T-Mobile Wing Review - Audio Quality
The T-Mobile Dash has a wide range of features, but the most important feature is making calls. To test the quality of the calls that it makes, we use the same professional testing equipment that many of the manufacturers themselves use; a HATS (Head and Torso Simulator) that simulates the human head and ear and an electro-acoustic analysis program called
SoundCheck. This combination allows us to analyze the performance of the phones in depth, analyzing the quality of the sound that the phones send and receive. For more details on how we test the performance of cell phones, see
this article on how we test.
Sound Receive Frequency Response (6.14)
The Wing had some interesting results in this test, which measures the frequency response of sound the phone receives when it is used as a handset. This represents what someone talking to you over the phone sounds like. The graph shows the frequency response of the phone (show by the blue line) with low frequencies at the left and high at the right. The red lines show the margins that the standard we test against sets. An ideal phone would produce a frequency response that moves between the upper and lower margins. The Wing did reasonably well in this test, but some frequencies were somewhat exaggerated. At the higher end of the limits, the response of the Wing goes above the limits somewhat. This means that the higher frequencies are more exaggerated, which could lead to voices sounding thin and reedy.
Sound Send Frequency Response (8.06)
The Wing did an excellent job with the sound it sends (such as you talking into the phone). In this test, the frequency response curve was completely within the limits, so your voice when you are talking into the Wing should sound pretty much as it should. None of the frequencies are overly exaggerated or suppressed, and there are no major peaks or dips in the line that indicate a problem. Overall, the sound sent by the Wing is excellent; your voice over this phone should sound natural and easy to understand.
Handset Side Tone (7.02)
Side tone is how you hear your own voice when you are on the phone. The handset injects a small amount of your captured voice back into the speaker so you can judge how loud your voice is. The Wing did well in this test. We measured the side tone the Wing produced at -20.98 decibels. That's a touch low but only by just under three decibels (the standard we measure phones against calls for a side tone of -18 decibels). This is not likely to be a problem since in most situations the Wing will produce enough side tone that you don't end up shouting when you don't need to.
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