perfectsinewaves online with Winfy

We have hosted the application perfectsinewaves in order to run this application in our online workstations with Wine or directly.

Quick description about perfectsinewaves:

In this project, a perfect PCM sine wave is one that contains a single frequency at 0 dBTP and no error harmonics at all. A bit-perfect PCM sine wave has error harmonics due to encoding quantization, but they are at the minimum level possible for the chosen encoding.

The files hold a sequence of one or more complete copies of a repeating pattern. A file containing a single pattern can be played in a loop to extend the play time. Because most audio players don't loop cleanly, the included wave files contain enough complete patterns to play 2 minutes without looping.

Every tone in the file must contain a whole number of sine cycles. This ensures looping and windowless FFT compatibility.

Each tone 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.

Features:

• Audio test tone calibration signals: single tone, multi-tone
• High resolution true peak level measurement utility included
• Output level: 0 dB true peak (new for v 1.2)
• The most accurate sine wave generation utility available
• Bit-perfect encoding for all sample formats
• Fractional frequency support
• Extended precision DFT command
• Double precision FFT command
• Future: quad precision FFT
• generator choices: MPFR extended precision or IFFTW double precision
• No file length limit

User interface: Command-line.

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