Any reason why these have to be 4bit ...can't we go up to 8 or 16bit?
Yes you can. Since I have no way of creating 4 bit files, I tested replacing a standard wav I had created in audcacity in cosmo (think it was 16 bit).
I can confirm it played in game.
As stated in another thread, I believe step 1 would be to identify all sounds as they have multiple uses. The best way, I think, to accomplish this purpose would be to replace all 723 sound files in the game with spoken numbers and write down in what context they are used in-game by playing throughout the whole game. I had started the process of recording and naming all 723 files with numbers to the replce in-game but am currently stopped at 351 since its extremely boring and time consumming.
I had started previously an effort to indetify from memory the sound effect before it become apparent it wouldn't work out. Here's whà at I had (incomplete and quite possibly inacurate) :
0 Move cursor Menu
1 Load Save
2 Can't Load Save
3 Menu Back
4 Off Train / Squat
5 Potion
6 Ether
7 X Potion
8 Fire
9 Fire 3 ?
10 Bolt
11 Bolt 3 ?
12 Cure
13 Waves ?
14 Barret Shot ?
15 Barret Assault Gun
16 Monster Noise ?
17 Cloud Slash
18 Water buildup ?
19 Barret Gun ?
20 Jump Ladder
21 Monster Death
22 Hitting Metal
23 Ice
24 Monster Bite / Red XIII ?
25 Tifa move ?
26 Cloud big slash
27 Tifa Punch
28 Ice 3 ?
29 Gravity
30 Sleep ?
31 Open door / elevator
32 Wave ?
33 Regen
34 Tifa Hit
35 Limit Break Unleashing
36 Underwater Mako Reactor Backgrund Noise
37 Mako Reactor Backgrund Noise
38 Underwater reactor elevator descent
39 Energy Hit ?
40 Magic ? Transform ?
41 Elevator Moving
42 Random Battle Swirl
43 Tick ??
44 Save Game ?
45 Machine Gun
46 Steal
47 Jump ?
48 Battle Sound ??
49 Sword hitting metal
50 Activate alectronic button
51 Hit object ?
52 Open Hojo Specimen door
53 Mechanical door opneing
54 Tifa Swiping Face ?
55 Landing on feet
56 Passing out in snow
57 Energy Beam
58 Console Input
59 Alert Sound
60 Using Computer Sound
61 Jump ?
62 Bio ? / Vincent Transform ?
63 Buildup + explosion
64 Roulette ?
65 Electric buildup + blowout ?
66 Status Effect ?
67 Battle Effect ?
68 Full HP
69 Bolt 3 ALL ?
70 Rock Moving ?
71 Status Effect ?
72 Sleep ?
73 Quake ?
74 Energy sound ??
75 Tidal Wave ?
76 Energy buuildup + explosion ?
77 Wind
78 Energy buildup + explosion ?
79 Gravity ?
80 Gravity 3 ?
81 Bio 3 ?
82 Haste ?
83 Petrify ?