Year 7 SQA Media: Formula & Theorem Quick Reference Handbook | 媒体学公式定理速查手册

📚 Year 7 SQA Media: Formula & Theorem Quick Reference Handbook | 媒体学公式定理速查手册

Welcome to your essential quick-reference handbook for Year 7 SQA Media Studies. Just like maths or science, media has its own ‘formulas’ and ‘theorems’ that help us understand how meanings are created, stories are told, and audiences are engaged. This guide breaks down ten fundamental media equations into simple, memorable rules. Each entry gives you the core formula, explains what it means, and shows you how to apply it when analysing any media text—from films and TV shows to magazines and social media posts.

欢迎使用这份 Year 7 SQA 媒体学习的必备速查手册。就像数学或科学一样，媒体也拥有自己的“公式”和“定理”，它们帮助我们理解意义是如何创造的、故事是如何讲述的以及受众是如何被吸引的。本指南将十个基础的媒体等式分解成简单易记的规则。每个条目都会给出核心公式，解释其含义，并展示如何将其应用于分析任何媒体文本——从电影、电视节目到杂志和社交媒体帖子。

1. The Media Language Equation: Signifier + Signified = Sign | 媒体语言公式：能指 + 所指 = 符号

Every piece of media is built from signs. In semiotics, a sign is the combination of a signifier (the physical form you see or hear, like a word, image, or sound) and a signified (the mental concept it triggers). For instance, the image of a red rose (signifier) combines with the concept of romance or love (signified) to create the sign ‘romance’. This equation tells us that media makers deliberately choose signifiers to create specific meanings.

每一件媒体产品都是由符号构成的。在符号学中，一个符号是能指（你看到或听到的物理形式，如词语、图像或声音）与所指（它触发的心理概念）的结合。例如，红玫瑰的图像（能指）与浪漫或爱情的概念（所指）结合，创造出“浪漫”这个符号。这个等式告诉我们，媒体制作者刻意选择能指来创造特定的意义。

Sign = Signifier + Signified

2. Camera Shot Formula: Shot Size + Angle + Movement = Visual Meaning | 镜头构图公式：景别 + 角度 + 运动 = 视觉意义

A director builds a shot using three key elements. Shot size determines how much of the subject we see: a close-up highlights emotion, while an extreme long shot shows environment. Camera angle influences power relationships—a low angle makes a character look dominant, whereas a high angle can make them seem vulnerable. Camera movement (pan, tilt, tracking) adds dynamism and guides viewer attention. The sum of these choices creates the visual message of the shot.

导演通过三个关键元素来构建一个镜头。景别决定了我们看到主体的多少：特写强调情感，而大远景展现环境。摄影角度影响权力关系——低角度让角色显得强势，而高角度则让角色显得脆弱。摄影机运动（摇摄、俯仰、推轨）增加动感并引导观众注意力。这些选择的总和创造了镜头的视觉信息。

Visual Meaning = Shot Size + Angle + Movement

3. Story Formula: Character + Conflict + Resolution = Narrative | 故事公式：人物 + 冲突 + 解决 = 叙事

At its simplest, every story needs a character we follow, a problem or conflict they face, and a resolution that shows how they deal with it. This formula applies whether you are analysing a three-minute music video or a feature-length film. A character without conflict is just a description; conflict without resolution leaves an audience unsatisfied. Equally important is that the resolution often reveals something about the character’s journey or a change they have undergone.

在最简单的层面上，每个故事都需要一个我们追随的人物、他们面临的问题或冲突，以及展现他们如何应对冲突的解决方法。这个公式适用于分析三分钟的音乐视频还是长片电影。没有冲突的人物只是描述；没有解决的冲突会让观众不满意。同样重要的是，解决通常揭示了角色旅程的某些方面或他们所经历的变化。

Narrative = Character + Conflict + Resolution

4. The Rule of Thirds: Off-Centre Subject = Dynamic Composition | 三分法规则：偏离中心的主体 = 动态构图

The Rule of Thirds is a fundamental theorem of visual composition. Imagine dividing your frame into nine equal parts using two horizontal and two vertical lines. Placing key elements along these lines or at their intersections creates a more balanced, engaging image than centring the subject. This off-centre placement generates tension, direction, and a sense of narrative flow. Most cameras and smartphones offer a grid overlay to help you apply this rule.

三分法是视觉构图的一个基本定理。想象用两条水平线和两条垂直线将画面分成九个相等的部分。将关键元素放在这些线条上或它们的交点上，会比将主体放在中心创造出更平衡、更吸引人的图像。这种偏离中心的位置产生了张力、方向感和叙事流动感。大多数相机和智能手机都提供网格叠加来帮助你应用这一规则。

Dynamic Composition = Off-Centre Subject (Rule of Thirds)

5. Genre Formula: Iconography + Themes + Conventions = Genre | 类型公式：标志性图像系统 + 主题 + 惯例 = 类型

A film or TV programme’s genre is a contract with the audience. It is constructed by repeating specific iconography (visual and aural signs, like cowboy hats in a Western or spaceships in sci-fi), thematic concerns (love, revenge, survival), and narrative/technical conventions (a chase scene in an action film, a dark lighting style in horror). When these three elements combine consistently, the audience can instantly recognise and predict the genre. A hybrid genre simply borrows from multiple columns of this formula.

