📚 Year 9 OCR Media: Formula and Theorem Quick-Reference Handbook | Year 9 OCR 媒体：公式定理速查手册
Welcome to your one-stop revision companion for Year 9 OCR Media Studies. This handbook distils the essential theories, structural models, and technical formulas you need to analyse media texts, audiences, and industries. Keep it close for quick recall before assessments.
欢迎使用 Year 9 OCR 媒体研究的终极复习伴侣。本手册浓缩了你分析媒介文本、受众和产业所需的核心理论、结构模型与技术公式，适合在测评前快速回顾。
1. The Media Studies Toolkit: Key Concepts | 媒体研究工具箱：关键概念
OCR media studies are built on four interlocking conceptual pillars: media language, representation, audience, and industry. Every analysis begins by asking how a text is constructed, what ideas it promotes, who it is aimed at, and how it is produced and distributed.
OCR 媒体研究建立在四个相互关联的概念支柱上：媒介语言、表征、受众和产业。任何分析都从提问开始：文本如何被建构、它推广了什么观念、面向谁、以及它是如何生产和分发的。
The mnemonic ‘M.R.A.I.’ helps you remember these lenses. Media language covers camera, editing, sound, and mise‑en‑scène. Representation examines how people, places and issues are portrayed. Audience explores target groups and interpretations. Industry refers to ownership, funding, and regulation.
记忆口诀 ‘M.R.A.I.’ 可以帮你记住这四个视角。媒介语言涵盖摄影、剪辑、声音和场面调度。表征审视人物、地点和事件如何被呈现。受众探讨目标群体和解读方式。产业指所有权、资金和监管。
2. Semiotics – The Formula of the Sign | 符号学 – 符号的公式
Semiotics teaches us that meaning is constructed through signs. The fundamental formula is:
符号学告诉我们，意义是通过符号建构的。基本公式如下：
Sign = Signifier + Signified
The signifier is the physical form (a word, image, sound); the signified is the mental concept it evokes. For example, the letters ‘t‑r‑e‑e’ or a sketch of a tree act as the signifier, while the idea of a tall, leafy plant is the signified.
能指是物理形式（字词、图像、声音）；所指是它唤起的心理概念。例如，字母 ‘t‑r‑e‑e’ 或一棵树的简笔画是能指，而高大、长满叶子的植物这个概念则是所指。
convention, like a red heart → love). Always identify the type when decoding a media text.
符号可以分为像似符号（相似于对象，如照片）、指示符号（有直接联系，如烟→火）或象征符号（受规约支配，如红心→爱）。解码媒介文本时，务必辨认符号类型。
3. Narrative Theory: Todorov's Equilibrium Model | 叙事理论：托多罗夫的均衡模型
Tzvetan Todorov proposed that every story moves through five stages. The narrative formula can be mapped as:
茨维坦·托多罗夫提出每个故事都经历五个阶段。该叙事公式可表示为：
Equilibrium → Disruption → Recognition → Attempt to Repair → New Equilibrium
The initial equilibrium presents a stable, ‘normal’ state. A disruption (a problem or threat) shatters this balance. Characters recognise the disruption, then strive to repair the damage, often through a quest or conflict. Finally, a new equilibrium is achieved — the world is restored but transformed.
初始均衡呈现一种稳定的“常态”。一个破坏（问题或威胁）打破了平衡。角色意识到破坏，然后努力修复损害，通常通过任务或冲突。最后，达成新的均衡——世界恢复但已被改变。
Apply this model to any film or advertisement narrative. For instance, in a charity advert, the disruption might be child poverty, and the repair is the viewer’s donation. The new equilibrium shows a hopeful future.
