Module fundsp::hacker32

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The 32-bit hacker prelude, a 32-bit environment for audio processing.

Re-exports§

Functions§

  • add
    Add constant to signal.
  • adsr_live
    ADSR envelope.
  • allnest
    A nested allpass. The feedforward coefficient of the outer allpass is set from the second input, which should have an absolute value smaller than one to prevent a blowup. The delay element of the outer allpass is replaced with x. The result is an allpass filter if x is allpass. If x is pass() then the result is a 1st order allpass. If x is a delay element then the result is a Schroeder allpass. If x is a 1st order allpass (allpole) then the result is a 2nd order nested allpass.
  • allnest_c
    A nested allpass. The feedforward coefficient of the outer allpass is set from coefficient, which should have an absolute value smaller than one to prevent a blowup. The delay element of the outer allpass is replaced with x. The result is an allpass filter if x is allpass. If x is pass() then the result is a 1st order allpass. If x is a delay element then the result is a Schroeder allpass. If x is a 1st order allpass (allpole) then the result is a 2nd order nested allpass.
  • allpass
    Allpass filter.
  • allpass_hz
    Allpass filter centered at f Hz with Q value q.
  • allpass_q
    Allpass filter with Q value q.
  • allpole
    Allpass filter (1st order) with adjustable delay (delay > 0) in samples at DC.
  • allpole_delay
    Allpass filter (1st order) with delay (delay > 0) in samples at DC.
  • bandpass
    Bandpass filter.
  • bandpass_hz
    Bandpass filter centered at f Hz with Q value q.
  • bandpass_q
    Bandpass filter with Q value q.
  • bandrez
    Resonant two-pole bandpass filter.
  • bandrez_hz
    Resonant two-pole bandpass filter with fixed center frequency and Q.
  • bandrez_q
    Resonant two-pole bandpass filter with fixed Q.
  • bell
    Bell filter with adjustable gain.
  • bell_hz
    Bell filter centered at f Hz with Q value q and amplitude gain gain.
  • bell_q
    Bell filter with Q value q and amplitude gain gain.
  • biquad
    An arbitrary biquad filter with coefficients in normalized form.
  • branch
    Branch into N similar nodes from indexed generator f.
  • branchf
    Branch into N similar nodes from fractional generator f. The fractional generator is given values in the range 0…1.
  • brown
    Brown noise.
  • bus
    Bus N similar nodes from indexed generator f.
  • busf
    Bus N similar nodes from fractional generator f. The fractional generator is given values in the range 0…1.
  • butterpass
    Butterworth lowpass filter (2nd order).
  • butterpass_hz
    Butterworth lowpass filter (2nd order) with fixed cutoff frequency f Hz.
  • chorus
    Mono chorus, 5 voices. For stereo, stack two of these using different seed values. seed: LFO seed. separation: base voice separation in seconds (for example, 0.015). variation: delay variation in seconds (for example, 0.005). mod_frequency: delay modulation frequency (for example, 0.2).
  • clip
    Clip signal to -1…1.
  • clip_to
    Clip signal to minimum…maximum.
  • constant
    Constant node. Synonymous with dc.
  • dc
    Constant node. Synonymous with constant. (DC stands for “direct current”, which is an electrical engineering term used with signals.)
  • dcblock
    Keeps a signal zero centered. The cutoff of the filter is 10 Hz.
  • dcblock_hz
    Keeps a signal zero centered. Filter cutoff (in Hz) is usually somewhere below the audible range. The default blocker cutoff is 10 Hz.
  • declick
    Apply 10 ms of fade-in to signal at time zero.
  • declick_s
    Apply t seconds of fade-in to signal at time zero.
  • delay
    Fixed delay of t seconds. Delay time is rounded to the nearest sample. The minimum delay is one sample.
  • dsf_saw
    Saw-like discrete summation formula oscillator.
  • dsf_saw_r
    Saw-like discrete summation formula oscillator. Roughness in 0…1 is the attenuation of successive partials.
  • dsf_square
    Square-like discrete summation formula oscillator.
  • dsf_square_r
    Square-like discrete summation formula oscillator. Roughness in 0…1 is the attenuation of successive partials.
  • envelope
    Control envelope from time-varying function f(t) with t in seconds. Spaces samples using pseudorandom jittering. Synonymous with lfo.
  • envelope2
    Control envelope from time-varying, input dependent function f(t, x) with t in seconds. Spaces samples using pseudorandom jittering. Synonymous with lfo2.
