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application notes title: u , ? em61 ?n (*.twf ) notes number: ap-EM61-0013C-V1 revised date: 13,march, 2002 revised version: 1.0 apply to chips: all chip (em61001 ~ em61500) apply to software: 2.0 u , ? em61 ?n (*.twf ) *** ? . ? : ?N twf file 1. u twf file ? 2. em61 twf file c play midi ?gPS 3. twf type x *** . em61 ??? play midi play midi I *** . user u??n play midi 1. u twf file: ? wav file ? ? wav2twf ? 2 . O?xOn( * .ist) , ??n(*.env) *** . f : u play ??n ?
??: ?N twf file 1. u twf file ? twf ? em61 ? (\instlib ? ) ??n , ?b em61 ?r ??a .user u , ????? . ?n?A? . ?A , t???w , u????N?? wav n ; A? , ? elan ?_l (wav2twf) , ?? wav nM?? , twf u . 2. em61 twf file c play midi ?gPS ? pc play midi r , ???? library, user ? ? , ? em61 play midi r , ?t em61 ? (\instlib ? ) ??n , user u? , ?? midi ????? , ????? . 3. twf type x twf type ??N :tone percussion. u twf ?? , ?Q?N twf type, twf type Q midi channel P . midi 16 channel, ? channel 10, ?N 15channel t play : _ channel10 V , V?? ??? ? , 48 ?? 48: hi_mid ton, 60 ?? 60: hide bongo, ?f , ?[ midi channel 10, ?V?????? ?F , ?N 15 channel t??? ; _ channel10 V , ?? ?? channel , V?? ??? , 48 c3, 60 c4 do. twf ?l???r , ? midi channel 10 play, ?r percussion ?uu percussion type ? twf; ? , twf midi ?l?r , ? midi channel 10 play, user ? tone type ?uu twf.
. em61 ??? play midi em61000 v2.0 ??t?? play midi ?I , user ? em61 ??? play midi, em61 ??? midi ?l? , ??? em61_ midi_note ? ? . fig 2.1 f : 1 em61 ice c emv60kb B? 2 play midi I , x??? mid file, click , click ?? , ?_J mid file ?? em61 ??? fig.2.2 x??? mid file
3. debug tab F ?ice download program data ok? r , midi _? play, ?? , ? emv60kb k2, play ?? , t k1 fig.2.3 ice download program data ok 4. Q midi, ? exit debugging K? , ??f 2 x?? midi play fig.2.4 exit debugging
. user u??n play midi i. u twf file: ? 8 bit wav file ? ? wav2twf ? 1 ? wav file : ? user tool ( x???w , sound forge,cool edit ??) [*] tone type ?u( O loop ??) (1)? 8 bit mono wav(4k~44khz) : ? 8 bit wav( 16 bit wav) ,?? wav ??l, e sound forge : fig3.1 ? wav ?l 12khz, ? c3 fig.3.1 ? 8 bit mono wav , 12khz
(2)???(loop KcM? 0): play as sample I????? , ?_;_J , ? loop ^??ccKc?, fig.3.2 c 1378 , Kc 1469. fig3.2 edit wav: ??? (3) loop c? 128 : fig3.2 , ? loop c? 1408(?n^ 30 c silence), Kct 1499,fig3.3 fig3.3 edit wav: loop c? 128
(4) delete loop Kc? data,save: delete1500 c( 1500) ? data ,save *.wav, fig3.4 040_c3_ok.wav fig3.4 edit wav: delete loop Kc? data ?^?? fig3.5 (k= integer) *.wav=a+b c:delete ---- ? a: attack+decay b:looping area fig3.5 loop start address = 128*k
[*] percussion type ?u ( O loop ??,?, ? midi ? channel 10) (1)? 8 bit wav(4k~44khz) ,Yc 00 (2)save *.wav 2 ? wav2twf: ? elan tool wav2twf ? em61 ?nAu?_l , user ? em61 b? \exe ? , cx wav2twf. exe, ?F? fig.3.6 wav2twf