将这个模式应用于任何电影或广告叙事。例如，在慈善广告中，破坏可能是儿童贫困，修复则是观众的捐款。新的均衡展现一个有希望的未来。
4. Propp's Character Archetypes | 普罗普的角色原型
Vladimir Propp analysed folk tales and identified seven recurring character functions. Think of these as a ‘character formula’ for storytelling:
弗拉基米尔·普罗普分析了民间故事，辨识出七种反复出现的角色功能。可将它们视为讲故事的“角色公式”：
| Archetype (角色原型) | Function (功能) |
|---|---|
| The Hero (英雄) | Seeks something, restores order (寻求目标，恢复秩序) |
| The Villain (反派) | Creates disruption, fights the hero (制造破坏，与英雄对抗) |
| The Donor (捐赠者) | Gives a magical object or advice (提供魔法物品或建议) |
| The Helper (帮手) | Assists the hero on the quest (协助英雄完成任务) |
| The Princess/ Prize (公主/奖品) | The reward, often needs rescuing (奖赏，常需拯救) |
| The Dispatcher (派遣者) | Sends the hero on the mission (派英雄执行使命) |
| The False Hero (假英雄) | Pretends to be good, is unmasked (伪装成好人，被揭穿) |
While originally for fairy tales, these archetypes appear frequently in modern media — from superhero films to video game plots. Spotting them helps you discuss character construction and stock types.
这些原型虽源于童话，但频繁出现在现代媒体中——从超级英雄电影到电子游戏情节。识别它们有助于你讨论角色构建和固定类型。
5. Barthes' Narrative Codes | 巴特的叙事代码
Roland Barthes identified five codes that create meaning and drive narrative interest. They function like a ‘toolkit theorem’ for textual analysis:
罗兰·巴特辨识了五种创造意义并驱动叙事兴趣的代码。它们像一套文本分析的“工具箱定理”：
- Hermeneutic Code (enigma code): Puzzles, mysteries, unanswered questions that keep audiences guessing.
阐释代码（谜语代码）： 谜题、神秘事件、未有答案的问题，让观众不断猜测。 - Proairetic Code (action code): Actions that imply further events (e.g., someone picking up a key suggests they will open a door).
行动代码： 暗示后续事件的动作（例如，某人拿起钥匙暗示他将去开门）。 - Semantic Code: Connotations created by repeated themes or imagery, such as a repeated colour meaning danger.
语义代码： 由反复出现的主题或意象创造的内涵，比如反复出现的颜色代表危险。 - Symbolic Code: Deeper structural oppositions (good vs evil, nature vs technology) formed by binaries.
象征代码： 通过二元对立形成的深层结构对立（善与恶、自然与科技）。 - Cultural Code: References to shared knowledge outside the text — history, science, religion.
文化代码： 引用文本之外共享的知识——历史、科学、宗教。
When analysing a film poster or magazine cover, ask: what enigmas are posed? What actions are promised? What cultural myths are referenced?
分析电影海报或杂志封面时，问自己：设置了哪些谜题？承诺了哪些行动？引用了哪些文化神话？
6. Audience Theory: Uses and Gratifications | 受众理论：使用与满足
The Uses and Gratifications model moves away from asking ‘what media do to people’ and instead asks ‘what people do with media’. The ‘gratifications formula’ can be summarised as:
使用与满足模型不再问“媒体对人们做了什么”，转而问“人们用媒体做什么”。这个“满足公式”可以概括为：
Use = Information + Personal Identity + Integration and Social Interaction + Entertainment
In this framework, audience members actively select media to meet their needs. They seek information for surveillance of the world, reinforcement of personal identity through role models, social interaction by building relationships with media figures or as conversation topics, and entertainment for escape and relaxation.
在此框架中，受众成员主动选择媒体以满足需求。他们寻求信息以监视世界，通过榜样强化个人身份，通过与媒介人物建立关系或作为话题获得社交互动，以及通过消遣和放松获得娱乐。
Apply this to social media: a teenager might scroll for entertainment, use a celebrity’s post to affirm their own style (personal identity), share meme links to bond with friends (social interaction), and check news headlines for information.
