Speakerphone Loudness - Two OMAP 3430 Phones: Nokia N900 and Motorola Droid

Speakerphones: A New Test

A huge contributing factor for a lot of smartphone shoppers is how loud the smartphone's speaker goes. Rather than subject you to objective cricisms that really are just a measure of how well my hearing is, we're going to report speakerphone volume.

To do this, I place a call to the local ASOS automated weather service (which plays a continual report of the weather in an emotionless computerized voice) on the speakerphone at maximum volume. I then use an Extech USB sound level datalogger connected to my computer and collect data until the call hangs up automatically, usually one to two minutes, and take the average. Unfortunately I lack an anechoic chamber, so ambient noise level was a somewhat loud 51.8 dBA.

The microphone is 6 inches above the smartphone, display side up.

We can see that the N900 is the loudest of the bunch, likely thanks in part to the dual speakerphone setup which is along the sides of the phone. It's an excellent design that means volume is the same face up and face down. Both the HTC Droid Incredible and Motorola Droid put the speakerphone on the bottom of the device, though they're equally loud here.

The iPhone 3GS puts the speakerphone at the bottom of the device, giving it good face up and face down performance, but it's still measureably quieter than the bunch. I'm going to have another article soon with some other interesting iPhone specific findings...

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