LA100 Sequences and Test Tone Files

A zipped collection of popular LA100 test sequences in WAV format are provided for download below in 24bit 96kHz and 16bit 48kHz formats.

The recordings are aligned to -18dBFS. 16bit files have had noise-shaped dither applied. Residual noise: 16bit files -69dB ITU-R 468-wtd REL -18dBFS, 24bit files -84dB ITU-R 468-wtd REL -18dBFS.

Lindos Test CD1

This CD provides an accurate method for measuring the specifications of CD players. We have also provided the files for download as these are a useful collection of test tones. All tracks have been recorded at 15dB below digital full scale (FS) and this is referred to as the Alignment Level (AL) throughout the track listing below.

Each track has been dithered using TPDF (triangular probability density function) noise.

For more information on dither see “Quantization and Dither: A Theoretical Survey” Stanley Lipshitz, Robert Wannamaker, and John Vanderkooy published in the J. Audio Eng. Soc., Vol. 40, No. 5, 1992, pp. 355-375 (available from the AES).

Track Listing

Nominal Level Level 0dB AL, 20 secs, L+R 1 1 kHz, 0dB AL Noise Measurement L+R, 20 secs 2 40 Hz, -40dB AL 3 40 Hz, -50dB AL 4 40 Hz, -60dB AL 5 100 Hz, -50dB AL 6 100 Hz, -40dB AL 7 100 Hz, -50dB AL 8 315 Hz, -40dB AL 9 Silence with dither 10 Silence without dither Headroom and Linearity 1 kHz, 20 secs, L+R 11 0dB AL 12 +4dB AL 13 +8dB AL 14 +9dB AL 15 +10dB AL 16 +14dB AL 17 +15dB AL 18 -10dB AL 19 -20dB AL 20 -30dB AL 21 -40dB AL 22 -50dB AL 23 -60dB AL 24 -70dB AL 25 -80dB AL

Spot Frequencies 0dB AL, 20 secs, L+R 26 1 kHz 27 20 Hz 28 25 Hz 29 31.5 Hz 30 40 Hz 31 50 Hz 32 63 Hz 33 80 Hz 34 100 Hz 35 125 Hz 36 160 Hz 37 200 Hz 38 250 Hz 39 315 Hz 40 400 Hz 41 500 Hz 42 630 Hz 43 800 Hz 44 1 kHz 45 1.25 kHz 46 1.6 kHz 47 2 kHz 48 2.5 kHz 49 3.15 kHz 50 4 kHz 51 5 kHz 52 6.3 kHz 53 8 kHz 54 10 kHz 55 12.5 kHz 56 16 kHz 57 20 kHz

Crosstalk 0dB AL,20 secs 58 100 Hz L 59 1 kHz L 60 6.3 kHz L 61 10 kHz L 62 100 Hz R 63 1 kHz R 64 6.3 kHz R 65 10 kHz R IM Distortion checks 0dB AL, L+R 66 0.8/1.195 kHz, IM TDF 67 8.0/11.95 kHz, IM TDF 68 100 Hz/5 kHz +0.3dB AL Transient checks 0dB AL, 10 secs, L+R 69 1kHz square Frequency Sweeps 0dB AL, 10 secs, L+R 70 10 Hz – 100 Hz 71 100 Hz – 1 kHz 72 1 kHz – 10 kHz 73 10 kHz – 20 kHz 74 10 Hz – 10 kHz, 30 secs Exponential Decay to Noise from 0dB AL, 20 secs, L+R 75 1kHz, 60 dB in 10s