Delays

Structs

struct Delay¶

A variable delay line with interpolation.

Traits: AnyType, Copyable, Movable, Representable, UnknownDestructibility

Delay Parameters

Name	Type	Default	Description
num_chans	`Int`	`1`	Size of the SIMD vector - defaults to 1.
interp	`Int`	`1`	The interpolation method to use. See the struct Interp for interpolation options.

Delay Functions¶

`struct` Delay . `fn` init¶

Initialize the Delay line.

fn init Signature

__init__(out self, world: UnsafePointer[MMMWorld], max_delay_time: Float64 = 1)

fn init Arguments

Name	Type	Default	Description
world	`UnsafePointer`	—	A pointer to the MMMWorld.
max_delay_time	`Float64`	`1`	The maximum delay time in seconds. The internal buffer will be allocated to accommodate this delay.

fn init Returns : Self

Static Method

This is a static method.

`struct` Delay . `fn` read¶

Reads into the delay line.

fn read Signature

read(mut self, var delay_time: SIMD[DType.float64, num_chans]) -> SIMD[DType.float64, num_chans]

fn read Arguments

Name	Type	Default	Description
delay_time	`SIMD`	—	The amount of delay to apply (in seconds).

fn read Returns : SIMD A single sample read from the delay buffer.

`struct` Delay . `fn` write¶

Writes a single sampleinto the delay line.

fn write Signature

write(mut self, input: SIMD[DType.float64, num_chans])

fn write Arguments

Name	Type	Default	Description
input	`SIMD`	—	—

`struct` Delay . `fn` next¶

Process one sample through the delay line, first reading from the delay then writing into it.

fn next Signature

next(mut self, input: SIMD[DType.float64, num_chans], var delay_time: SIMD[DType.float64, num_chans]) -> SIMD[DType.float64, num_chans]

fn next Arguments

Name	Type	Default	Description
input	`SIMD`	—	The input sample to process.
delay_time	`SIMD`	—	The amount of delay to apply (in seconds).

fn next Returns : SIMD The processed output sample.

`struct` Delay . `fn` get_f_idx¶

Calculate the fractional index in the delay buffer for the given delay time.

fn get_f_idx Signature

get_f_idx(self, delay_time: Float64) -> Float64

fn get_f_idx Arguments

Name	Type	Default	Description
delay_time	`Float64`	—	The delay time in seconds.

fn get_f_idx Returns : Float64 The fractional index in the delay buffer.

struct Comb¶

A simple comb filter using a delay line with feedback.

Traits: AnyType, Copyable, Movable, UnknownDestructibility

Comb Parameters

Name	Type	Default	Description
num_chans	`Int`	`1`	Size of the SIMD vector.
interp	`Int`	`2`	The interpolation method to use. See the struct Interp for interpolation options.

Comb Functions¶

`struct` Comb . `fn` init¶

Initialize the Comb filter.

fn init Signature

__init__(out self, world: UnsafePointer[MMMWorld], max_delay: Float64 = 1)

fn init Arguments

Name	Type	Default	Description
world	`UnsafePointer`	—	A pointer to the MMMWorld.
max_delay	`Float64`	`1`	The maximum delay time in seconds. The internal buffer will be allocated to accommodate this delay.

fn init Returns : Self

Static Method

This is a static method.

`struct` Comb . `fn` next¶

Process one sample through the comb filter.

fn next Signature

next(mut self, input: SIMD[DType.float64, num_chans], delay_time: SIMD[DType.float64, num_chans] = 0, feedback: SIMD[DType.float64, num_chans] = 0) -> SIMD[DType.float64, num_chans]

fn next Arguments

Name	Type	Default	Description
input	`SIMD`	—	The input sample to process.
delay_time	`SIMD`	`0`	The amount of delay to apply (in seconds).
feedback	`SIMD`	`0`	The amount of feedback to apply (-1.0 to 1.0).

fn next Returns : SIMD The delayed output sample.

`struct` Comb . `fn` next_decaytime¶

Process one sample through the comb filter with decay time calculation.

fn next_decaytime Signature

next_decaytime(mut self, input: SIMD[DType.float64, num_chans], delay_time: SIMD[DType.float64, num_chans], decay_time: SIMD[DType.float64, num_chans]) -> SIMD[DType.float64, num_chans]

fn next_decaytime Arguments

Name	Type	Default	Description
input	`SIMD`	—	The input sample to process.
delay_time	`SIMD`	—	The amount of delay to apply (in seconds).
decay_time	`SIMD`	—	The desired decay time (time to -60dB). Feedback is calculated internally.

fn next_decaytime Returns : SIMD The delayed output sample.

struct LP_Comb¶

A simple comb filter with an integrated one-pole low-pass filter.

