## Expand description

General conversion functions and utilities.

## Modules

- Windowing functions, useful in conjunction with
`StftHelper`

.

## Structs

- Process the input buffer in equal sized blocks, running a callback on each block to transform the block and then writing back the results from the previous block to the buffer. This introduces latency equal to the size of the block.

## Constants

## Functions

- Convert decibels to a voltage gain ratio, treating anything below -100 dB as minus infinity.
- An approximation of
`db_to_gain()`

using`exp()`

. Does not treat values below`MINUS_INFINITY_DB`

as 0.0 gain to avoid branching. As a result this function will thus also never return 0.0 for normal input values. Will run faster on most architectures, but the result may be slightly different. `db_to_gain_fast()`

, but this version does truncate values below`MINUS_INFINITY_DB`

to 0.0. Bikeshedding over a better name is welcome.- The same as
`midi_note_to_freq()`

, but for arbitrary note numbers including those outside of the MIDI range. This also supports fractional note numbers, which is useful when working with cents. - The inverse of
`f32_midi_note_to_freq()`

. This returns a fractional note number. Round to a whole number, subtract that from the result, and multiply the fractional part by 100 to get the number of cents. - Convert a voltage gain ratio to decibels. Gain ratios that aren’t positive will be treated as
`MINUS_INFINITY_DB`

. - An approximation of
`gain_to_db()`

using`ln()`

. Will run faster on most architectures, but the result may be slightly different. `db_to_gain_fast()`

, but the minimum gain value is set to`f32::EPSILON`

instead of`MINUS_INFINITY_GAIN`

. Useful in conjunction with`db_to_gain_fast()`

.- Convert a MIDI note ID to a frequency at A4 = 440 Hz equal temperament and middle C = note 60 = C4.
- permit_allocNot (debug-assertions enabled and
`assert_process_allocs`

)Temporarily allow allocations within`func`

if NIH-plug was configured with the`assert_process_allocs`

feature.