  • envelope3
    Control envelope from time-varying, input dependent function f(t, x, y) with t in seconds. Spaces samples using pseudorandom jittering. Synonymous with lfo3.
  • envelope_in
    Control envelope from time-varying, input dependent function f(t, i) with t in seconds and i of type &Frame<f32, I> where I is the number of input channels. Spaces samples using pseudorandom jittering. Synonymous with lfo_in.
  • fdn
    Feedback delay network. Mix output of enclosed circuit x back to its input. The output is diffused with a Hadamard matrix for feedback. Feedback circuit x must have an equal number of inputs and outputs. The number of inputs and outputs must be a power of two.
  • fdn2
    Feedback delay network. Mix output of enclosed circuit x back to its input, using y for extra feedback processing. The feedforward path does not include y. After y, the feedback signal is diffused with a Hadamard matrix. Feedback circuits x and y must have an equal number of inputs and outputs.
  • feedback
    Mix output of enclosed circuit node back to its input. Feedback circuit node must have an equal number of inputs and outputs.
  • feedback2
    Mix output of enclosed circuit node back to its input with extra loopback feedback loop processing. Feedback circuits node and loopback must have an equal number of inputs and outputs.
  • fir
    FIR filter.
  • fir3
    Create a 3-point symmetric FIR from desired gain (gain >= 0) at the Nyquist frequency. Results in a monotonic low-pass filter when gain < 1.
  • flanger
    Mono flanger. feedback_amount: amount of feedback (for example, 0.9 or -0.9). Negative feedback inverts feedback phase. minimum_delay: minimum delay in seconds (for example, 0.005). maximum_delay: maximum delay in seconds (for example, 0.015). ´delay_f´: Delay in minimum_delay…maximum_delay as a function of time. For example, |t| lerp11(0.005, 0.015, sin_hz(0.1, t)).
  • follow
    Parameter follower filter with halfway response time t seconds.
  • hammond
    Hammond wavetable oscillator. Emphasizes first three partials.
  • hammond_hz
    Fixed Hammond wavetable oscillator at f Hz. Emphasizes first three partials.
  • highpass
    Highpass filter.
  • highpass_hz
    Highpass filter with cutoff frequency f Hz with Q value q.
  • highpass_q
    Highpass filter with Q value q.
  • highpole
    One-pole, one-zero highpass filter (1st order).
  • highpole_hz
    One-pole, one-zero highpass filter (1st order) with fixed cutoff frequency f.
  • highshelf
    High shelf filter with adjustable gain.
  • highshelf_hz
    High shelf filter centered at f Hz with Q value q and amplitude gain gain.
  • highshelf_q
    High shelf filter with Q value q and amplitude gain gain.
  • hold
    Sample-and-hold component. Sampling frequency variability is in 0…1.
  • hold_hz
    Sample-and-hold component. Sampling frequency variability is in 0…1.
  • impulse
    N-channel impulse. The first sample on each channel is one and the rest are zero.
  • join
    Average N channels into one. Inverse of split.
  • lfo
    Control envelope from time-varying function f(t) with t in seconds. Spaces samples using pseudorandom jittering. Synonymous with envelope.
  • lfo2
    Control envelope from time-varying, input dependent function f(t, x) with t in seconds. Spaces samples using pseudorandom jittering. Synonymous with envelope2.
  • lfo3
    Control envelope from time-varying, input dependent function f(t, x, y) with t in seconds. Spaces samples using pseudorandom jittering. Synonymous with envelope3.
  • lfo_in
    Control envelope from time-varying, input dependent function f(t, i) with t in seconds and i of type &Frame<f32, I> where I is the number of input channels. Spaces samples using pseudorandom jittering. Synonymous with envelope_in.
  • limiter
    Look-ahead limiter with (attack, release) times in seconds. Look-ahead is equal to the attack time.
  • limiter_stereo
    Stereo look-ahead limiter with (attack, release) times in seconds. Look-ahead is equal to the attack time.
  • lorenz
    Lorenz dynamical system oscillator.
  • lowpass
    Lowpass filter.
  • lowpass_hz
    Lowpass filter with cutoff frequency f Hz with Q value q.
  • lowpass_q
    Lowpass filter with Q value q.
  • lowpole
    One-pole lowpass filter (1st order).
  • lowpole_hz
    One-pole lowpass filter (1st order) with fixed cutoff frequency f Hz.
