Cry "echo" is actually the upper byte of pitch (now a word).

audio/engine.asm

@@ -828,7 +828,7 @@ Functione8466: ; e8466
 	add hl, bc
 	bit 4, [hl]
 	jr z, .vibrato
-	ld hl, $0027
+	ld hl, Channel1CryPitch - Channel1
 	add hl, bc
 	ld e, [hl]
 	inc hl
@@ -1758,7 +1758,7 @@ MusicE6: ; e88e4
 	ld hl, Channel1Flags2 - Channel1
 	add hl, bc
 	set 4, [hl]
-	ld hl, $0028
+	ld hl, Channel1CryPitch + 1 - Channel1
 	add hl, bc
 	call GetMusicByte
 	ld [hld], a
@@ -2367,7 +2367,6 @@ _PlayMusic:: ; e8b30
 PlayCry:: ; e8b79
 ; Play cry de using parameters:
 ;	CryPitch
-;	CryEcho
 ;	CryLength
 	
 	call MusicOff
@@ -2416,7 +2415,7 @@ PlayCry:: ; e8b79
 	add hl, bc
 	ld a, [CryPitch]
 	ld [hli], a
-	ld a, [CryEcho]
+	ld a, [CryPitch + 1]
 	ld [hl], a
 	
 ; No tempo for channel 4

battle/anim_commands.asm

@@ -1327,15 +1327,15 @@ BattleAnimCmd_E1: ; cc807 (33:4807)
 	ld b, a
 
 	push hl
-	ld hl, CryPitch ; $c2b0
+	ld hl, CryPitch
 	ld a, [hli]
 	ld h, [hl]
 	ld l, a
 	add hl, bc
 	ld a, l
-	ld [CryPitch], a ; $c2b0
+	ld [CryPitch], a
 	ld a, h
-	ld [CryEcho], a ; $c2b1
+	ld [CryPitch + 1], a
 	pop hl
 
 	ld a, [hli]
@@ -1363,11 +1363,11 @@ BattleAnimCmd_E1: ; cc807 (33:4807)
 ; cc871 (33:4871)
 
 Datacc871: ; cc871
-; +pitch, +echo, +length
-	db $00, $00, $c0, $00
-	db $00, $00, $40, $00
-	db $00, $00, $00, $00
-	db $00, $00, $00, $00
+; +pitch, +length
+	dw 0, $c0
+	dw 0, $40
+	dw 0, $00
+	dw 0, $00
 ; cc881
 
 

home.asm

@@ -1793,7 +1793,7 @@ Function37f3:: ; 37f3
 	ld a, [hli]
 	ld [CryPitch], a
 	ld a, [hli]
-	ld [CryEcho], a
+	ld [CryPitch + 1], a
 	ld a, [hli]
 	ld [CryLength], a
 	ld a, [hl]

home/audio.asm

@@ -173,7 +173,7 @@ PlayCryHeader:: ; 3be3
 	ld a, [hli]
 	ld [CryPitch], a
 	ld a, [hli]
-	ld [CryEcho], a
+	ld [CryPitch + 1], a
 	ld a, [hli]
 	ld [CryLength], a
 	ld a, [hl]

main.asm

@@ -99732,12 +99732,12 @@ Functionfb841: ; fb841
 	ld a, [hli]
 	ld h, [hl]
 	ld l, a
-	ld bc, $fec0
+	ld bc, -$140
 	add hl, bc
 	ld a, l
 	ld [CryPitch], a
 	ld a, h
-	ld [CryEcho], a
+	ld [CryPitch + 1], a
 	ld hl, CryLength
 	ld a, [hli]
 	ld h, [hl]
@@ -99747,7 +99747,7 @@ Functionfb841: ; fb841
 	ld a, l
 	ld [CryLength], a
 	ld a, h
-	ld [$c2b3], a
+	ld [CryLength + 1], a
 	callba PlayCry
 	call WaitSFX
 

wram.asm

@@ -107,8 +107,7 @@ channel_struct: MACRO
                       ds 1 ; c125
                       ds 1 ; c126
                       ds 1 ; c127
-\1CryPitch::          db
-\1CryEcho::           db
+\1CryPitch::          dw
                       ds 4
 \1NoteLength::        db ; frames per 16th note
                       ds 1 ; c12f
@@ -227,9 +226,7 @@ MusicFadeIDHi:: ; c2aa
 	ds 1
 	ds 5
 CryPitch:: ; c2b0
-	ds 1
-CryEcho:: ; c2b1
-	ds 1
+	ds 2
 CryLength:: ; c2b2
 	ds 2
 LastVolume:: ; c2b4