[*] A? tone type ? (1) _ wav2twf ? , select file, cx???^ tone type ?u ? wav file. fig.3.7 select file (2) ?? wav ?PY : type= 1 , loop start address , sampling rate, base note, delta value, sync , (??? tab I?, begin note c end note ^) fig.3.8 ?? wav ?PY : *base note (c0~c8) :??r, do=c4=60 ? *delta value(-999~999):delta value= + n() l=a( ??l)+ a*n/1000 *sync(?):? envelope ??c looping c? . ?O sync=0(? ) , loop L , ^ 1000 crO 1 ^
(3) save file ,x?? ,save *.twf , ?r??@? ? twf ?PY ,user ?Bz?Y?_ , loop type e 128 c? , loop L >128 r long loop , loop L <=128 r short loop fig3.9 save file [*] A? percussion type ? (1) _ wav2twf ? , select file, cx???^ percussion type ?u ? wav file. (2) ?? wav ?PY : type =0 , sampling rate, ( loop start address, delta , syn 0 ,base note, begin note c end note ^) fig3.10 ?? wav ?PY (3) save file ,x?? ,save *.twf
ii. O*.ist, *.env: ****? user ? project . ist ?xOn , *.env ??On (1)open ? play midi project (2)*.ist ,_?? twf ?** ** l? ? ** l?{l?? ** **? env ?x , ? em61ist_note_v2.0.doc (3)? em61 default ? env , ? envelope ?x , ? em61env_note_v2.0.doc (4)? mid i ,? midi A?w?,? midi ?? ???? . (5) midi file save _??cn , ? project . (6)B em61 ice, em61 environment ,open project , rebuil d ,go ? , play em61 user ?u twf (7) A???Bm,?_
. f : u play ??n ? ? user ? project, u@?n? , ?? } ? 1. twf file tone type ? percussion type 2. @??n?O?? , ?? em61 library ? n? 3. V? midi r , ?? ? ??? : ???? , ??????? , ??? ( ??l??n ), ?? tone type ? twf file : u twf file O ist,env V midi play midi project u twf file( tone type u ) [*] ?A tone type ? 1. ? sound forge ??? 8bit mono wav file, fig4.1, nL 3946, T 0 3945 fig4.1: 8 bit ,mono,14khz ??
2. ???:???l,??? ? , ?? tone type ?? , ??n?? silence ?? , fig4.2 c silence, ??c 3946, Kc 3947 fig4.2 3 loop c? 128 : fig4.2 , ? loop c 3968( 3946 ? 22 c silence),loop Kct 3969, ? fig4.3 fig4.3
4 delete loop Kc? data,save: file ???] data , ? save *.wav, fig4.4 dog_0.wav. fig4.4
[*] A tone type ? . 1 _ wav2twf, cx dog_0.wav ?PY : tone type ?o base-note ? , ?HK??l , ??? . c4 midi V c4 play 14000hz ?? wave form, ? g4, ??? midi V g4 play 14000hz ?? wave form, user midi ?Q . fig4.5 2 save file, dog_c4.twf, ?r??@???Y fig4.6
O ist,env 1. open project ? ist file: ?O??? play midi em61 project, K_ ? project ? *.ist file em61 ?^ default ist 2. ???o?u?n:^ *.ist [instrument list] ,12 M tone group c 6 M percussion group @? em61 library tone type twf c percussion type twf. dog_c4.twf tone type tone group e?x?? , 120, ? txxx,(xxx ? 0~127) t120 fig4.7 ?? t120 3 ?a??x : [t120] ?x , K? name, ? (scale), scale ??? fig4.8 t120 ??x
4. ? ? [template list] ? ? twf ?c envelope ?:? fig4.9 O dog _c4.twf ? c:\old-data\ ? . envelope=14( em61v2.0 ? env 21 , user ? 0~20 ?gx?m envelope.) fig4.9
V? midi V? midi r , V? : 1. _? : dog_c4.twf *.ist O?? t120, V play ? midi, ???? 120, ? midi port ? general midi, { patch ? 120,gm 120 guitar fret noise(fig4.10), ??? gm Qc?? , ???? midi track play ? 2. _? : dog_c4.twf *.ist O play c3~d6 ? , c3~d6 ?????? , ? e6 , ??N? ? Q (1) ist ? scale { c3~e6 (2) midi {? fig4.10 B em61 ice em61 environment ,open ? project , rebuild ,go ?, play midi r , ? dog_c4.twf .

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