This is the Windows app named PerfectSineWaves whose latest release can be downloaded as waveutil_1.30.7z. It can be run online in the free hosting provider OnWorks for workstations.
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SCREENSHOTS
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PerfectSineWaves
DESCRIPTION
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
Categories
This is an application that can also be fetched from https://sourceforge.net/projects/perfectsinewaves/. It has been hosted in OnWorks in order to be run online in an easiest way from one of our free Operative Systems.
