📖 如何準確測試藍牙耳機延遲？
📖 How to accurately test Bluetooth headset latency?
開始測試後，螢幕上的球體會週期性落地。您的任務是調整滑桿，讓「聽到聲音的瞬間」與「球體觸底視覺」精確同步。滑桿數值即為您的耳機在此裝置上的感知延遲偏移量。
After starting the test, the sphere on the screen will bounce periodically. Your task is to adjust the slider so that the "moment you hear the sound" is perfectly synchronized with the "visual impact of the sphere." The slider value is your perceived latency offset.
測試時請注意：將音量調至 60% 以上；在安靜環境進行；若使用藍牙耳機，請確認已切換至「低延遲模式」（各品牌名稱不同，常見如 Game Mode、LE Audio）。
Note during testing: Set volume above 60%; test in a quiet environment; if using a Bluetooth headset, ensure it is switched to "Low Latency Mode" (names vary, e.g., Game Mode, LE Audio).
📏 各連接方式的延遲參考範圍
📏 Latency Reference Ranges by Connection Type
- 有線（3.5mm / USB）Wired (3.5mm/USB)：< 10 ms，感知上近乎即時< 10 ms, perceived as almost instantaneous.
- 2.4GHz 無線接收器2.4GHz Dongle：20–40 ms，電競耳機主流選擇20–40 ms, the mainstream choice for esports headsets.
- 藍牙低延遲模式Bluetooth Low-Latency：40–80 ms，可接受40–80 ms, acceptable.
- 標準藍牙（SBC / AAC）Standard Bluetooth (SBC / AAC)：100–300 ms，玩即時遊戲會明顯感受到落差100–300 ms, noticeable lag in real-time gaming.
⚡ 自動測試的原理是什麼？
⚡ What is the principle of the Auto Test?
系統透過喇叭 / 耳機播放一個 1kHz 的短促嗶聲，同時啟動麥克風監聽。程式計算「聲音發出」到「麥克風收到」之間的往返時間（RTL, Round-Trip Latency），即為耳機的實際輸出延遲。
The system plays a short 1kHz beep through the headset while monitoring via the microphone. The program calculates the Round-Trip Latency (RTL) between "sound emitted" and "sound received," representing the actual output latency of your device.
如何讓測試結果更準確？
How to make the test results more accurate?
- 將耳機麥克風（或外接麥克風）盡量貼近耳罩，縮短空氣傳遞距離Place the mic as close to the ear cup as possible to shorten air transmission distance.
- 系統音量調至 70% 以上，確保麥克風能清楚收到嗶聲Set system volume above 70% so the mic clearly captures the beep.
- 在安靜環境進行，避免環境噪音誤觸發偵測Perform in a quiet room to prevent background noise from triggering false detections.
- 若出現「Stereo Mix」，請改選實體麥克風，否則會量到極低的系統內部迴路延遲If "Stereo Mix" appears, select your physical mic instead. Otherwise, it measures the system's internal loopback latency.
測試失敗或數值異常怎麼辦？
What if the test fails or shows abnormal values?
若結果顯示 < 5 ms，通常代表偵測到了系統內部迴路而非耳機，請檢查輸入裝置選擇。若結果 > 400 ms，代表環境噪音干擾了偵測，請移至安靜處重試。
If the result is < 5 ms, the internal loopback was detected; check your input device. If the result is > 400 ms, environmental noise likely interfered; retry in a quiet place.
🔊 左右聲道測試怎麼聽？
🔊 How to listen to the L/R Channel Test?
點擊「左聲道」按鈕，聲音應清楚出現在左耳；點擊「右聲道」應出現在右耳。若兩者相反，代表耳機左右插反或線材接錯。若其中一側完全無聲，代表驅動程式或硬體有問題。
Click "Left Ch" and the sound should appear in your left ear; click "Right Ch" for the right. If reversed, your headset is worn backward or wired incorrectly. If one side is dead silent, there's a hardware/driver issue.
正相與反相的差異？
Difference between In-Phase and Out-Phase?