Traits: AnyType, Copyable, Movable, UnknownDestructibility

LP_Comb Parameters

Name	Type	Default	Description
num_chans	`Int`	`1`	Size of the SIMD vector - defaults to 1.
interp	`Int`	`1`	The interpolation method to use. See the struct Interp for interpolation options.

LP_Comb Functions¶

`struct` LP_Comb . `fn` init¶

Initialize the LP_Comb filter.

fn init Signature

__init__(out self, world: UnsafePointer[MMMWorld], max_delay: Float64 = 1)

fn init Arguments

Name	Type	Default	Description
world	`UnsafePointer`	—	A pointer to the MMMWorld.
max_delay	`Float64`	`1`	The maximum delay time in seconds. The internal buffer will be allocated to accommodate this delay.

fn init Returns : Self

Static Method

This is a static method.

`struct` LP_Comb . `fn` next¶

Process one sample through the comb filter.

fn next Signature

next(mut self, input: SIMD[DType.float64, num_chans], delay_time: SIMD[DType.float64, num_chans] = 0, feedback: SIMD[DType.float64, num_chans] = 0, lp_freq: SIMD[DType.float64, num_chans] = 0) -> SIMD[DType.float64, num_chans]

fn next Arguments

Name	Type	Default	Description
input	`SIMD`	—	The input sample to process.
delay_time	`SIMD`	`0`	The amount of delay to apply (in seconds).
feedback	`SIMD`	`0`	The amount of feedback to apply (-1.0 to 1.0).
lp_freq	`SIMD`	`0`	The cutoff frequency of the OnePole filter in the feedback loop.

fn next Returns : SIMD The processed output sample.

struct Allpass_Comb¶

A simple allpass comb filter using a delay line with feedback.

Traits: AnyType, Copyable, Movable, UnknownDestructibility

Allpass_Comb Parameters

Name	Type	Default	Description
num_chans	`Int`	`1`	Size of the SIMD vector.
interp	`Int`	`1`	The interpolation method to use. See the struct Interp for interpolation options.

Allpass_Comb Functions¶

`struct` Allpass_Comb . `fn` init¶

Initialize the Allpass Comb filter.

fn init Signature

__init__(out self, world: UnsafePointer[MMMWorld], max_delay: Float64 = 1)

fn init Arguments

Name	Type	Default	Description
world	`UnsafePointer`	—	A pointer to the MMMWorld.
max_delay	`Float64`	`1`	The maximum delay time in seconds. The internal buffer will be allocated to accommodate this delay.

fn init Returns : Self

Static Method

This is a static method.

`struct` Allpass_Comb . `fn` next¶

Process one sample through the allpass comb filter.

fn next Signature

next(mut self, input: SIMD[DType.float64, num_chans], delay_time: SIMD[DType.float64, num_chans] = 0, feedback_coef: SIMD[DType.float64, num_chans] = 0) -> SIMD[DType.float64, num_chans]

fn next Arguments

Name	Type	Default	Description
input	`SIMD`	—	The input sample to process.
delay_time	`SIMD`	`0`	The amount of delay to apply (in seconds).
feedback_coef	`SIMD`	`0`	The feedback coefficient (-1.0 to 1.0).

fn next Returns : SIMD The delayed/filtered output sample.

`struct` Allpass_Comb . `fn` next_decaytime¶

Process one sample through the allpass comb filter with decay time calculation.

fn next_decaytime Signature

next_decaytime(mut self, input: SIMD[DType.float64, num_chans], delay_time: SIMD[DType.float64, num_chans], decay_time: SIMD[DType.float64, num_chans]) -> SIMD[DType.float64, num_chans]

fn next_decaytime Arguments

Name	Type	Default	Description
input	`SIMD`	—	The input sample to process.
delay_time	`SIMD`	—	The amount of delay to apply (in seconds).
decay_time	`SIMD`	—	The desired decay time (time to -60dB).

fn next_decaytime Returns : SIMD

struct FB_Delay¶

A feedback delay structured like a Comb filter, but with possible feedback coefficient above 1 due to an integrated tanh function.

