- fast_ceil
alias fast_ceil = llvm_ceil
Undocumented in source.
- fast_ceil
alias fast_ceil = ceil
Undocumented in source.
- fast_cos
alias fast_cos = llvm_cos
Undocumented in source.
- fast_cos
alias fast_cos = cos
Undocumented in source.
- fast_exp
alias fast_exp = llvm_exp
Undocumented in source.
- fast_exp
alias fast_exp = exp
Undocumented in source.
- fast_exp2
alias fast_exp2 = llvm_exp2
Undocumented in source.
- fast_exp2
alias fast_exp2 = exp2
Undocumented in source.
- fast_fabs
alias fast_fabs = llvm_fabs
Undocumented in source.
- fast_fabs
alias fast_fabs = fabs
Undocumented in source.
- fast_floor
alias fast_floor = llvm_floor
Undocumented in source.
- fast_floor
alias fast_floor = floor
Undocumented in source.
- fast_log
alias fast_log = llvm_log
Undocumented in source.
- fast_log
alias fast_log = log
Undocumented in source.
- fast_log10
alias fast_log10 = llvm_log10
Undocumented in source.
- fast_log10
alias fast_log10 = log10
Undocumented in source.
- fast_log2
alias fast_log2 = llvm_log2
Undocumented in source.
- fast_log2
alias fast_log2 = log2
Undocumented in source.
- fast_pow
alias fast_pow = llvm_pow
Undocumented in source.
- fast_pow
alias fast_pow = pow
Undocumented in source.
- fast_round
alias fast_round = llvm_round
Undocumented in source.
- fast_round
alias fast_round = round
Undocumented in source.
- fast_sin
alias fast_sin = llvm_sin
Undocumented in source.
- fast_sin
alias fast_sin = sin
Undocumented in source.
- fast_sqrt
alias fast_sqrt = llvm_sqrt
Undocumented in source.
- fast_sqrt
alias fast_sqrt = sqrt
Undocumented in source.
- fast_trunc
alias fast_trunc = llvm_trunc
Undocumented in source.
- fast_trunc
alias fast_trunc = trunc
Undocumented in source.
- computeRMS
T computeRMS(T[] samples)
Undocumented in source. Be warned that the author may not have intended to support it.
- convertDecibelToLinearGain
T convertDecibelToLinearGain(T dB)
Converts from dB to linear gain.
Precision: This uses fast_exp which under normal conditions has a peak error under -135dB over the useful range.
- convertFrequencyToMIDINote
float convertFrequencyToMIDINote(float frequency)
Mapping from frequency to MIDI notes.
- convertFrequencyToNormalizedFrequency
float convertFrequencyToNormalizedFrequency(float frequencyHz, float samplingRate)
Computes a normalized frequency form a frequency.
- convertLinearGainToDecibel
T convertLinearGainToDecibel(T x)
Converts from linear gain to dB.
Precision: This uses fast_exp which under normal conditions has a peak error under -135dB over the useful range.
- convertMIDINoteToFrequency
float convertMIDINoteToFrequency(float note)
Mapping from MIDI notes to frequency.
- convertNormalizedFrequencyToFrequency
float convertNormalizedFrequencyToFrequency(float frequencyCyclesPerSample, float samplingRate)
- convertPowerToDecibel
T convertPowerToDecibel(T x)
Converts from power to dB.
Instantaneous power is the squared amplitude of a signal, and can be a
nice domain to work in at times.
Precision: This uses fast_exp which under normal conditions has a peak error under -135dB over the useful range.
- equalLoudnessCurve
T equalLoudnessCurve(T frequency)
Fletcher and Munson equal-loudness curve
Reference: Xavier Serra thesis (1989).
- expDecayFactor
double expDecayFactor(double timeConstantInSeconds, double samplerate)
Gets a factor for making exponential decay curves, which are the same thing
as a 6dB/oct lowpass filter.
- hermite
T hermite(T frac_pos, T xm1, T x0, T x1, T x2)
- iFloorLog2
int iFloorLog2(int i)
- inverseSqrt
T inverseSqrt(T x)
SSE approximation of reciprocal square root.
- isEven
bool isEven(T i)
- isOdd
bool isOdd(T i)
- isPowerOfTwo
bool isPowerOfTwo(int i)
- lerp
S lerp(S a, S b, T t)
Linear interpolation, akin to GLSL's mix.
- linmap
T linmap(T value, T a, T b, T c, T d)
Map linearly x from the range [a, b] to the range [c, d]
- logmap
T logmap(T t, T min, T max)
map [0..1] to min..max logarithmically
min and max must be all > 0, t in [0..1]
Note: you can totally have a max that is smaller than min.
In this cases, the range mapped with more accuracy are still small values.
- nextMultipleOf
size_t nextMultipleOf(size_t n, size_t powerOfTwo)
- nextPow2HigherOrEqual
int nextPow2HigherOrEqual(int i)
long nextPow2HigherOrEqual(long i)
Computes next power of 2.
- normalizePhase
T normalizePhase(T phase)
Give back a phase between -PI and PI
- rawSawtooth
T rawSawtooth(T x)
Quick and dirty sawtooth for testing purposes.
- rawSquare
T rawSquare(T x)
Quick and dirty square for testing purposes.
- rawTriangle
T rawTriangle(T x)
Quick and dirty triangle for testing purposes.
- sinc
T sinc(T x)
- smoothStep
T smoothStep(T a, T b, T t)
DSP utility functions.