package mm

  1. Overview
  2. Docs
package mm
Legend:
Library
Module
Module type
Parameter
Class
Class type

Operations on audio data.

val samples_of_seconds : int -> float -> int

At given sample rate, number of samples in given amount of time.

val seconds_of_samples : int -> int -> float

At given sample rate, duration of given number of samples.

val lin_of_dB : float -> float

Convert decibels to linear coefficient.

val dB_of_lin : float -> float

Convert linear coefficient to decibels.

module Sample : sig ... end

Operations on samples.

module Note : sig ... end

Operations on notes.

module Mono : sig ... end

Operations on mono buffers (with only one channel).

type t = float array array

An audio buffer.

type buffer = t
val create : int -> int -> t

create chans len creates a buffer with chans channels and len samples as duration.

val make : int -> int -> float -> t
val length : t -> int

Length in samples.

val create_same : t -> t

Create a buffer with the same number of channels and duration as the given buffer.

val clear : t -> int -> int -> unit

Clear the buffer (sets all the samples to zero).

val copy : t -> int -> int -> t

Copy the given buffer.

val append : t -> int -> int -> t -> int -> int -> t
val channels : t -> int
val to_mono : t -> int -> int -> Mono.t

Convert a buffer to a mono buffer by computing the mean of all channels.

val of_mono : Mono.t -> t

Convert a mono buffer into a buffer. Notice that the original mono buffer is not copied an might thus be modified afterwards.

val interleave : t -> int -> int -> Mono.t
val deinterleave : int -> Mono.t -> int -> int -> t
module U8 : sig ... end
module S16LE : sig ... end
module S16BE : sig ... end
module S24LE : sig ... end
module S32LE : sig ... end
val resample : ?mode:[ `Nearest | `Linear ] -> float -> t -> int -> int -> t
val blit : t -> int -> t -> int -> int -> unit
val sub : t -> int -> int -> t
val clip : t -> int -> int -> unit
val noise : t -> int -> int -> unit
val squares : t -> int -> int -> float
val copy_to_ba : t -> int -> int -> (float, Bigarray.float32_elt, Bigarray.c_layout) Bigarray.Array1.t array -> unit
val copy_from_ba : (float, Bigarray.float32_elt, Bigarray.c_layout) Bigarray.Array1.t array -> t -> int -> int -> unit
val to_ba : t -> int -> int -> (float, Bigarray.float32_elt, Bigarray.c_layout) Bigarray.Array1.t array
val copy_to_int16_ba : t -> int -> int -> (int, Bigarray.int16_signed_elt, Bigarray.c_layout) Bigarray.Array1.t array -> unit
val copy_from_int16_ba : (int, Bigarray.int16_signed_elt, Bigarray.c_layout) Bigarray.Array1.t array -> t -> int -> int -> unit
val to_int16_ba : t -> int -> int -> (int, Bigarray.int16_signed_elt, Bigarray.c_layout) Bigarray.Array1.t array
val amplify : float -> t -> int -> int -> unit

Amplify a portion of the buffer by a given coefficient.

val pan : float -> t -> int -> int -> unit

Pan a stereo buffer from left to right (the buffer should have exactly two channels!). The coefficient should be between -1. and 1..

val add : t -> int -> t -> int -> int -> unit

Add two buffers of the same length, storing the result in the first one.

val add_coeff : t -> int -> float -> t -> int -> int -> unit

Add to the first buffer, the second buffer multiplied by a coefficient.

module Buffer_ext : sig ... end

Buffers of variable size. These are particularly useful for temporary buffers.

module Ringbuffer : sig ... end

Circular ringbuffers.

module Ringbuffer_ext : sig ... end

Extensible ringbuffers.

module Analyze : sig ... end
module Effect : sig ... end

Audio effects.

module Generator : sig ... end

Sound generators.

module IO : sig ... end

Operation for reading and writing audio data from files, streams or devices.

OCaml

Innovation. Community. Security.

GitHub Discord Twitter Peertube RSS
About
Changelog Releases Industrial Users Academic Users Why OCaml
Ecosystem
Packages Community Events OCaml Planet Jobs
Resources
Install OCaml Get Started Platform Tools Language Manual Standard Library API Books Exercises Papers OCaml Playground Logo
Policies
Carbon Footprint Governance Privacy Code of Conduct