By default, Anti-aliasing is disabled and no oversampling is applied, but this can be changed by setting the ADAA_dist and os_index template parameters.

Traits: AnyType, Copyable, Movable, Representable, UnknownDestructibility

FB_Delay Parameters

Name	Type	Default	Description
num_chans	`Int`	`1`	Size of the SIMD vector.
interp	`Int`	`4`	The interpolation method to use. See the struct Interp for interpolation options.
ADAA_dist	`Bool`	`False`	Whether to apply ADAA distortion to the feedback signal instead of standard tanh.
os_index	`Int`	`0`	The oversampling index for ADAA distortion. 0 = no oversampling, 1 = 2x, 2 = 4x, 3 = 8x, 4 = 16x.

FB_Delay Functions¶

`struct` FB_Delay . `fn` init¶

Initialize the FB_Delay.

fn init Signature

__init__(out self, world: UnsafePointer[MMMWorld], max_delay: Float64 = 1)

fn init Arguments

Name	Type	Default	Description
world	`UnsafePointer`	—	A pointer to the MMMWorld.
max_delay	`Float64`	`1`	The maximum delay time in seconds. The internal buffer will be allocated to accommodate this delay.

fn init Returns : Self

Static Method

This is a static method.

`struct` FB_Delay . `fn` next¶

Process one sample or SIMD vector through the feedback delay.

fn next Signature

next(mut self, input: SIMD[DType.float64, num_chans], delay_time: SIMD[DType.float64, num_chans], feedback: SIMD[DType.float64, num_chans]) -> SIMD[DType.float64, num_chans]

fn next Arguments

Name	Type	Default	Description
input	`SIMD`	—	The input sample to process.
delay_time	`SIMD`	—	The amount of delay to apply (in seconds).
feedback	`SIMD`	—	The amount of feedback to apply (0.0 to 1.0).

fn next Returns : SIMD The processed output sample or SIMD vector.

Functions

(Functions that are not associated with a Struct)

`fn` calc_feedback¶

Calculate the feedback coefficient for a Comb filter or Allpass line based on desired delay time and decay time.

Signature

calc_feedback[num_chans: Int = 1](delaytime: SIMD[DType.float64, num_chans], decaytime: SIMD[DType.float64, num_chans]) -> SIMD[DType.float64, num_chans]

Parameters

Name	Type	Description
num_chans	`Int`	Size of the SIMD vector - defaults to 1.

Arguments

Name	Type	Default	Description
delaytime	`SIMD`	—	The delay time in seconds.
decaytime	`SIMD`	—	The decay time in seconds (time to -60dB).

Returns

Type: SIMD

Documentation generated with mojo doc from Mojo version 0.25.6.1

Delays

struct Delay¶

Delay Functions¶

struct Delay . fn init¶

struct Delay . fn read¶

struct Delay . fn write¶

struct Delay . fn next¶

struct Delay . fn get_f_idx¶

struct Comb¶

Comb Functions¶

struct Comb . fn init¶

struct Comb . fn next¶

struct Comb . fn next_decaytime¶

struct LP_Comb¶

LP_Comb Functions¶

struct LP_Comb . fn init¶

struct LP_Comb . fn next¶

struct Allpass_Comb¶

Allpass_Comb Functions¶

struct Allpass_Comb . fn init¶

struct Allpass_Comb . fn next¶

struct Allpass_Comb . fn next_decaytime¶

struct FB_Delay¶

FB_Delay Functions¶

struct FB_Delay . fn init¶

struct FB_Delay . fn next¶

fn calc_feedback¶

`struct` Delay . `fn` init¶

`struct` Delay . `fn` read¶

`struct` Delay . `fn` write¶

`struct` Delay . `fn` next¶

`struct` Delay . `fn` get_f_idx¶

`struct` Comb . `fn` init¶

`struct` Comb . `fn` next¶

`struct` Comb . `fn` next_decaytime¶

`struct` LP_Comb . `fn` init¶

`struct` LP_Comb . `fn` next¶

`struct` Allpass_Comb . `fn` init¶

`struct` Allpass_Comb . `fn` next¶

`struct` Allpass_Comb . `fn` next_decaytime¶

`struct` FB_Delay . `fn` init¶

`struct` FB_Delay . `fn` next¶

`fn` calc_feedback¶