将此用于社交媒体：一个青少年可能刷屏为了娱乐，用名人的帖子确认自己的风格（个人身份），分享表情包链接以与朋友联系（社交互动），以及查看新闻标题获取信息。
7. Encoding/Decoding Model (Stuart Hall) | 编码/解码模型（斯图亚特·霍尔）
Stuart Hall’s model explains how messages are constructed and interpreted. The theorem states that producers encode meaning using media language, but audiences decode it from their own social contexts. There are three reading positions:
斯图亚特·霍尔的模型解释信息如何被构建和解读。该定理指出，生产者使用媒介语言编码意义，而受众则依据自身社会语境解码。存在三种解读立场：
- Dominant/Hegemonic Reading: The audience fully accepts the intended message.
主导/霸权式解读： 受众完全接受预期的意思。 - Negotiated Reading: The audience partly accepts and partly modifies the message based on lived experience.
协商式解读： 受众部分接受、部分根据自己的生活经验修改信息。 - Oppositional Reading: The audience rejects the intended meaning and creates an alternative interpretation.
对抗式解读： 受众拒绝预期意义，创造替代性诠释。
Consider a luxury car advert encoded to mean success. A dominant decoder would agree, a negotiated decoder might admire the car but criticise its environmental impact, and an oppositional decoder could see it as a symbol of inequality.
想象一个被编码为“成功”的豪车广告。霸权式解码者会同意，协商式解码者可能欣赏汽车但批评其环境影响，对抗式解码者则可能视其为不平等的象征。
8. Representation and Stereotypes | 表征与刻板印象
Representation is not a simple mirror of reality; it is a construction. Media selects, omits, and repeats certain images to create ‘theorems’ about social groups. The equation of stereotyping often involves:
表征不是现实的简单镜子；它是一种建构。媒体通过选择、省略和重复某些图像来创造关于社会群体的“定理”。刻板印象的形成常涉及：
Stereotype = Selection + Exaggeration + Repetition
Select a trait (e.g., teenagers wearing hoodies), exaggerate it (make all teenagers look threatening), and repeat across multiple texts until it feels ‘natural’. This process can reinforce dominant ideologies and marginalise some groups.
选择一个特征（例如，青少年穿连帽衫），加以夸张（让所有青少年看起来具威胁性），并跨越多个文本重复，直到它感觉“自然”。这个过程会强化主流意识形态，使某些群体边缘化。
Key theorists like Laura Mulvey (male gaze) and Paul Gilroy (post‑colonial theory) show that representation formulas often reflect power relations. Always ask: who is represented, how, and who benefits from this portrayal?
劳拉·穆尔维（男性凝视）和保罗·吉尔罗伊（后殖民理论）等关键理论家表明，表征公式常常反映权力关系。始终要问：谁被表征，以何种方式，谁从这种描绘中获益？
9. Media Industry Structures: Integration and Public Service | 媒体产业结构：整合与公共服务广播
Industry structure theories explain how companies maximise profit and influence. The integration formulas are:
产业结构理论解释公司如何最大化利润和影响力。整合公式如下：
- Vertical Integration: a company controls production, distribution, and exhibition (e.g., a studio owning the film, the cinema chain, and the streaming platform).
垂直整合： 一家公司控制制作、发行和放映（例如，一个制片厂拥有电影、影院连锁和流媒体平台）。 - Horizontal Integration: a company acquires or merges with others at the same level to increase market share (e.g., a magazine publisher buying a rival title).
水平整合： 一家公司收购或合并同层级其他公司以增加市场份额（例如，杂志出版商收购竞争刊物）。
Another crucial theorem is the public service broadcasting (PSB) remit. Unlike commercial media driven by ratings, PSBs like the BBC must inform, educate, and entertain, and ensure minority interests are served. The funding formula — licence fee vs advertising — shapes content dramatically.
