Yahoo! News I tried to verify whether YouTube and games, really wireless earphones can be used with delay on iPad

Using the "11-inch iPad Pro (3rd generation)" (2021 model), verify whether wireless earphones can really be used with delay!

I think there are many people who use the iPad for watching videos and as a game console. For gamers and those who mainly watch videos, the audio delay that the timing of the video and sound is off is a point that bothers me. It is often said that wired earphones are recommended because audio shifts occur with Bluetooth wireless earphones, but when looking at the latest iPad series, iPad Pro, iPad Air, and iPad mini do not have a 3.5 mm earphone jack except for the unbranded iPad. Hmm. [See all photos] So, I tried various patterns using my "11-inch iPad Pro (3rd generation)" (2021 model).・ Adapter that can convert from USB Type-C to earphone jack… Anker “USB-C & 3.5mm audio adapter” (actual price: 1490 yen) ・ Wired earphone with USB type-C terminal… Audio Technica “ATH-CKD3C” (actual price) Price: 3080 yen) ・ Complete wireless earphones that support "low latency game mode" ... SOUNDPEATS "Air3" (actual price: 4570 yen) Also, try the iPad's built-in speaker "AirPods Pro" for comparison.

Verify if wireless earphones can really be used with delay

Verifying AirPods Pro delays

Audio delays, such as audio latency, are a deep-seated problem. I suspect that it is caused by the delay of wireless or audio output, and there is a part that comes from the buffer of the system or application, and there is audio delay even with the built-in speaker of iPad. So, I actually measured the difference between the video and audio with the YouTube video and game. Since the delay number uses milliseconds (ms), for example, 100ms means that the delay is 0.1 seconds. First, I tested a comparison of delays with videos using YouTube. Several videos for delay testing have been released, but this time it was verified with "Razer Hammerhead True Wireless Earbuds | Audio Latency Test" (https://youtu.be/ZPaJ3SrUhLU) by RAZER, which is famous for gaming devices. It is a mechanism that can test the voice delay by pausing at the moment when the sound comes out. The pictures are for reference only because the YouTube player doesn't pause the sound exactly, but if you repeat the same test dozens of times, you can see the difference between devices. ▼ iPad built-in speaker delay ... Approximately 31ms (0.031 seconds) -AirPods Pro delay ... Approximately 81ms (0.081 seconds) -USB earphone jack conversion delay using Anker's adapter ... Approximately 31ms (0.031 seconds) -Audio Technica USB Earphone delay ... Approx. 31ms (0.031 seconds) -SOUNDPEATS "Air3" non-game mode ... Approx. 69ms (0.069 seconds) -SOUNDPEATS "Air3" game mode ... Approx. 31ms (0.031 seconds) iPad built-in speaker, USB earphone jack conversion, Type-C earphones and wireless game modes are lined up side by side in about 31ms (0.031 seconds). It is the limit of this measurement method that the numbers are exactly aligned here. The wireless non-gaming mode had the longest delay at about 69ms (0.069 seconds), and by the way, the AirPods Pro had the longest delay at about 81ms (0.081 seconds). Based on the result of this YouTube delay test, how much you are worried about the delay in a general video. Even if you watch a Japanese news program on YouTube at about 81ms (0.081 seconds) of AirPods Pro, which has the largest delay, you can hardly see the deviation with respect to the movement of the mouth. For watching videos, you don't have to worry about it unless you have earphones with a very large delay.

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