Precision Test Signals

It seems natural to want to have a library of test tones to be able to individually select and play through the multi-channel audio system you pieced together from the finest components and speakers you could justify. Unless you evaluate your audio system using a non-subjective means such as this collection of primarily pure frequencies (and a dB meter), how will you ever know when its time to stop spending money? Or be able to prove scientifically beyond a shadow of a doubt that, yes, you actually did need to buy different speakers or invest $800 in Auralex acoustical room treatment?Not sure if your subwoofer is sub enough? I recommend cranking up track #7 for 10 glorious seconds of 5 Hz. Be careful-- you could fry something!I recommend this disc as a useful tool. I fault it a star because there is no printed track listing that comes with it. So I made my own-- see below.Track 01 Introduction 1:26Track 02 (Track 03 Introduction) 0:11Track 03 QUICK SWEEP 20 Hz - 20.480 kHz Quick Frequency Check 0:10Track 04 SLOW SWEEP 40Hz - 20kHz Quick Frequency Check 2:32Track 05 (Quick Frequency Check Complete) 0:04Track 06 (Track 07 Introduction) 0:04Track 07 5Hz Detailed Frequency Check 0:10Track 08 (Track 09 Introduction) 0:04Track 09 6Hz Detailed Frequency Check 0:10Track 10 (Track 11 Introduction) 0:04Track 11 8Hz Detailed Frequency Check 0:10Track 12 (Track 13 Introduction) 0:04Track 13 10Hz Detailed Frequency Check 0:10Track 14 (Track 15 Introduction) 0:04Track 15 13Hz Detailed Frequency Check 0:10Track 16 (Track 17 Introduction) 0:04Track 17 16Hz Detailed Frequency Check 0:10Track 18 (Track 19 Introduction) 0:04Track 19 20Hz Detailed Frequency Check 0:10Track 20 (Track 21 Introduction) 0:04Track 21 25Hz Detailed Frequency Check 0:10Track 22 (Track 23 Introduction) 0:04Track 23 32Hz Detailed Frequency Check 0:10Track 24 (Track 25 Introduction) 0:04Track 25 40Hz Detailed Frequency Check 0:10Track 26 (Track 27 Introduction) 0:04Track 27 50Hz Detailed Frequency Check 0:10Track 28 (Track 29 Introduction) 0:04Track 29 63Hz Detailed Frequency Check 0:10Track 30 (Track 31 Introduction) 0:04Track 31 80Hz Detailed Frequency Check 0:10Track 32 (Track 33 Introduction) 0:04Track 33 101Hz Detailed Frequency Check 0:10Track 34 (Track 35 Introduction) 0:04Track 35 127Hz Detailed Frequency Check 0:10Track 36 (Track 37 Introduction) 0:04Track 37 160Hz Detailed Frequency Check 0:10Track 38 (Track 39 Introduction) 0:04Track 39 202Hz Detailed Frequency Check 0:10Track 40 (Track 41 Introduction) 0:04Track 41 254Hz Detailed Frequency Check 0:10Track 42 (Track 43 Introduction) 0:04Track 43 320Hz Detailed Frequency Check 0:10Track 44 (Track 45 Introduction) 0:04Track 45 403Hz Detailed Frequency Check 0:10Track 46 (Track 47 Introduction) 0:04Track 47 508Hz Detailed Frequency Check 0:10Track 48 (Track 49 Introduction) 0:04Track 49 640Hz Detailed Frequency Check 0:10Track 50 (Track 51 Introduction) 0:04Track 51 806Hz Detailed Frequency Check 0:10Track 52 (Track 53 Introduction) 0:04Track 53 1.016kHz Detailed Frequency Check 0:10Track 54 (Track 55 Introduction) 0:04Track 55 1.280kHz Detailed Frequency Check 0:10Track 56 (Track 57 Introduction) 0:04Track 57 1.613kHz Detailed Frequency Check 0:10Track 58 (Track 59 Introduction) 0:04Track 59 2.032kHz Detailed Frequency Check 0:10Track 60 (Track 61 Introduction) 0:04Track 61 2.560kHz Detailed