Spell noise

Spell noise is the noise generated when casting spells.

How noise is determined

In 0.10, there is a casting noise which is the spell level with factor applied (rounded up). The factor is 1 for conjuration spells, 1/2 for poison and air spells and 3/4 for the others.

A modifier (noise_mod) can be set in spl-data.h to change this base casting noise. It is added to the spell level before applying the school-dependant factor. The noise will be made at the caster's position.

A second source of noise is the spell itself. The noise will be made at the target's position. Some number of spells don't make any noise at all, like Bolt of Draining, and they end up with a noise of 0. If the spell is targeted at a monster, noise is made only when a monster is hit, a spell that misses is silent.

Spell noise

Spell	Caster	Target
Abjuration	3	0
Agony	4	0
Airstrike	2	4
Alistair's Intoxication	2	0
Animate Dead	3	0
Animate Skeleton	1	0
Apportation	1	0 (30 when apporting the Orb of Zot)
Beastly Appendage	1	0
Blade Hands	4	0
Blink	2	0
Bolt of Cold	6	6
Bolt of Draining	3	0
Bolt of Fire	6	6
Bolt of Magma	5	5
Borgnjor's Revivification	5	0
Call Canine Familiar	3	0
Call Imp	2	0
Cause Fear	3	0
Chain Lightning	8	25
Cigotuvi's Degeneration	4	0
Condensation Shield	3	0
Confuse	3	0
Confusing Touch	1	0
Conjure Ball Lightning	7	20 or 25, on each explosion
Conjure Flame	3	2
Control Teleport	3	0
Control Undead	3	0
Controlled Blink	2	0
Corona	1	0
Corpse Rot	2	0
Cure Poison	1	0
Darkness	3	0
Death Channel	5	0
Death's Door	6	0
Deflect Missiles	3	0
Delayed Fireball	7	0 (15 at release time)
Demonic Horde	5	0
Dig	0	0
Dispel Undead	4	0
Dispersal	5	0
Dragon Form	6	0
Enslavement	3	0
Ensorcelled Hibernation	0	0
Evaporate	2	15
Excruciating Wounds	4	15
Fire Brand	2	0
Fire Storm	9	20 or 25 (depends on the radius)
Fireball	5	15
Flame Tongue	1	1
Flight	2	0
Freeze	1	0
Freezing Aura	2	0
Freezing Cloud	6	2
Fulsome Distillation	1	0
Haste	5	0
Haunt	6	0
Ice Form	3	0
Ice Storm	9	20 or 25 (depends on the radius)
Ignite Poison	4	0
Inner Flame	3	0 (15 or 20 when the monster explodes, depends on the size of the monster)
Insulation	2	0
Invisibility	0	0
Iron Shot	6	6
Iskenderun's Mystic Blast	4	4
Leda's Liquefaction	3	0
Lee's Rapid Deconstruction	4	15, 20 or 25 (depends on the radius of the explosion)
Lehudib's Crystal Spear	8	8
Lethal Infusion	2	0
Lightning Bolt	25	5
Magic Dart	1	1
Malign Gateway	6	10
Mass Abjuration	5	0
Mass Confusion	5	0
Mephitic Cloud	3	15
Metabolic Englaciation	5	0
Necromutation	6	0
Olgreb's Toxic Radiance	2	0
Orb of Destruction	7	7 (40 when two orbs collide)
Ozocubu's Armour	3	0
Ozocubu's Refrigeration	5	0
Pain	1	1
Passage of Golubria	3	0 (8 when the portal closes)
Passwall	0	0
Petrify	3	0
Phase Shift	4	0
Poison Arrow	6	6
Poison Weapon	2	0
Poisonous Cloud	6	2
Polymorph Other	3	0
Portal Projectile	2	see ranged combat noise
Projected Noise	2	30
Recall	3	0
Regeneration	3	0
Repel Missiles	1	0
Ring of Flames	6	0
Sandblast	1	1, 2 or 3 (depends on the material: nothing, stones or large rocks)
See Invisible	3	0
Shadow Creatures	4	0
Shatter	7	30
Shock	1	1
Shroud of Golubria	2	0
Silence	0	0
Simulacrum	6	0
Slow	2	0
Spider Form	3	0
Static Discharge	3	0
Statue Form	5	0
Sticks to Snakes	2	0
Sticky Flame	4	1
Sting	1	1
Stone Arrow	3	3
Stoneskin	2	0
Sublimation of Blood	2	0
Summon Butterflies	1	0
Summon Demon	4	0
Summon Dragon	7	0
Summon Elemental	3	0
Summon Greater Demon	6	0
Summon Horrible Things	6	0
Summon Hydra	6	0
Summon Ice Beast	3	0
Summon Scorpions	2	0
Summon Small Mammals	1	0
Summon Ugly Thing	5	0
Sure Blade	2	0
Swiftness	1	0
Teleport Other	3	0
Throw Flame	2	2
Throw Frost	2	2
Throw Icicle	4	4
Tornado	7	~15 (depends on radius and delay of your last action)
Tukima's Dance	3	0
Twisted Resurrection	4	0
Vampiric Draining	3	0
Venom Bolt	5	5
Warp Weapon	4	0

Scale

This is from shout.cc for reference:

• Silent: 0
• Almost silent: 1
• Quiet: 2
• A bit loud: 4
• Loud: 8
• Very loud: 15
• Extremely loud: 20
• Deafening: 30