Audiotest is a relatively small test CD. It lacks phase checks, instrument demos, channel separation checks and the like.
Audiotest tracks are encoded in FLAC, the Free Lossless Audio Codec format.
Official FLAC website, with an installer for Windows and links for other OS:
http://flac.sourceforge.net/.
A FLAC-capable player for MacOS X, Cog.
A toolkit for transcoding between several audio formats for MacOS X, xACT. This can decode to wave or AIFF, from which ITunes can encode to its own lossless format.
Under Windows, Foobar2000 and the latest version of Winamp can play FLAC files and decode to wave files.
The tracks can be burned onto an audio CD with Exact Audio Copy.
01 L-R Channel Test.flac
02 Moon Arpeggio.flac
03 White Noise, 22050 Hz, Left Channel.flac
04 White Noise, 22050 Hz, Right Channel.flac
05 White Noise, 22050 Hz.flac
06 Brown Noise, 22050 Hz.flac - Brownian noise has a power falloff of 6 dB/octave.
07 Pink Noise, 22050 Hz.flac - pink noise has a power falloff akin to that of most music and is often used for burn-in loops.
08 20 Hz Square.flac
09 40 Hz Square.flac - this is a heavy bass load test that’ll exercise the headphone output on a player.
10 Moog Square, C0.flac - Moog Mini C0 square VCO tone.
11 80 Hz Square.flac
12 1000 Hz Sine.flac
13 2000 Hz Sine.flac
14 3000 Hz Sine.flac
15 4000 Hz Sine.flac
16 5000 Hz Sine.flac
17 6000 Hz Sine.flac
18 7000 Hz Sine.flac
19 8000 Hz Sine.flac
20 9000 Hz Sine.flac
21 10000 Hz Sine.flac
22 11000 Hz Sine.flac
23 12000 Hz Sine.flac
24 13000 Hz Sine.flac
25 14000 Hz Sine.flac
26 15000 Hz Sine.flac
27 16000 Hz Sine.flac
28 17000 Hz Sine.flac - Directsound and KS output with Foobar2000 or any other Windows player might start sounding weird with tones above 17 KHz; this is a Windows kernel mixer bug. A “clean” output plugin is one that plays tones over 17 KHz correctly, usually ASIO for Foobar2000.
29 18000 Hz Sine.flac
30 19000 Hz Sine.flac
31 20000 Hz Sine.flac
32 22050 Hz Tone.flac - at 22050 Hz there’s already no difference between wave shape, sine, square or saw. CD Audio’s limited resolution is shown this way - at 22050 Hz there’re only two coordinates, “top” and “bottom”. Basically the higher the frequency, the less samples are available for drawing in CD Audio format.
33 Full-range Sweep, -3.2 dB.flac - this is what it says, should sound progressively thinner. If it doesn’t, switching output plugins for the player might help.
34 A440, -80 dB.flac - this is actually the lowest that Cooledit allowed generating a tone in, which is also telling with regards to CD Audio’s real dynamic range. Yes, it can span ~96 dB (probably), but real noise floor is at around -80 dB as demonstrated by this example.
35 A440 Sawtooth, -72 dB.flac - yes, sawtooths sound more annoying than sines.
36 A440 Sawtooth, -60 dB.flac
37 A440 Sawtooth, -48 dB.flac
38 A440 Sawtooth, -32 dB.flac
39 A440 Sine, -24 dB.flac
40 A440 Sine, -9 dB.flac
41 A440 Sine, -6 dB.flac
42 A440 Sine, -3 dB.flac
43 A440 Sine, 0 0dB.flac - A4 reference tone, and distortion test, volume should be increased slowly from very low to a point where headphones/speakers start distorting.
44 Cooledit Tone - Out Of Control Sine.flac - this is a better distortion test than the straight A4.
45 Moog Bass Pick.flac - a possible obsession for bassheads.
46 Square Wave Grind.flac - speaker test. Try this when testing speakers in a store. Mostly bass with some midrange. Also works as a simple phase test - if speaker domes pop in instead of out, phase is inverted somewhere in the chain (not necessarily speaker wires - could be reversed mains connection).
47 Bobby Prince - The Imp’s Song.flac - a technically difficult piece for speakers or headphones to perform, this is from Doom (mus_e1m2.mus), by the way…
48 Bach - Prague Radio Orchestra - Brandenburg Concerto No. 1 in F-Major.flac
49 Bobby Prince - Nobody Told Him About id (square, saw synths, B-cue).flac - another Doom piece (mus_e2m8.mus), this has square, multi-saw, bassoon and an SC-55 standard drumkit. Reason render, also with a binaural wave mixed in.
50 Kim Jensen - Funtendo-02 (bass & definition test).flac - a piece by Kim Jensen, this has a background warm pad, piano, acoustic bass, pizzicato, a woody drumkit and guitar. The pad must always remain audible and not masked by anything, also the bass and pizzicato can distort some headphones (or the amp stage).
51 Robert Prince - Darkhalls (low-mid balance comparison test).flac - the bass and bowed glass pad instruments were mixed at the same pan value and loudness, so they should be relatively even. This should demonstrate well how clearly midrange is reproduced, and show leaning towards either bass or midrange/treble.
52 Kevin Schilder - Hexen II Medley (ambience test).flac - the Goblin pad instrument should be swirling in the background clearly.
53 Kevin Schilder - The Glacier.flac - Heretic mus_e2m9.mus.
54 Bobby Prince - The Imp’s Song, v. 2.flac - a second version of the Imp’s Song, with different instruments and maximised into oblivion, with clipped dynamic range. This is a good demo of a piece with compressed dynamics, should be painful and headache-inducing on finer headphones.
55 Hallharp.flac - a reverberation demo. Sounds way nicer in 96/24, but hey…
56 ERinger-2.flac - just a ringtone.
57 Game11-guitar.flac - a synth line and a distorted guitar solo.
58 Eringer-3.flac - another ringtone.
59 Ubersynth.flac - a compound sine/saw/square/triangle synth instrument playing. Hey, it’s got everything there ever is in a pure electro or rave piece, except drums…
60 - Tranq-F.flac - inspired by an old Russian rock song. This has Fender Jazz Bass, Korg synthesised strings and a Moog Mini V sweep pad.
61 - Moog Soft Sine Pad - Stress Test.flac - this is a pad made mostly of sine waves, and so it will stress anything pretty hard.
62 - Digital Silence, 30 seconds.flac
63 - Digital Silence, 5 Minutes.flac
