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

R

Romain Beauxis <toots@rastageeks.org>

Maintainers

T

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

Sources

v0.7.4.tar.gz

md5=c37d3d7300159c55f7f661afa702350f

sha512=14eae4f480fa6b2f94811059c4811f0b967de32819b6908e0f3c03579f912614cad7351c12eb31c485b25a8dd4e86091853f93890a491a74c91a5b12e98ff28d

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 -> Complex.t array

complex_create buf 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