...Because most audio players don't loop cleanly, the included wave files contain enough complete patterns to play 2 minutes without looping.
Every sinusoid in the file contains a whole number of cycles. This ensures clean looping and allows windowless FFT analysis.
Each sinusoid in the file can have a unique phase and amplitude.
The included wave file generation utility uses GNU MPFR library for extended precision floating point math and FFTW for verification.
Output level is nearest possible to 0 dBTP without going over.