  • lowrez
    Resonant two-pole lowpass filter.
  • lowrez_hz
    Resonant two-pole lowpass filter with fixed cutoff frequency and Q.
  • lowrez_q
    Resonant two-pole lowpass filter with fixed Q.
  • lowshelf
    Low shelf filter with adjustable gain.
  • lowshelf_hz
    Low shelf filter centered at f Hz with Q value q and amplitude gain gain.
  • lowshelf_q
    Low shelf filter with Q value q and amplitude gain gain.
  • map
    Transform channels freely. Accounted as non-linear processing for signal flow.
  • meter
    Meter node. Outputs a summary of the input according to the chosen metering mode.
  • mls
    Default Maximum Length Sequence noise generator.
  • mls_bits
    Maximum Length Sequence noise generator from an n-bit sequence (1 <= n <= 31).
  • monitor
    Monitor node. Passes through input. Communicates via the shared variable an aspect of the input signal according to the chosen metering mode.
  • moog
    Moog resonant lowpass filter.
  • moog_hz
    Moog resonant lowpass filter with fixed cutoff frequency and Q.
  • moog_q
    Moog resonant lowpass filter with fixed Q.
  • morph
    Morphing filter that morphs between lowpass, peak and highpass modes.
  • morph_hz
    Morphing filter with center frequency f, Q value q, and morph morph (-1 = lowpass, 0 = peaking, 1 = highpass).
  • mul
    Multiply signal with constant.
  • multijoin
    Average N branches of M channels into one branch with M channels. The input has N * M channels. Inverse of multisplit::<M, N>.
  • multipass
    Multichannel pass-through.
  • multisink
    Multichannel sink. Inputs are discarded. -Input(s): signal
  • multisplit
    Split M channels into N branches. The output has N * M channels.
  • multitap
    Tapped delay line with cubic interpolation. The number of taps is N. Minimum and maximum delay times are in seconds.
  • multitap_linear
    Tapped delay line with linear interpolation. The number of taps is N. Minimum and maximum delay times are in seconds.
  • multitick
    Multichannel single sample delay.
  • multizero
    Multichannel zero generator.
  • node32
    Convert an AudioUnit into an AudioNode. The number of input channels (I) and output channels (O) must be specified and must match the provided AudioUnit.
  • noise
    White noise generator. Synonymous with white.
  • notch
    Notch filter.
  • notch_hz
    Notch filter centered at f Hz with Q value q.
  • notch_q
    Notch filter with Q value q.
  • organ
    Organ wavetable oscillator. Emphasizes octave partials.
  • organ_hz
    Fixed organ wavetable oscillator at f Hz. Emphasizes octave partials.
  • oversample
    2x oversample enclosed node.
  • pan
    Fixed equal power mono-to-stereo panner with pan value in -1…1 (left to right).
  • panner
    Equal power mono-to-stereo panner.
  • pass
    Mono pass-through.
  • peak
    Peaking filter.
  • peak_hz
    Peaking filter centered at f Hz with Q value q.
  • peak_q
    Peaking filter with Q value q.
  • phaser
    Mono phaser. For stereo, stack two of these with different initial phases. feedback_amount: amount of feedback (for example, 0.5). Negative feedback inverts feedback phase. phase_f: allpass modulation value in 0…1 as function of time, for example |t| sin_hz(0.1, t) * 0.5 + 0.5.
  • pink
    Pink noise.
  • pinkpass
    Pinking filter.
  • pipe
    Chain together N similar nodes from indexed generator f.
  • pipef
    Chain together N similar nodes from fractional generator f. The fractional generator is given values in the range 0…1.
  • pluck
    Karplus-Strong plucked string oscillator with frequency in Hz. High frequency damping is in 0…1.
  • pulse
    Pulse wave oscillator.
  • resample
    Resample enclosed generator node using cubic interpolation at speed obtained from input 0, where 1 is the original speed. Input 0: Sampling speed. Output(s): Resampled outputs of contained generator.
  • resonator
    Constant-gain bandpass resonator.
  • resonator_hz
    Constant-gain bandpass resonator with fixed center frequency (Hz) and bandwidth (Hz).
  • resynth
    Frequency domain resynthesizer. The number of inputs is I and the number of outputs is O. The window length (in samples) must be a power of two and at least four. The resynthesizer processes windows of input samples transformed into the frequency domain. The user supplied processing function processes frequency domain inputs into frequency domain outputs. The outputs are inverse transformed and overlap-added. The latency in samples is equal to window length. If any output is a copy of an input, then the input will be reconstructed exactly once all windows are overlapping, which takes window_length extra samples.
