  6052  4120  3154
  13.333333333       1  6696  4550  3476

I'll redo the patches today.  And release the files to patch Beepola, instead of the actual Beepola.exe's.

I've just patched the SpecialFX frequency table.

The one you found was just for Beepola playback, compiling a tap, bin, or source listing and it reverted to the old note table.

For compiling, the SpecialFX engine builds from source which is stored as a Unicode text string at around #22BE20 in Beepola.exe.  I patched the text, and now it compiles with the new frequency table.

Going to make a patcher, so I can easily apply it to my already patched tritone tempo fixes.

I'm having a similar problem with the Tritone engine.  I wanted to patch the engine to remove the extraneous out instruction after the soundloop, before the key detection, that causes clicking at high speeds.  I can patch the Beepola playback, but on compiling the out ($fe),a is still there.