latency

Do I need a digital to analog converter to use a sound bar with an HDTV?

Episode 1403

Harvey from Pahrump, NV
J-Tech Digital Digital to Analog Audio Converter

Harvey wants to get a sound bar for his TV so that dialog will be easier to hear, but his TV doesn't have any analog output. Leo says that since HDTVs are all digital now, there's not much of a reason for manufacturers to put a digital to analog converter inside. The good news is that most sound bars have digital inputs. Harvey already got a J-Tech Digital to Analog Converter.

How can I do multitrack recording with Android?

Episode 1359

Jill from Northridge, CA
Acapella

Jill wants to find an app where she can record herself playing a few different instruments and then play them all together. Leo says there aren't many apps for audio recording and play back on Android because of a massive latency bug. Leo believes it's in the kernel, and they haven't fixed it yet. She can find out more about it at superpowered.com.

How can I watch TV with my bluetooth headset?

Mike from Chula Vista, CA

Episode 1253

Mike just bought a Sony Bluetooth over the ear headphone set. Can he use it with his television? Leo says he can get a Bluetooth transmitter, and if his TV has a headphone jack, he can just plug it in and then pair that to his headphones. He should look for A2DP because that has the best quality audio. Analog could cause a bit of delay, though. That's why keeping it digital is important. If there is delay, Mike can possibly adjust it in his TVs audio settings.

How can I do Karaoke on my computer?

Manny from Whittier, CA

Episode 1229

Manny set up Karaoke in his house through his computer, but he's having lag issues. Leo says that the best way is to buy an all-in-one Karaoke box, as they're pretty cheap these days. But if he doesn't want to have that extra expense, Leo says there will be lag when plugging a mic into an analog jack. It won't be much lag, but it'll be enough to drive him a bit nuts. Leo suggests using different software that can compensate for that. Manny should try PCDJ.

Why does the audio get out of sync with my Bluetooth headphones?

Paul from Michigan

Episode 1191

Paul is frustrated because his audio is out of sync with his video. Leo says that's a common issue because audio is much easier to compress and decompress than video. But Paul says it gets out of sync with his wireless Bluetooth headphones only. Leo says that's a latency issue. Wired headphones would likely solve the problem.

Why do I have latency and lag on the internet?

John from Oak Park, CA

Episode 1048

John takes music lessons on the internet to play the harmonica. The teacher uses Adobe's Meeting, but he has extreme latency issues. Leo says it could be hardware, but more likely it's the ISP's data flow rate with Adobe. It's causing a delay from Adobe to John and back. Leo suggests doing PingTest.net to see what the latency is. If it looks good, then the problem is with Adobe.

What's the best HDTV for gaming?

Episode 1010

Andrew from Rochester, MI
HDTV

Roger wants an HDTV that he can use for gaming, and he needs it to have low latency. Leo says that the key feature is response time. Old style TV sets had a response time of virtually zero, which is why they're still the best option. LCDs are about 4 milleseconds, which isn't bad, but it does give some motion blur. Latency has to do with connectivity. If he can turn off processing, he'll get better performance.