libDSP

libDSP is C class library of common digital signal processing functions. There is also a wrapper for the C language.

Current (vector) functions:
- Float to integer conversion with rounding
- Addition (real, complex)
- Subtraction (real, complex)
- Multiply (real, complex)
- Division (real, complex)
- 1/x (real)
- Absolute value (real)
- Square root (real)
- Zero (real, complex)
- Set (real, complex)
- Clip (real)
- Copy (real, complex)
- Convolution (real)
- Correlation (real)
- Autocorrelation (real)
- Dot product (real)
- Min and Max (real)
- Mean (real)
- Median (real)
- Negate (real)
- Normalization (real)
- Product (real)
- Reverse
- Scale to -1..1 and 0..1 (real)
- Sort (real)
- Standard deviation (real)
- Sum (real)
- Square (real)
- Integer-Float and Float-Integer conversion: 8, 12, 16, 24, 32 bits (real)
- Cartesian-Polar and Polar-Cartesian conversion
- Cross correlation (real)
- Energy (real)
- Magnitude
- Power
- Phase
- Decimation
- Interpolation
- RMS (real)
- Variance (real)
- Peak level in dB (real)
- Window functions: Bartlett, Blackman, Blackman-Harris, Cosine tapered, Exponential, Flat-top, Generic cosine, Hamming, Hanning, Kaiser, Kaiser-Bessel, Tukey, Dolph-Chebyshev
- Mix (real)
- Spatialize (real)
- Interleave/Deinterleave (real)
- Rebuffer
- Deg-Rad and Rad-Deg conversion
- FIR filter
- IIR filter
- DFT, DCT, DST
- FFT filter
- Multirate decimation/interpolation with FFT, FIR and IIR filters
- Frequency band flipping
- Hankel