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DISPLAY TEST/ONLINE
BENCHMARK DE LATENCE DES PÉRIPHÉRIQUES — MOTEUR DE TEMPORISATION

Outil de Latence Audio Sans Fil et Périphériques

Calculez la latence audiovisuelle globale à travers les codecs Bluetooth (SBC, AAC, aptX LL, LDAC, LC3), les dongles 2.4GHz RF, les tampons de l'OS et les fréquences d'écran (60Hz–540Hz).

高精度測定

詳細メトリクス

ESPORTS GRADE (≤30ms)

⚙️ HARDWARE & PROTOCOL CONFIGURATION

Active Noise Cancellation (ANC DSP)

Triggers a sub-millisecond Web Audio sine wave pulse synced with the visual flash box.

📊 SYSTEMIC LATENCY TELEMETRYEXCELLENT

Total Systemic Delay
31.27 ms
End-to-end pipeline
Lip-Sync Offset
5 Frames
@ 144Hz Refresh
ジッター (ms):
±1.50 ms
Variance spread
Multi-Layer Pipeline Breakdown (ms)
Wireless Protocol / Codec Transmission:12.00 ms
OS Audio Subsystem Queue:3.00 ms
Hardware Audio Buffer Queue:5.33 ms
DAC / Hardware ANC DSP Processing:3.00 ms
Display Frame Refresh Period:6.94 ms
⚠️ Primary System Bottleneck:Wireless Protocol / Codec Transmission
Optimization Recommendations:
  • Switch to a 2.4GHz RF USB dongle to eliminate Bluetooth codec latency.
VISUAL SYNC FLASH INDICATOR
Browser & OS Color Management Limitations

Software-based visual evaluation patterns are subject to Web browser color space mapping (sRGB / Display P3), operating system display scaling, ICC profile overrides, and GPU driver settings. While Display Test Online utilizes hardware-accelerated WebGL 2.0 rendering pipelines, browser-based tests cannot fully replace physical hardware colorimeters or spectrophotometers (e.g., Calbrite Display Plus HL, X-Rite i1Display Pro) for color-critical prepress workflows.

OPTOMETRIC ERGONOMICS & NON-MEDICAL NOTICE

Display Test Online is an engineering calibration utility for electronic visual displays (LCD, OLED, QD-OLED, MicroLED) and mobile touch digitizers. This software is NOT a medical eye exam, optometric vision test, or diagnostic health utility.

To reduce Digital Eye Strain (DES) during display calibration, apply optometric ergonomics:

  • The 20-20-20 Rule: Every 20 minutes, look at an object at least 20 feet away for 20 seconds.
  • Ambient Illumination: Ensure room ambient lighting matches display brightness levels (~100–150 nits for standard SDR workloads).
  • Optimal Viewing Distance: Place your screen approximately 20 to 30 inches (50–75 cm) from your eyes.
診断プロトコル

ディスプレイテストの実施手順 (01, 02, 03)

01

準備

画面の汚れを拭き取り、環境光自動調整をオフにして、ネイティブ解像度と最大リフレッシュレートに設定します。

02

実行

全画面モード (F11) に切り替え、コントロールバーを使って各種テストパターンを順に表示します。

03

評価

部屋を暗くし、異なる視野角からムラやドット抜け、残像を観察してガイドと照合します。

ハードウェアアーキテクチャ

液晶・有機ELパネル技術の比較

プロフェッショナルIPS (In-Plane Switching)

卓越した色再現性と視野角。リファレンスモニターに最適。暗所でのわずかなIPSグローが発生する場合があります。

ゲーミングIPS (Fast IPS / Nano IPS)

ゲーミング向けの高速リフレッシュレートと応答速度。ただしVAと比較して静的コントラスト比は控えめです。

VAパネル (Vertical Alignment)

引き締まった深みのある黒と高コントラスト (3000:1+)。湾曲モニターに多い一方、暗所での黒残像に注意が必要です。

OLED (有機EL) ＆ QD-OLED

自発光ピクセルによる完全な漆黒、超高速応答、無限のコントラスト。自動輝度制限 (ABL) の影響を受けます。

Technical FAQs & Helpful Content

FAQ sur la Latence Audio Sans Fil

この診断機器、校正手順、ディスプレイ技術規格について知っておくべきすべての情報。

01.Why do Bluetooth headphones have audio delay in games?
Standard Bluetooth audio codecs (SBC and AAC) buffer audio packets to prevent dropouts, creating 120ms to 200ms of audio delay. 2.4GHz proprietary RF USB dongles and aptX Low Latency codecs reduce audio delay to 12ms-35ms.
02.How do I test my wireless earbud latency online?
Use our Web Audio hardware pulse generator. Click EMIT HARDWARE AUDIO PULSE and observe the visual flash indicator to gauge lip-sync delay between what you see on screen and what you hear in your headphones.
03.Is 2.4GHz RF better than Bluetooth for gaming?
Yes. 2.4GHz RF dongles utilize uncompressed audio transmission streams with fixed buffer sizes, yielding systemic latency under 20ms—over 6x faster than standard Bluetooth AAC/SBC.
04.What is aptX Low Latency (aptX LL) and LC3 codec?
aptX LL achieves ~32ms latency; LE Audio LC3 codec reduces latency down to 20-30ms while maintaining lower bitrate energy consumption.
05.How does monitor refresh rate affect audio-visual lip-sync delay?
Higher display refresh rates (e.g. 240Hz vs 60Hz) render visual flash frames 12.5ms faster, reducing perceived click-to-audio synchronization deltas.
06.What causes wireless 2.4GHz audio stutter and packet drops?
Wi-Fi routers operating on 2.4GHz channels (1, 6, 11), USB 3.0 port RF interference, or physical obstacles block line-of-sight signal transmission.
07.What is LDAC audio codec latency?
Sony LDAC prioritizes high bitrate audio quality (990 kbps) for Hi-Res audio, but incurs 150ms-200ms latency, making it unsuitable for competitive gaming.
08.Does Windows OS WASAPI audio buffer add latency?
Windows Shared Audio engine buffers add 10ms-25ms system overhead unless Exclusive WASAPI or ASIO low-latency drivers are engaged.
09.Can I use wired 3.5mm headphones for 0ms audio latency?
Analog 3.5mm wired connections eliminate wireless encoding, buffering, and RF packet transmission delays, delivering true 0ms wireless latency.
10.How do I export my wireless audio latency test report?
Click 'Export Passport' to save your verified wireless audio latency telemetry in a JSON report.
次にどのテストを行うべきかお困りですか？トラブルシューティングが必要ですか？
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