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Samsung SLM Cell Phone Review - Audio Quality

Alfredo Padilla Published on December 17, 2007 Comment on this

Intro Making/Receiving Calls Software Other Features

Tour & Design Messaging Battery Life Value & Comparisons

Audio Quality Organizer Connectivity Conclusion

Imaging Multimedia Hardware Ratings & Specs

Any phone has to have good audio quality. To test this we use the same professional equipment and software used by many handset manufacturers. To simulate the human head and ear we use a Head And Torso Simulator (HATS). To analyze the quality of the sound we use Listen Inc's SoundCheck software. For more information on how we test see this article.

Sound Receive Frequency Response (7.49)
The chart above details the performance of the Samsung SLM when receiving audio from the other end of the call. This is how other people will sound to you. the blue line indicates the performance of the handset while the red lines are the limits against which we test. As you can see the Samsung SLM stayed within our limits for the most part, with only a slight deviation around the middle frequencies that shouldn't have too much of an impact. What might have more of an impact is that the SLM's performance drops off much to quickly at the higher frequencies, which could make some voices sound clipped. You can see below that the impact of this deviation is that the SLM put up the second worst score amongst our comparison phones.

Cell Phone	Samsung SLM	Razr2 V8 (on CARRIER)	LG Venus (on CARRIER)
Score	7.49	9.16	7.78
Received Sound Frequency Response Graph (click to view)

Cell Phone	T-Mobile Shadow (on CARRIER)	Sony Ericsson W580i (on CARRIER)	Helio Fin (on CARRIER)
Score	5.68	7.65	9.33
Received Sound Frequency Response Graph (click to view)

Sound Send Frequency Response (8.68)
In this test we measure the quality of the sound sent by the handset, so this is how you will sound to those on the other end of the call. The chart above indicates the Samsung SLM's performance with a blue line while the two red lines are the limits against which we test. You can see that the Samsung SLM performed very well in this test, with the curve falling squarely within our limits across the range of frequencies. This means the quality of your voice as heard by others will be very good. You can see below that the SLM put up the best score amongst our comparison phones in this test.

Cell Phone	Samsung SLM	Razr2 V8 (on CARRIER)	LG Venus (on CARRIER)
Score	8.68	7.46	7.24
Received Sound Frequency Response Graph (click to view)

Cell Phone	T-Mobile Shadow (on CARRIER)	Sony Ericsson W580i (on CARRIER)	Helio Fin (on CARRIER)
Score	6.40	6.17	8.25
Received Sound Frequency Response Graph (click to view)

Handset Side Tone (8.25)
Side tone is the small amount of your own voice that is piped back into your ear so you can judge how loudly you're speaking. We test phones against a standard of -18 decibels. The Samsung SLM scored -19.75 decibels in our side tone test, which is a little on the low side but not significantly so. You can see below that a couple of handsets did better than the SLM on this test, but several others did significantly worse. In practice you may speak just a tad too loudly at times, but this should not be a pronounced problem.

Cell Phone	Side Tone Measurement	Score
Samsung SLM	19.75	8.25
Razr2 V8	15.42	7.42
LG Venus	18.98	9.02
T-Mobile Shadow	12.64	4.64
Sony Ericsson W580i	18.77	9.23
Helio Fin	21.25	6.75

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