game-audio

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Game Audio Principles

游戏音频原则

Sound design and music integration for immersive game experiences.

为沉浸式游戏体验打造的音效设计与音乐整合方案。

1. Audio Category System

1. 音频分类系统

Category Definitions

分类定义

CategoryBehaviorExamples
MusicLooping, crossfade, duckingBGM, combat music
SFXOne-shot, 3D positionedFootsteps, impacts
AmbientLooping, background layerWind, crowd, forest
UIImmediate, non-3DButton clicks, notifications
VoicePriority, ducking triggerDialogue, announcer
分类行为特性示例
Music(音乐)循环播放、交叉淡入淡出、音量压低BGM、战斗音乐
SFX(音效)单次触发、3D定位脚步声、撞击声
Ambient(环境音)循环播放、背景层风声、人群声、森林环境音
UI(界面音效)即时触发、非3D按钮点击声、通知提示音
Voice(语音)高优先级、触发音量压低对话、旁白播报

Priority Hierarchy

优先级层级

When sounds compete for channels:

1. Voice (highest - always audible)
2. Player SFX (feedback critical)
3. Enemy SFX (gameplay important)
4. Music (mood, but duckable)
5. Ambient (lowest - can drop)

当多个声音争夺播放通道时:

1. Voice(最高优先级 - 始终可闻)
2. Player SFX(玩家音效,反馈至关重要)
3. Enemy SFX(敌人音效,影响 gameplay)
4. Music(音乐,营造氛围,但可被压低)
5. Ambient(环境音,最低优先级 - 可被中断)

2. Sound Design Decisions

2. 音效设计决策

SFX Creation Approach

音效创建方法

ApproachWhen to UseTrade-offs
RecordingRealistic needsHigh quality, time intensive
SynthesisSci-fi, retro, UIUnique, requires skill
Library samplesFast productionCommon sounds, licensing
LayeringComplex soundsBest results, more work
方法使用场景权衡点
录音录制需要真实感的场景音质高,但耗时久
合成生成科幻、复古风格、UI音效独特性强,需要专业技能
素材库采样快速制作需求音效常见,涉及授权问题
分层叠加复杂音效制作效果最佳,工作量更大

Layering Structure

分层结构

LayerPurposeExample: Gunshot
AttackInitial transientClick, snap
BodyMain characterBoom, blast
TailDecay, roomReverb, echo
SweetenerSpecial sauceShell casing, mechanical

层级作用示例:枪声
Attack(起音)初始瞬态音咔哒声、爆裂声
Body(主体)核心特征音轰鸣声、爆炸声
Tail(尾音)衰减、空间回响混响、回声
Sweetener(修饰音)特色点缀弹壳掉落声、机械声

3. Music Integration

3. 音乐整合

Music State System

音乐状态系统

Game State → Music Response
├── Menu → Calm, loopable theme
├── Exploration → Ambient, atmospheric
├── Combat detected → Transition to tension
├── Combat engaged → Full battle music
├── Victory → Stinger + calm transition
├── Defeat → Somber stinger
└── Boss → Unique, multi-phase track
游戏状态 → 音乐响应
├── 菜单 → 舒缓、可循环的主题音乐
├── 探索 → 氛围化、沉浸式音乐
├── 检测到战斗 → 过渡至紧张风格
├── 进入战斗 → 完整战斗音乐
├── 胜利 → 短促高潮音 + 舒缓过渡
├── 失败 → 低沉短促音
└── Boss战 → 独特的多阶段曲目

Transition Techniques

过渡技巧

TechniqueUse WhenFeel
CrossfadeSmooth mood shiftGradual
StingerImmediate eventDramatic
Stem mixingDynamic intensitySeamless
Beat-syncedRhythmic gameplayMusical
Queue pointNext natural breakClean

技巧使用场景感受
Crossfade(交叉淡入淡出)平滑情绪转换渐进式
Stinger(短促高潮音)即时事件触发戏剧性
Stem mixing(分轨混音)动态强度调整无缝衔接
Beat-synced(节拍同步)节奏型 gameplay音乐化
Queue point(节点触发)自然段落切换干净利落

4. Adaptive Audio Decisions

4. 自适应音频决策

Intensity Parameters

强度参数

ParameterAffectsExample
Threat levelMusic intensityEnemy count
HealthFilter, reverbLow health = muffled
SpeedTempo, energyRacing speed
EnvironmentReverb, EQCave vs outdoor
Time of dayMood, volumeNight = quieter
参数影响对象示例
威胁等级音乐强度敌人数量
生命值滤镜、混响低生命值 = 声音模糊
移动速度tempo、能量感竞速游戏速度
环境场景混响、均衡器洞穴 vs 户外
时间时段氛围、音量夜晚 = 音量降低

