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SPÉCIFICATIONS AUDIO NUMÉRIQUE AES17

低音炮重低频下潜测试 (10Hz - 200Hz)

Testez la réponse des basses, la coupure basse (20Hz–200Hz) et les vibrations du caisson grâce à des balayages sinusoïdaux logarithmiques.

WEB AUDIO SYNTHESIZER & SPECTRUM SCOPE
待机就绪
FREQ: 440 Hz|VOL: 80%
W3C WEB AUDIO API 48kHz
FREQUENCY SELECTOR440 Hz
OUTPUT GAIN / VOLUME80%
诊断协议与流程

如何进行屏幕测试 (01, 02, 03)

01

准备工作

清洁显示器表面灰尘，关闭环境光自动感应，并将屏幕设置为原生分辨率与最高刷新率。

02

开始执行

进入全屏模式 (F11)，利用诊断控制栏依次切换并观察各种专业测试图案。

03

结果评估

在暗室环境下从不同视角细致观察屏幕均匀度、坏点与拖影，参考工程指南判断面板品质。

硬件架构解析

面板显示技术深度解析

专业级 IPS 面板 (In-Plane Switching)

极致色彩精准度与广视角，广泛用于专业调色显示器。暗室环境下存在轻微 IPS Glow 漏光现象。

消费/电竞 IPS (Fast IPS / Nano IPS)

专为电竞优化的超高刷新率与极速灰阶响应，但静态对比度较 VA 面板略低。

VA 面板 (Vertical Alignment)

原生 3000:1+ 超高静态对比度与纯正暗部表现，常用于曲面屏，高速运动下偶有暗部拖影。

OLED (有机发光二极管) 与 QD-OLED

像素级独立自发光，实现真正的纯黑、零拖影近乎即时响应及无穷大对比度，受自动亮度限制 (ABL) 调控。

RÉPONSE EN FRÉQUENCE ACOUSTIQUE

Coupure du Caisson, Accord d'Évent et Acoustique des Infrasons

La reproduction des basses fréquences demande une grande excursion mécanique et une forte puissance. Nos balayages logarithmiques passent de 100Hz à 10Hz inaudibles pour tester les coupures et résonances.

Plage Sub-Basses20 Hz – 60 Hz

Vibrations tactiles produites par les caissons actifs et casques magnétiques planaires.

Coupure THX 80 HzRelais Satellites

Seuil standard où les enceintes satellites transfèrent les basses fréquences au caisson.

Modes de PièceRéflexion des Murs

Identifie les ondes stationnaires et creux acoustiques générés par les murs parallèles.

Technical FAQs & Helpful Content

FAQ Caisson de Basses & Fréquences Graves

关于此项诊断工具、校准步骤及显示器技术标准所需了解的一切。

01.How do I test my subwoofer low-frequency cutoff (extension limit)?
Our bass sweep transitions from 100Hz down to sub-audible 10Hz. Listen for the point where volume drops dramatically or disappears completely to find your subwoofer's low-end limit.
02.What is the frequency range of human sub-bass perception?
Human hearing perceives deep bass starting at ~20Hz up to 60Hz as tactile physical vibrations. Frequencies below 20Hz (infrasound) are felt as room air pressure shifts.
03.What causes speaker cabinet rattling or buzzing during heavy bass sweeps?
Bass rattles are caused by loose cabinet enclosures, unsealed port tubes, vibrating desk surfaces, or driver voice coils exceeding linear excursion limits (Xmax).
04.How do room acoustic modes and standing waves distort bass sound?
Parallel walls reflect low-frequency soundwaves, creating standing wave nodes (bass buildup) and anti-nodes (bass dead zones) at specific seating positions.
05.What is the recommended subwoofer crossover frequency for studio monitors?
The THX standard crossover frequency is 80Hz. Frequencies below 80Hz are routed to the dedicated active subwoofer, freeing main speakers from heavy cone excursion.
06.Can laptop or mobile phone speakers play 20Hz sub-bass tones?
No. Micro-speakers in laptops and smartphones physically cannot move enough air volume to reproduce frequencies below 150Hz–200Hz.
07.What is subwoofer phase alignment (0° vs 180°)?
Phase alignment ensures your subwoofer cone pushes forward simultaneously with main speaker woofers. Out-of-phase subwoofers cancel out bass at the crossover point.
08.Why does uncompressed Web Audio sine sweep produce cleaner bass than YouTube videos?
YouTube applies lossy AAC/OPUS compression that truncates sub-20Hz low end and adds phase distortion. Web Audio API generates uncompressed pure 64-bit mathematical sine waves directly in RAM.
09.How do I locate the optimal subwoofer position in my room ('sub crawl')?
Place the subwoofer at your main listening position, play a 40Hz bass sweep, and crawl along the floor near room boundaries to find where the bass sounds cleanest and punchiest.
10.Is playing 10Hz to 20Hz sub-bass sweeps safe for high-end subwoofers?
Yes, provided volume is set at moderate listening levels. Avoid excessive amplification on ported subwoofers below their tuning frequency to prevent driver unloading.
不确定接下来该运行哪项测试？需要故障排除建议？
阅读完整诊断指南 →
PASS

EXTENSION DES BASSES OK

Transducteur Basse Fréquence

20.0/Hz
Limite Sub-Basses20 Hz (Propre)
Relais Fréquence80 Hz THX

Métriques du Caisson

Télémétrie Basse Fréquence

Balayage 10-100Hz
Fréquence Grave Actuelle
60Hz
Coupure Inaudible
20Hz
Relais de Coupure THX
80Hz

Contrôles du Balayage

Plage et Signal des Basses

Controls
70 %

Shortcuts

Keyboard Navigation

Hotkeys
B
Déclencher Impulsion 20Hz
Space
Lecture / Pause Balayage
R
Réinitialiser le Balayage
TV users can navigate with D-Pad & Remote arrow keys
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