求助关于fluctuation strength的计算
需要计算心理声学参数fluctuation strength，不知道什么软件可以计算啊？或者哪位高手有相关的matlab程序可以分享一下的。非常感谢啊！ 同求 同求 下面的函数是否就是你需要的？function varargout = mirfluctuation(orig,varargin)
% f = mirfluctuation(x) calculates the fluctuation strength, indicating the
% rhythmic periodicities along the different channels.
% Optional arguments:
% mirfluctuation(...,'MinRes',mr) specifies the minimal frequency
% resolution of the resulting spectral decomposition, in Hz.
% Default: mr = .01 Hz
% mirfluctuation(...,'Summary') returns the summary of the fluctuation,
% i.e., the summation along the critical bands.
%
% E. Pampalk, A. Rauber, D. Merkl, "Content-based Organization and
% Visualization of Music Archives",
这是MIRtoolbox工具箱中的一个函数，该工具箱介绍如下：
% MIRtoolbox
% Version 1.3.4 (Matlab Central version) 14-December-2011
%
% A more detailed documentation of each function is available using the
% help command. For instance, type help miraudio.
%
% A complete documentation is available in the downloaded folder and online.
% http://www.jyu.fi/music/coe/materials/mirtoolbox
%
%BASIC AUDIO OPERATIONS
% miraudio - Loads and return waveform
% mirframe - Decomposes into successive frames
% mirsegment - Decomposes into successive segments
% mirlength - Temporal length
%
%DATA OUTPUT
% mirgetdata - Return result as a Matlab standard structure
% mirsave - Save audio and other temporal data into audio files
% mirexport - Export the analytical results to a text file
% mirplay - Plays audio and other temporal data
%
%ANALYTICAL OPERATORS
% mirspectrum - FFT spectrum with many post-processing operations
% mirautocor - Autocorrelation function
% mirfilterbank - Decomposes into channels via a bank of filters
% mirsum - Sums the channels of a filterbank
%
%DYNAMIC
% mirrms - Root mean square energy
% mirlowenergy - Number of frames with lower than average energy
% mirenvelope - Amplitude envelope (global shape of the waveform)
% mironsets - Note onset positions and characteristics
% mirattacktime - Duration of note attacks
% mirattackslope - Average slope of note attacks
% mireventdensity- Average frequency of events
%
%RHYTHM
% mirtempo - Tempo (in beats per minute)
% mirfluctuation - Fluctuation strength (periodicities in each channel)
% mirbeatspectrum- Beat spectrum, characterizing the rhythmic content
% mirpulseclarity- Rhythmic clarity, i.e., beat strength
%
%TIMBRE
% mirbrightness - Spectral brightness (high-frequency rate)
% mirrolloff - Spectral rolloff (frequency above which is located a
% certain amount of energy)
% mirmfcc - Mel-frequency cepstrum coefficients
% (numerical description of the spectrum envelope)
% mirinharmonicity - Inharmonicity (partials non-multiple of fundamental)
% mirroughness - Roughness (sensory dissonance)
% mirregularity - Spectrum irregularity (amplitude variability of
% successive peaks)
%
%PITCH
% mirpitch - Pitch frequencies
% mircepstrum - Cepstrum representation (showing periodicities)
% mirmidi - Attempts a conversion of audio into MIDI
%
%TONALITY
% mirchromagram - Chromagram (distribution of energy along pitches)
% mirkeystrength - Key strengths (probability of key candidates)
% mirkey - Best keys and modes (in the 12 tone system)
% mirkeysom - Visualizes key strengths with self-organizing map
% mirmode - General estimation of mode (major/minor)
% mirtonalcentroid - Tonal centroid (using circles of fifths and thirds)
% mirhcdf - Harmonic Change Detection Function
%
%PREDICTIONS
% miremotion - Emotion, represented both as classes and dimensions
%
%ANALYSIS
% mirmean - Returns the mean of any feature
% mirstd - Returns the standard deviation of any feature
% mirstat - Returns statistics of any feature
% mirpeaks - Peaks
% mirhisto - Histogram
% mirentropy - Entropy
% mirzerocross - Sign-changes ratio
% mircentroid - Centroid (center of gravity)
% mirspread - Spread (non-concentration)
% mirskewness - Skewness (lack of symmetry)
% mirkurtosis - Kurtosis (peakiness)
% mirflatness - Flatness
%
%SIMILARITY
% mirflux - Flux, i.e., distance between successive frames
% mirsimatrix - Similarity matrix
% mirnovelty - Novelty score
% mirdist - Distance between audio files
% mirquery - Query by example
%
%OTHER
% mirclassify - Classifies audio sequences
% mircluster - Clusters segments or frames
% mirfeatures - Compute a large range of features
% mirmap - Performs statistical mapping
%
%MATLAB FUNCTIONS generalized to the MIRtoolbox data
% + - Superposes audio files
% * - Combines autocor, cepstrum curves
% corrcoef - Computes correlation between curves
%
%PREFERENCES
% mirchunklim - Get or set the chunk size threshold
% mirwaitbar - Toggles on/off the display of progress bars
% mirverbose - Toggles on/off the display of ongoing operations
% mirparallel - Toggles on/off parallel processing
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