Android Device Latency

DRAFT - ALL INFORMATION SHOULD BE CONSIDERED INACCURATE

We've tested a number of Android devices for their round-trip audio latency. The following is a list of devices which either conform to the Android Professional Audio latency specification (less than 20ms), or are close to it (under 50ms).

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Android Pro Audio compliant (<20ms)

These devices have less than 20ms round-trip audio latency.

Manufacturer	Model	Android version	Build number	Round-trip latency (ms)
HTC / Google	Nexus 9	7.0.0 Nougat	NRD91R	15.22
LG / Google	Nexus 5X	8.1.0 Oreo MR1	OPM1.170918.001	17.72
Huawei / Google	Nexus 6P	8.0.0 Oreo	OPR5.170623.007	16.83
Google	Pixel XL	9.0.0 Pie	PPR2.181005.003	13.52
Google	Pixel 2	8.1.0 Oreo MR1	OPM1.171019.011	18.08
Samsung	Galaxy Note 9	8.1.0 Oreo MR1	M1AJQ.N960FXXUOARZM	19.33

Nearly compliant (<50ms)

These devices have less than 50ms round-trip audio latency.

Manufacturer	Model	Android version	Build number	Round-trip latency (ms)	Notes
Samsung	Galaxy S9 (SM-G960F)	8.0.0 Oreo	G960FXXS2BRI1	20.95	SLES was used (see bug)

Test method

The following method was used to measure the round-trip audio latency:

• Insert loopback adapter into 3.5mm jack (if device has one) or into the USB headphone adapter supplied with the device
• Run LoopbackApp
• If device is running Android 8.0 (Oreo) or above go to Settings->Audio Thread Type change to “native (AAudio)”
• Tap “Calibrate sound level now” to set the volume automatically
• Tap the “Round-trip latency test”
• Run test 6 times taking the average