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Latency tester for Android applications made with LibPd.

Displays the time for a sound to be triggered in Pd through to detection in the microphone by bonk~ - recording latency will be roughly 1/2 this time. The bonk~ detector itself seems to add between 5ms and 15ms on to the total time in the round-trip.

Run It

  1. Download the apk to your phone: PureDataLatencyTester.apk (need to enable 'Allow Unknown Sources' in the device's Settings >> Applications >> Unknown sources)

  2. Launch the app.

  3. Turn the volume all the way up and wait for 11 'ponk' sounds - numbers should now appear.

  4. Record the stable median value in the table below:

Results

Device Name

OS Version

Round-trip Latency

Inq Cloud-touch

2.2

560ms

Samsung Galaxy Tab

2.2

650ms

Acer Iconia A500

3.2

750ms

HTC Legend

2.2

540ms

HTC Sensation

2.3

580ms

Samsumg Galaxy Nexus

4.2.2

512ms

Samsung Galaxy S

2.3.3

535ms

Samsung Galaxy S

2.3.6

lots of jitter

Samsung Galaxy S Plus

2.3.3

530ms

Samsung Galaxy S II (with Cyanogenmod 7)

2.3.7

558ms

Samsung Galaxy Tab 10.1

3.1

539ms

Samsung Nexus S

2.3.6

555ms

Evo 4g Cyanogenmod

2.3.7

580ms

Samsung Infuse

2.2.1

600ms

Samsung Droid Charge

2.2.1

760ms

lg optimus gt540

1.6

498ms

nexus one

2.3.3

600ms

asus transfromer

3.2

474ms

LG Optimus 2x

2.2.2

460ms

HTC Desire

2.2

580ms

SE Experia ARC

2.3.3

520ms

Woxter 70W

2.3

crashes...

Nexus S

4.0 (beta)

380ms

Sony Xperia P

4.0.4

644ms

Sony Xperia P

4.1.2

640ms (sometimes 740ms)

Sony Xperia V

4.1.2

683ms

Sony Xperia Z3+

7.0

650ms

Reference measurements

iPod Touch 2g

iOS 3.1.2

90ms

Macbook Pro

?

48ms

Other stuff



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