另一个重要定理是公共服务广播（PSB）的职责。不同于由收视率驱动的商业媒体，像 BBC 这样的公共服务广播必须提供信息、教育和娱乐，并确保少数群体利益得到服务。资金公式——牌照费对广告——极大地塑造了内容。
10. Technical Formulas: The Exposure Triangle | 技术公式：曝光三角
In media production (photography, video), correct exposure is determined by three variables. The exposure triangle can be expressed as a balancing formula:
在媒体制作（摄影、视频）中，正确曝光由三个变量决定。曝光三角可以表达为一个平衡公式：
Exposure = Aperture × Shutter Speed × ISO Sensitivity
Aperture (f‑stop) controls the lens opening and depth of field: low f‑numbers (f/2.8) give wide aperture, shallow focus. Shutter speed controls motion blur: fast speeds (1/500s) freeze action; slow speeds (1/30s) create blur. ISO adjusts sensor sensitivity: low ISO (100) gives clean images; high ISO (3200) introduces noise.
光圈（f值）控制镜头开口和景深：低 f 值（f/2.8）带来大光圈、浅景深。快门速度控制运动模糊：高速（1/500s）冻结动作；低速（1/30s）产生模糊。ISO 调节传感器灵敏度：低 ISO（100）图像干净；高 ISO（3200）引入噪点。
Doubling one setting requires halving another to maintain the same exposure — this is the ‘reciprocity theorem’ in practical media production. Use it to justify creative choices in your coursework.
将一项设置加倍就需要将另一项减半来维持相同曝光——这是实际媒体制作中的“互易定理”。用它在课程作业中为创造性选择提供理由。
11. Depth of Field and Shot Composition | 景深与镜头构图
Depth of field (DoF) influences how a viewer’s attention is directed. The simplified DoF ‘theorem’ is:
景深（DoF）影响观众注意力的导向。简化的景深“定理”是：
Shallow DoF = Low f‑number + Long Focal Length + Close Subject
A shallow depth of field blurs the background, isolating the subject — often used to convey intimacy or emphasise a product in advertising. A deep depth of field (high f‑number like f/16, wide‑angle lens) keeps everything in focus, common in landscapes and establishing shots.
浅景深模糊背景，隔离主体——常用于传达亲密感或在广告中强调产品。深景深（高 f 值如 f/16，广角镜头）让一切清晰，常见于风景和定场镜头。
grid. Placing key elements along these lines or intersections creates balance and dynamic tension. Never place the subject dead centre unless aiming for symmetry or authority.
构图公式如三分法则将画面划分为 3×3 网格。将关键元素沿这些线条或交点放置能创造平衡和动态张力。除非追求对称或权威感，否则切勿将主体放在正中央。
12. Editing Formulas: The 180-Degree Rule and Shot/Reverse Shot | 剪辑公式：180度法则与正反打镜头
Continuity editing relies on invisible rules that maintain spatial coherence. The 180‑degree rule states that the camera must stay on one side of an imaginary line connecting two subjects. The formula is:
连续性剪辑依赖维持空间连贯的无形规则。180度法则规定摄影机必须保持在连接两个主体的想象线同一侧。公式为：
Camera positions: all remain within the same 180° semicircle
Crossing the line (or ‘axis of action’) disorients the viewer because characters appear to swap screen positions. This theorem is vital for dialogue scenes, chases, and sports coverage.
越轴（即跨越“动作轴线”）会让观众迷惑，因为角色看起来会调换屏幕位置。这个定理在对话场景、追逐戏和体育转播中至关重要。
Shot/reverse shot is the standard editing pattern for conversations: show Character A, then a reverse angle of Character B, then return to A. This pattern maintains eyeline match and spatial continuity. Together with the 180‑degree rule, it creates a transparent visual grammar that feels natural.
正反打镜头是对话的标准剪辑模式：展示角色 A，然后是角色 B 的反打镜头，再回到 A。该模式保持了视线匹配和空间连续性。与180度法则一起，它创造了一种感觉自然的透明视觉语法。
Published by TutorHao | Media Revision Series | aleveler.com
更多咨询请联系16621398022（同微信）
或截图后用「扫一扫 → 相册」选择本图