Motorola Razr2 V9m on Verizon Cell Phone Review - Audio Quality
Of course one of the most important things you do with any cell phone is make calls, and the quality of the audio sent and received by the phone is probably a feature you're going to notice a lot, even if you don't think about it much beforehand. We test audio quality during a call using professional testing equipment. We place the phone on a HATS (Head and Torso Simulator), which simulates the human head and ear. We analyze the sound using
SoundCheck, a professional electro-acoustic program used by many cell phone manufacturers. For more details on how we test the audio performance of phones see
this article.
Sound Receive Frequency Response (8.28)
The graph above was produced by Soundcheck and illustrates the frequency response of sound received by the Razr2 V9m. This is a measure of how another person's voice sounds to you. The blue line represents the Razr2 V9m's performance while the two red lines delineate the limits against which we test. As you can see the Razr2 V9m did a good job of staying within the limits. The only possible issue might be that the curve drops off a little too quickly at the end, which means voices may sound slightly clipped. As you can see below the Razr2 V9m from Verizon put up a good, if not spectacular, score. It performed slightly better than the V9m on Sprint, but in real world use, you won't hear much difference between the two.
| Cell Phone |
Razr2 V9m (on Verizon) |
Helio Fin (on Helio) |
Razr2 V9m (on Sprint) |
| Score |
8.28 |
9.33 |
7.48 |
| Received Sound Frequency Response Graph (click to view) |
 |
 |
 |
Sound Send Frequency Response (7.34)
In this test we measure the quality of sound sent by the Razr2 V9m. This is how you sound to people on the other end of a call. The graph above indicates the Razr2 V9m's performance in a blue line, with two red lines outlining the limits against which we test. The Razr2 V9m did not perform as well on this test as it did in the receive test. It dropped slightly below the limits at lower frequencies and peaked above the limits at the upper ranges. This means your voice may sound a little bit thin and reedy. In this case, the Verizon Razr2 V9m's score was very similar to the Sprint version and is middling overall.
| Cell Phone |
Razr2 V9m (Verizon) |
Helio Fin(on Helio) |
Razr2 V9m (Sprint)(on Sprint) |
| Score |
7.34 |
8.25 |
7.16 |
| Received Sound Frequency Response Graph (click to view) |
 |
 |
 |
Handset Side Tone (9.78)
Side tone is the small amount of your own voice that phones pipe back into your ear so you can judge how loud you're talking. As with Sprint's iteration of the Razr2 V9m, the Verizon version performed well in this test, averaging -17.78 decibels. This is right about where we want it because ideally, phones should score -18 decibels. This means you hear yourself talk at about the right level; you shouldn't end up shouting or whispering when using this phone. The Razr2 V9m put up one of the better scores we've seen.
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1350 |
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