package mm

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in-package search v0.2.0

The mm library contains high-level 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

v0.8.2.tar.gz

md5=409c77363e3b351239cbf54190c8582a

sha512=ada58637e258c9af2618596cbfca591cbb9d46ea566f16b99909156f033cbec54cc1633bc71ae5ac1481aab1b4b8037f18060af604481bd8b52be52d80b7ca47

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