  • reverb2_stereo
    Create a stereo reverb unit. Parameters are room size (in meters, between 10 and 30 meters), reverberation time (in seconds, to -60 dB), diffusion amount (in 0…1), modulation speed (nominal range from 0 to 1, values beyond 1 are permitted and will start to create audible Doppler effects), and a user configurable loop filter. The loop filter is applied repeatedly to the reverb tail and can be used to implement frequency dependent filtering and other effects. More sophisticated (and expensive) than reverb_stereo.
  • reverb3_stereo
    Allpass loop based stereo reverb. Parameters are reverbation time (in seconds to -60 dB), diffusion amount (in 0…1), and a user configurable loop filter. The loop filter is applied repeatedly to the reverb tail and can be used to implement frequency dependent filtering and other effects.
  • reverb4_stereo_delays
    Create a stereo reverb unit, given delay times (in seconds) for the 32 delay lines and reverberation time (in seconds). WIP.
  • reverb_stereo
    Stereo reverb. room_size is in meters. An average room size is 10 meters. time is approximate reverberation time to -60 dB in seconds. damping is high frequency damping in 0…1.
  • reverse
    Reverse channel order.
  • rossler
    Rossler dynamical system oscillator.
  • rotate
    Rotate stereo signal angle radians and apply amplitude gain. Rotations can be useful for mixing because they maintain the L2 norm of the signal.
  • saw
    Saw wavetable oscillator.
  • saw_hz
    Fixed saw wavetable oscillator at f Hz.
  • shape
    Shape signal according to shaping mode.
  • shape_fn
    Shape signal with a waveshaper function.
  • shared
    Shared float variable. Can be read from and written to from multiple threads.
  • sine
    Sine oscillator.
  • sine_hz
    Fixed sine oscillator at f Hz.
  • sink
    Mono sink. Input is discarded. -Input 0: signal
  • snoop
    Snoop node for sharing audio data with a frontend thread. The latest samples buffer has room for at least capacity samples. Returns (frontend, backend).
  • soft_saw
    Soft saw wavetable oscillator. Contains all partials, falls off like a triangle wave.
  • soft_saw_hz
    Fixed soft saw wavetable oscillator at f Hz. Contains all partials, falls off like a triangle wave.
  • split
    Split signal into N channels.
  • square
    Square wavetable oscillator.
  • square_hz
    Fixed square wavetable oscillator at f Hz.
  • stack
    Stack N similar nodes from indexed generator f.
  • stackf
    Stack N similar nodes from fractional generator f. The fractional generator is given values in the range 0…1.
  • sub
    Subtract constant from signal.
  • sum
    Mix together N similar nodes from indexed generator f.
  • sumf
    Mix together N similar nodes from fractional generator f. The fractional generator is given values in the range 0…1.
  • tap
    Tapped delay line with cubic interpolation. Minimum and maximum delay times are in seconds.
  • tap_linear
    Tapped delay line with linear interpolation. Minimum and maximum delay times are in seconds.
  • tick
    Single sample delay.
  • timer
    Timer node. A node with no inputs or outputs that maintains current stream time in a shared variable. It can be added to any node by stacking.
  • triangle
    Triangle wavetable oscillator.
  • triangle_hz
    Fixed triangle wavetable oscillator at f Hz.
  • update
    Update enclosed node x with approximately dt seconds between updates. The update function is f(t, dt, x) where t is current time, dt is time from previous update, and x is the enclosed node.
  • var
    Outputs the value of the shared variable.
  • var_fn
    Shared variable mapped through a function. Outputs the value of the function, which may be scalar or tuple.
  • wave32
    Play back a channel of a Wave32. Optional loop point is the index to jump to at the end of the wave.
  • wave32_at
    Play back a channel of a Wave32 starting from sample start_point, inclusive, and ending at sample end_point, exclusive. Optional loop point is the index to jump to at the end.
  • wave64
    Play back a channel of a Wave64. Optional loop point is the index to jump to at the end of the wave.
  • wave64_at
    Play back a channel of a Wave64 starting from sample start_point, inclusive, and ending at sample end_point, exclusive. Optional loop point is the index to jump to at the end point.
  • white
    White noise generator. Synonymous with noise.
  • zero
    Zero generator.

Type Aliases§