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

v0.8.1.tar.gz

md5=34564f61473e235e81330a53f3dbf869

sha512=de153182cd51a52e55e7df6bf4abf46a19d7ebfc81dc13c6715a7f6321f77b8b321ee80343db9e84fdf7d0ea08d31c16fe0f646ad770937e884da7500a8e65e5

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