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T-Mobile Razr2 V8 Cell Phone Review - Audio Quality

Mark Brezinski
Published on December 10, 2007 Comment on this






Audio quality should be one of the most important features on a phone. Calling and communication should be its primary goals, regardless of all the bonus features its carriers and manufacturers slap on it. We therefore take our sound testing very seriously and use all sorts of official equipment. The rig we strap the phone to is a head and torso simulator, or HATS, which simulates the human ear and voice. We then use SoundCheck, a professional electro-acoustic program, to analyze the sound quality. Both our hardware and software are used by many cell phone manufacturers in their own testing. To read more on our methods, click here.

Sound Receive Frequency Response (9.16)



The Razr2 V8 performed pretty close to perfect on the received frequency test. In the graph above, the blue line represents the Razr2 V8's decibel level at different frequencies of the human voice. The red lines are the limits it should fall between. The blue line comes very close to bisecting the limits, which is the ideal measurement. Though it isn't the highest score in the table below, it's definitely one of our best results in this category.

Cell Phone T-Mobile Razr2 V8 Helio Fin (on Helio) Samsung Juke (on Verizon)
Score 9.16 9.33 6.89
Received Sound Frequency Response Graph (click to view)

Cell Phone Sony Ericcson W580i (on Sprint) LG Chocolate VX8550(on Verizon) LG Venus(on Verizon)
Score 7.65 8.27 7.78
Received Sound Frequency Response Graph (click to view)

Sound Send Frequency Response (7.46)



The Razr2 V8 doesn't handle your own voice as carefully as the above test would suggest. It peaks outside the limits a little towards the beginning, and drops off too soon at the end. The beginning overemphasis will mean lower tones might sound a bit tinny. The sharper drop at the end means higher frequencies will sound a bit clipped.


Cell Phone T-Mobile Razr2 V8 Helio Fin (on Helio) Samsung Juke (on Verizon)
Score 7.46 8.25 8.37
Received Sound Frequency Response Graph (click to view)

Cell Phone Sony Ericcson W580i(on Sprint) LG Chocolate VX8550(on Verizon) LG Venus(on Verizon)
Score 6.17 8.06 7.24
Received Sound Frequency Response Graph (click to view)

Handset Side Tone (7.42)



Side tone refers to the amount of your own voice the phone plays back to you. The ideal measurement is -18 decibels, and the Razr2 V8 was a bit off with -15.42 decibels. This means your voice will sound louder than it actually is, which might make you speak more quietly than you should.

Cell Phone Side Tone Measurement Score
T-Mobile Razr2 V8 15.42 7.42
Helio Fin 21.25 6.75
Samsung Juke 22.88 5.02
Sony Ericcson W580i 18.77 9.23
LG Chocolate VX8550 17.85 9.85
LG Venus 18.98 9.02


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