1. Make sure you have already installed his old voice mod https://tekkenmods.com/mod/953/heihachi-t4-5-6-voicemod
2. Use `TkDataPatcher` to extract assets from the `tkdata.bin` file, won't take you more than 5 minutes, simple & straight forward.
3. Go within this folder, `..\TEKKEN 7\TekkenGame\Content\Binary\mothead\bin\` and look for a file called `heimot.bin`. That is Heihachi's moveset data.
4. Make a backup of this file, when you would want to uninstall this voice-rearranger, just put back the original file.
5. Replace the `heimot.bin` file that I've provided in this `..\TEKKEN 7\TekkenGame\Content\Binary\mothead\bin\` folder.
6. Enjoy

NOTE: I've also provided the original file in case you forgot to make a backup of it. It's called `heimot_org.bin`
/////////////////////////////////////////////////////////
0 = hii
1 = khiyaa
2 = khiyaa
3 = hmphh
4 = hah
5 = yaah
6 = suryaa
7 = khaouuu
8 = seeeah
9 = haa-daa
10 = hashish
11 = laugh
12 = silent
13 = haa-daa
/////////////////////////////////////////////////////////
VOICE CHANGELOG
MOVE ID | MOVE NAME | NEW VOICE VALUE | WHAT GOT CHANGED IN WHAT MOVE
1481 He_hadoh03H 6 [Iron Hand: Change last voiceclip extraprop to 6 'Suryah']
1572 He_rprp01 4 [Demon Backhand Spin (2,2) last hit: Disable last voiceclip + Change extraprop voice clip to 4]
1580 He_SHINJYUK3 0 [Demon Lair (1,b2,4) last hit: Change last voiceclip extraprop to 0x0 (or disable property)]
1582 He_rprp00 -1 [Demon Slayer (1,2,2) last hit: Disable last voiceclip]
1587 He_s_rplp 6 [Kidney Smasher (SS+2,1) last hit: Change last voiceclip to 6]
1592 He_lk00 4 [Monzenbarai (3,4) 1st hit: Change last voiceclip to 4]
1593 He_lkrk00 4 [Monzenbarai (3,4) 2nd hit: Change last voiceclip to 4 + Change 1st voice extraprop to 999 to disable it]
1594 He_rk00 4 [Roundhouse Kick (n4): Change last voiceclip to 4]
1628 He_yamazuki 3 [Twin Hammer (b12): Change last voiceclip to 3]
1634 He_44LRP 3 [Diety Slayer (b,B12): Change last voiceclip to 3]
1635 He_lk01B 4 [Hooking Crescent Kick (b3,3) 1st hit: Change last voiceclip to 4]
1637 He_lk02B 4 [Hooking Crescent Kick (b3,3) 2nd hit: Change last voiceclip to 4]
1638 He_rk00B 4 [Shingetsusen (b4): Change last voiceclip to 4]
1639 He_s_tlp00 8 [Quick Iron Fist (ws1): Disable last voiceclip] (Or change it to 8)
1641 He_s_trp00 8 [Dark Thrust (ws2): Change last voiceclip to 8 + disable last voiceclip extraprop]
1671 He_s_lprk 8 [Change last voiceclip to 8]
1689 He_t_slk00 6 [Jichinsai (d3): Change 1st voiceclip extraprop to 6]
1691 He_dwki 4 [Geta Stomp (d4 on downed opp.): Change last voiceclip to 4]
1704 He_dslp 6 [Thunder God Fist (f,n,d,df1): Change voiceclip to 6]
1710 He_sjk02 6 [Jumping Mid Kick (f,n,d,df3): Change 1st voiceclip extraprop to 6]
1756 AteN_move_1 6 [Heaven's Wrath (b14/b23): Change 1st extraprop voice to 6]
1813 He_hp2K_2n 6 [Headbutt Carnival (f,F14) for only male opponents: Change 1st voiceclip extraprop to 6]
2057 He_FLnage_n 10 [Neck Breaker (13): Change 2nd voiceclip extraprop to 5]
2061 He_FRnage_n 6 [Jumping Powerbomb (24): Change 1st voiceclip extraprop to 6 + Change 3rd voiceclip extraprop to 999]
2069 He_Bnagen 8 [Atomic Drop (backthrow): Change 1st voiceclip extraprop to 8]
2075 He_hp2_n2 6 [Stonehead (f,F12): Change 1st voiceclip extraprop to 6]
2079 He_wasinage_n 6 [Broken Toy (qcf13): Change 1st voiceclip extraprop to 6]
2169 He_SUPER_0 3 [Ki-charge (1234): Change 1st voiceclip extraprop to 3]
2171 He_sjk0S 6 [Secret Step Hell Axle (1234,d,u,uf3) 1st hit: Change last voiceclip to 6]
2280 He_lkrk00_7CS 4 [BOSS Monzenbarai (3,4) 2nd hit: Change last voiceclip to 4 + Change 1st voice extraprop to 999 to disable it]
2281 He_rk00_7CS 4 [BOSS Roundhouse Kick (n4): Change last voiceclip to 4]
2282 He_rk00B2_7CS 4 [BOSS Shingetsusen (b4): Change last voiceclip to 4]
2284 He_rprp01_7CS 4 [BOSS Demon Backhand Spin (2,2) last hit: Disable last voiceclip + Change extraprop voice clip to 4]