电影或电视节目的类型是与观众的一份契约。它通过重复特定的标志性图像系统（视觉和听觉符号，如西部片中的牛仔帽或科幻片中的宇宙飞船）、主题关注点（爱情、复仇、生存）以及叙事/技术惯例（动作片中的追逐场景、恐怖片中的暗调布光风格）来构建。当这三个元素稳定地结合时，观众可以立即识别并预测类型。混合类型只是从这个公式的多个栏目中借用而来。

Genre = Iconography + Themes + Conventions

6. Audience Engagement Formula: Target Audience + Pleasure + Relevance = Engagement | 受众参与公式：目标受众 + 愉悦 + 相关性 = 参与度

Media producers do not create content for everyone; they design for a specific target audience, often defined by age, gender, interests, or lifestyle. In SQA Media, you study how texts offer audience pleasures such as emotional connection, escapism, information, or social interaction. Relevance is the link between the content and the audience’s own life and concerns. When a media product successfully combines the right target with those pleasures and a sense of relevance, the result is deep audience engagement.

媒体制作者并非为所有人创作内容；他们为特定的目标受众设计，受众通常按年龄、性别、兴趣或生活方式界定。在 SQA 媒体课程中，你会学习文本如何提供受众愉悦，例如情感联结、逃避现实、信息获取或社交互动。相关性是内容与受众自身生活和关切之间的纽带。当一个媒体产品成功地将合适的受众目标与那些愉悦及相关性结合起来，结果就是深厚的受众参与。

Engagement = Target Audience + Pleasure + Relevance

7. The Exposure Triangle: Aperture × Shutter Speed × ISO = Correct Exposure | 曝光三角定理：光圈 × 快门速度 × 感光度 = 正确曝光

For practical media production in Year 7, understanding the exposure triangle is essential. Aperture (f-stop) controls the amount of light entering the lens and affects depth of field. Shutter speed determines how long the sensor is exposed to light, freezing or blurring motion. ISO measures the sensor’s sensitivity to light; higher values introduce grain or noise. These three factors are inversely related—changing one requires adjusting at least one other to maintain balanced exposure. This triangle is the physics of capturing images.

对于 Year 7 的实用媒体制作，理解曝光三角至关重要。光圈（f 值）控制进入镜头的光量并影响景深。快门速度决定感光元件曝光多长时间，定格或模糊动作。ISO 衡量感光元件对光线的灵敏度；较高的值会引入颗粒或噪点。这三个因素呈反比关系——改变其中一个就需要调整至少另一个以保持均衡曝光。这个三角就是捕捉图像的物理学。

Correct Exposure = Aperture × Shutter Speed × ISO (balanced)

8. The 180-Degree Rule: Camera Stays on One Side = Spatial Continuity | 180 度规则定理：摄影机保持在同侧 = 空间连贯性

Also called the ‘line of action’, this theorem states that when filming a conversation or action sequence, the camera must remain on one side of an imaginary line drawn between the main subjects. Crossing that line without a motivated camera move disorients the audience because the characters’ screen positions suddenly flip. Maintaining the 180-degree rule ensures that the spatial relationship between characters remains clear and consistent, preserving continuity editing.

也称为“动作轴线”，这条定理指出，在拍摄对话或动作序列时，镜头必须保持在主体之间所画的一条假想线的同一侧。如果没有动机镜头运动就跨越那条线，会使观众感到困惑，因为角色的屏幕位置会突然翻转。遵守 180 度规则可以确保角色之间的空间关系保持清晰一致，维持了连续性剪辑。

Spatial Continuity = Camera on One Side of the Action Axis

9. Encoding/Decoding Theorem: Encoded Message + Audience Decoding = Preferred Meaning | 编码/解码定理：编码信息 + 受众解码 = 偏好意义

Stuart Hall’s model shows that media producers encode a preferred meaning into a text using language, images, and sounds. However, the audience does not simply absorb this meaning; they decode it based on their own background, beliefs, and experiences. The result can be a dominant reading (accepting the preferred meaning), a negotiated reading (partly accepting, partly modifying), or an oppositional reading (completely rejecting the intended message). The formula highlights that meaning is a collaboration between producer and audience.

斯图亚特·霍尔的模型表明，媒体制作者使用语言、图像和声音将一种偏好意义编码到文本中。然而，受众并不是简单地吸收这个意义；他们根据自己的背景、信仰和经验来解码。结果可能是主导式解读（接受偏好意义）、协商式解读（部分接受、部分修改）或对抗式解读（完全拒绝原定信息）。这个公式强调，意义是制作者与受众之间的合作。

Received Meaning = Encoded Message + Audience Decoding

10. Sound Design Formula: Diegetic Sound + Non-Diegetic Sound = Atmosphere | 声音设计公式：剧情内声音 + 非剧情内声音 = 氛围

Sound in media is a careful blend. Diegetic sound originates from within the story world: characters’ dialogue, a radio playing in the scene, footsteps, or slamming doors. Non-diegetic sound exists only for the audience and not for the characters: the film score, a narrator’s voiceover, or dramatic sound effects added later. When a sound designer layers these two categories purposefully, they create a total atmosphere that manipulates our emotions, builds tension, and supports the narrative.

媒体中的声音是一种精心调配的混合物。剧情内声音源自故事世界内部：角色的对话、场景中播放的收音机、脚步声或关门声。非剧情内声音仅为听众存在，角色听不到：电影配乐、旁白画外音或后期添加的戏剧性音效。当声音设计师有目的地将这两类声音分层叠加时，他们便创造出一种整体氛围，操纵我们的情绪，营造张力并支持叙事。

Atmosphere = Diegetic Sound + Non-Diegetic Sound

---

Published by TutorHao | Media Studies Revision Series | aleveler.com

更多咨询请联系16621398022（同微信）