「正相」播放時，兩耳聲音同步，結像應集中在頭部正中央。「反相」播放時，聲音會感覺「往外擴散」或「中空」。若您的耳機在正相時就有空洞感，代表左右聲道存在相位問題（常見於接線不良）。
In "In-Phase," both ears play synchronously, centering the audio image perfectly inside your head. In "Out-Phase," the sound feels "hollow" or "diffused." If your headset sounds hollow during In-Phase, it indicates a phase issue (common in poor wiring).
頻率掃描能告訴我什麼？
What does the Frequency Sweep tell me?
掃描從 20Hz 到 20kHz。留意您「聽不到聲音」的頻率段：多數成年人在 16kHz 以上即開始衰減。此外，若在某個中頻段聽到明顯共鳴或破音，代表耳機在該頻率有諧振問題。
The sweep runs from 20Hz to 20kHz. Note the frequency where you stop hearing sound; most adults start dropping off above 16kHz. If you hear obvious rattling or distortion in the midrange, your headset has resonance issues at that frequency.
🔥 煲機真的有效嗎？
🔥 Does Burn-in actually work?
煲機（Burn-in）是透過持續播音讓耳機振膜的懸邊材料逐漸軟化，使音質趨於穩定。對高分子材質懸邊的動圈耳機效果較明顯；對靜電或動鐵驅動器則幾乎無影響。
Burn-in is the process of playing continuous audio to soften the diaphragm's surround material, stabilizing the sound quality. This is most noticeable in dynamic drivers; it has almost no effect on electrostatic or balanced armature drivers.
為什麼要用粉紅噪音而不是音樂？
Why use Pink Noise instead of music?
粉紅噪音的能量在各頻段均勻分布，能對振膜進行全頻段的均勻鍛煉。白噪音則讓高頻段獲得更多能量。智能循環模式交替使用兩者，並加入全頻掃描與休息期，是最全面的煲機方案。
Pink Noise has equal energy across all octaves, providing a uniform workout across the entire frequency spectrum. White noise pushes more energy into high frequencies. Our Smart Cycle alternates between both and adds rest periods, making it the most comprehensive solution.
煲機需要多久？建議音量多大？
How long does it take? What volume is recommended?
建議 50–200 小時，以中等音量（不超過日常聆聽音量的 80%）進行。過大音量可能造成振膜永久性損傷。智能循環模式的 60 分鐘可視為「入門快速版」。
Generally 50–200 hours at a moderate volume (no more than 80% of normal volume). Excessive volume can cause permanent damage. The 60-minute Smart Cycle is a "quick break-in."
🎤 頻譜分析器能用來做什麼？
🎤 What can the Spectrum Analyzer be used for?
即時頻譜分析將麥克風收到的聲音視覺化。實用場景包括：搭配頻率掃描尋找耳機的弱頻段、找出房間內的噪音頻率（如電腦風扇多在 200–500 Hz），或錄音前檢查是否有電流雜訊。
It visualizes the sound captured by your mic. Use cases include: finding weak frequency bands of a speaker, identifying environmental noise frequencies (e.g., PC fans at 200–500 Hz), or checking for electrical hum before recording.
📈 頻率響應量測怎麼用？
How to use the FR measurement?
選擇「左聲道」或「右聲道」後開始，系統播放 15 秒掃頻並畫出響應曲線；「L-R 對比」會連續量測兩邊並顯示最大差異 (dB)。請保持麥克風位置與音量不變再切換對象比較。曲線在中頻 (200Hz–2kHz) 的起伏最能反映單體特性。
Pick Left or Right and start: a 15-second sweep is played and the response curve is plotted. "L-R Compare" measures both sides back-to-back and shows the max difference (dB). Keep mic position and volume unchanged between comparisons. Midrange (200Hz–2kHz) bumps best reveal driver character.
db 數值代表什麼？
What do the db values mean?
畫面上方的 Min / Avg / Max 是麥克風收到的相對音量估算（以 0–100 刻度呈現，非絕對 dBSPL）。環境安靜時應接近 0–10；正常說話約 40–60。所有數據均在本機運算，不會上傳。
The Min/Avg/Max are relative volume estimations of the mic input (on a 0–100 scale, NOT absolute dBSPL). In a quiet room, it should be 0–10; normal talking is 40–60. All data is processed locally and never uploaded.