Vertical vs Horizontal

垂直分层 vs 水平分段

SystemWhat ChangesBest For
Vertical (layers)Add/remove instrument layersIntensity scaling
Horizontal (segments)Different music sectionsState changes
CombinedBothAAA adaptive scores

系统变化内容适用场景
Vertical(垂直分层)添加/移除乐器层强度缩放
Horizontal(水平分段)切换不同音乐段落状态切换
Combined(混合模式)同时包含上述两种AAA级游戏自适应配乐

5. 3D Audio Decisions

5. 3D音频决策

Spatialization

空间定位

Element3D Positioned?Reason
Player footstepsNo (or subtle)Always audible
Enemy footstepsYesDirectional awareness
GunfireYesCombat awareness
MusicNoMood, non-diegetic
Ambient zoneYes (area)Environmental
UI soundsNoInterface feedback
元素是否3D定位?原因
玩家脚步声否(或轻微定位)始终可闻
敌人脚步声方向感知
枪声战斗态势感知
音乐氛围营造,非叙事性音效
区域环境音是(区域定位)环境沉浸
UI音效界面反馈

Distance Behavior

距离行为

DistanceSound Behavior
NearFull volume, full frequency
MediumVolume falloff, high-freq rolloff
FarLow volume, low-pass filter
MaxSilent or ambient hint

距离声音表现
近处全音量、全频段
中等距离音量衰减、高频滚降
远处低音量、低通滤波
最大距离静音或仅保留环境提示音

6. Platform Considerations

6. 平台适配考量

Format Selection

格式选择

PlatformRecommended FormatReason
PCOGG Vorbis, WAVQuality, no licensing
ConsolePlatform-specificCertification
MobileMP3, AACSize, compatibility
WebWebM/Opus, MP3 fallbackBrowser support
平台推荐格式原因
PCOGG Vorbis、WAV音质佳,无授权限制
主机平台专属格式认证要求
移动端MP3、AAC文件小,兼容性好
网页端WebM/Opus、MP3降级方案浏览器支持

Memory Budget

内存预算

Game TypeAudio BudgetStrategy
Mobile casual10-50 MBCompressed, fewer variants
PC indie100-500 MBQuality focus
AAA1+ GBFull quality, many variants

游戏类型音频内存预算策略
移动端休闲游戏10-50 MB高压缩,减少变体
PC独立游戏100-500 MB侧重音质
AAA级游戏1+ GB全音质,多变体

7. Mix Hierarchy

7. 混音层级

Volume Balance Reference

音量平衡参考

CategoryRelative LevelNotes
Voice0 dB (reference)Always clear
Player SFX-3 to -6 dBProminent but not harsh
Music-6 to -12 dBFoundation, ducks for voice
Enemy SFX-6 to -9 dBImportant but not dominant
Ambient-12 to -18 dBSubtle background
分类相对音量说明
Voice(语音)0 dB(参考基准)始终清晰可闻
Player SFX(玩家音效)-3 至 -6 dB突出但不刺耳
Music(音乐)-6 至 -12 dB氛围基础,语音播放时压低
Enemy SFX(敌人音效)-6 至 -9 dB重要但不主导
Ambient(环境音)-12 至 -18 dB微妙背景音

Ducking Rules

音量压低规则

WhenDuck WhatAmount
Voice playsMusic, Ambient-6 to -9 dB
ExplosionAll except explosionBrief duck
Menu openGameplay audio-3 to -6 dB

触发场景压低对象幅度
语音播放时音乐、环境音-6 至 -9 dB
爆炸发生时除爆炸声外的所有声音短暂压低
菜单打开时游戏内音频-3 至 -6 dB

8. Anti-Patterns

8. 反模式

Don'tDo
Play same sound repeatedlyUse variations (3-5 per sound)
Max volume everythingUse proper mix hierarchy
Ignore silenceSilence creates contrast
One music track loops foreverProvide variety, transitions
Skip audio in prototypePlaceholder audio matters

Remember: 50% of the game experience is audio. A muted game loses half its soul.
错误做法正确做法
重复播放相同音效使用变体(每个音效3-5种变体)
所有音效调至最大音量遵循合理的混音层级
忽略静音的作用静音可营造对比感
单一音乐无限循环提供多样音乐与过渡
原型阶段跳过音频占位音频至关重要

记住: 游戏体验的50%来自音频。静音的游戏会失去一半灵魂。