Frequency Check 0:10Track 62 (Track 63 Introduction) 0:04Track 63 3.225kHz Detailed Frequency Check 0:10Track 64 (Track 65 Introduction) 0:04Track 65 4.064kHz Detailed Frequency Check 0:10Track 66 (Track 67 Introduction) 0:04Track 67 5.120kHz Detailed Frequency Check 0:10Track 68 (Track 69 Introduction) 0:04Track 69 6.451kHz Detailed Frequency Check 0:10Track 70 (Track 71 Introduction) 0:04Track 71 8.128kHz Detailed Frequency Check 0:10Track 72 (Track 73 Introduction) 0:04Track 73 10.240kHz Detailed Frequency Check 0:10Track 74 (Track 75 Introduction) 0:04Track 75 12.902kHz Detailed Frequency Check 0:10Track 76 (Track 77 Introduction) 0:04Track 77 16.255kHz Detailed Frequency Check 0:10Track 78 (Track 79 Introduction) 0:04Track 79 20.480kHz Detailed Frequency Check 0:10Track 80 (Track 81 Introduction) 0:12Track 81 SLOW SWEEP 5Hz - 20.480kHz Detailed Frequency Check 1:00Track 82 (Track 83 Introduction) 0:04Track 83 FULL SPECTRUM WHITE NOISE Detailed Frequency Check 1:00Track 84 (Detailed Frequency Check Suite Complete) 0:05Track 85 (Track 86 Introduction) 0:04Track 86 1Hz SQUARE WAVE Phase Response Suite 0:10Track 87 (Track 88 Introduction) 0:04Track 88 10Hz SQUARE WAVE Phase Response Suite 0:10Track 89 (Track 90 Introduction) 0:04Track 90 100Hz SQUARE WAVE Phase Response Suite 0:10Track 91 (Track 92 Introduction) 0:04Track 92 1.0kHz SQUARE WAVE Phase Response Suite 0:10Track 93 (Track 94 Introduction) 0:04Track 94 4.410kHz SQUARE WAVE Phase Response Suite 0:10Track 95 (Phase Response Suite Complete) 0:04Track 96 (Track 97 Introduction) 0:04Track 97 1.0kHz SINUSOIDAL AT MAX LEVEL Saturated Distortion Suite 1:00Track 98 (Track 99 Introduction) 0:08Track 99 50Hz + 5kHz SINUSOIDAL Saturated Distortion Suite 1:00

I was expecting more, something more professional to test and calibrate speakers and individual drivers. Many free ones like this online from Audio and DIY sites that I already have. I was hoping this would have recordings without the clicks between test, also the test signals are too short when using equipment to calibrate, doesn't give enough time. Only about 1/4 of the actual CD is used so it had plenty of space to add more time. I think it's overpriced for what you get. For basics it's fine but can be had for much less!

I would have liked more left end right sounds instead of both at same time. The pink noise was good to check that both channels were coming through well balanced, i.e. in the center as it is supposed to be.

Does what it says it will. Frequency sweeps that exercise the speaker system. Would not consider this a diagnostic CD, it simply emits various frequencies. What you do about that aural info likely will require additional testing, e.g frequency generator. Price wise clearly way overpriced. As others have mentioned there are other similar tests available online for download.

Works just fine when used with the BAFX Sound Level meter.

The test tones were on par and helped tune a 5 amp system which normally would have taken forever!!! Anyway the best was the gap inbetween tones. It allowed plenty of time to change my oscilloscope connection.

Easy to use. Voice identification of the frequency of each track on the frequency sweep section is very helpful.

Works great. Very well done and super useful. But like others have said, you'll need to notate your own index in order to know what track is what.