package mm

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in-package search v0.2.0

The mm library contains high-level APIs to create and manipulate multimedia streams (audio, video, MIDI)

Install

Dune Dependency

github.com Readme Changelog Edit opam file Versions (17)

Authors

S

Samuel Mimram <smimram@gmail.com>

Maintainers

T

The Savonet Team <savonet-users@lists.sourceforge.net>

Sources

v0.8.4.tar.gz

md5=9316f8bce6e8b7a2c83aaab31d3326dc

sha512=489e082866fd7db77248cb7e3a5d0a7e5af6c3390c9b27b317cce9bb3a48f26e6a05d1d55a662a181b5dcbeeec59aded5d0f08bd33c0ee8554655c5cad69a782

doc/mm.audio/Mm_audio/Audio/Mono/Analyze/FFT/index.html

Module `Analyze.FFT`Source

Simple implementation of the FFT algorithm. For fastest implementations optimized libraries such as fftw are recommended.

Sourcetype t

Internal data for computing FFT.

Sourceval init : int -> t

Initialize FFT for an analysis of 2^n samples.

Sourceval length : t -> int

Length of the FFT buffer analysis in samples.

Sourceval complex_create : buffer -> int -> int -> Complex.t array

complex_create buf off len create a array of complex numbers by copying data from buf (the imaginary part is null).

Sourceval fft : t -> Complex.t array -> unit

Perform an FFT analysis.

Sourceval band_freq : int -> t -> int -> float

Frequency associated to the k-th coefficient of an FFT.

Sourcemodule Window : sig ... end

Windowing functions. Thses can be used to on complex buffers in order to improve the quality of the FFT, see http://en.wikipedia.org/wiki/Windowing_functions.

Source

val notes : 
  int ->
  t ->
  ?note_min:int ->
  ?note_max:int ->
  ?volume_min:float ->
  ?filter_harmonics:bool ->
  buffer ->
  (Note.t * float) list

Sourceval loudest_note : (Note.t * float) list -> (Note.t * float) option