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1 % MIRtoolbox
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2 % Version 1.3.2 19-January-2011
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3 %
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4 % A more detailed documentation of each function is available using the
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5 % help command. For instance, type help miraudio.
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6 %
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7 % A complete documentation is available in the downloaded folder and online.
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8 % http://www.jyu.fi/music/coe/materials/mirtoolbox
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9 %
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10 %BASIC AUDIO OPERATIONS
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11 % miraudio - Loads and return waveform
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12 % mirframe - Decomposes into successive frames
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13 % mirsegment - Decomposes into successive segments
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14 % mirlength - Temporal length
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15 %
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16 %DATA OUTPUT
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17 % mirgetdata - Return result as a Matlab standard structure
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18 % mirsave - Save audio and other temporal data into audio files
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19 % mirexport - Export the analytical results to a text file
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20 % mirplay - Plays audio and other temporal data
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21 %
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22 %ANALYTICAL OPERATORS
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23 % mirspectrum - FFT spectrum with many post-processing operations
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24 % mirautocor - Autocorrelation function
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25 % mirfilterbank - Decomposes into channels via a bank of filters
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26 % mirsum - Sums the channels of a filterbank
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27 %
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28 %DYNAMIC
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29 % mirrms - Root mean square energy
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30 % mirlowenergy - Number of frames with lower than average energy
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31 % mirenvelope - Amplitude envelope (global shape of the waveform)
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32 % mironsets - Note onset positions and characteristics
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33 % mirattacktime - Duration of note attacks
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34 % mirattackslope - Average slope of note attacks
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35 % mireventdensity - Average frequency of events
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36 %
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37 %RHYTHM
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38 % mirtempo - Tempo (in beats per minute)
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39 % mirfluctuation - Fluctuation strength (periodicities in each channel)
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40 % mirbeatspectrum - Beat spectrum, characterizing the rhythmic content
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41 % mirpulseclarity - Rhythmic clarity, i.e., beat strength
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42 %
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43 %TIMBRE
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44 % mirbrightness - Spectral brightness (high-frequency rate)
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45 % mirrolloff - Spectral rolloff (frequency above which is located a
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46 % certain amount of energy)
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47 % mirmfcc - Mel-frequency cepstrum coefficients
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48 % (numerical description of the spectrum envelope)
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49 % mirinharmonicity - Inharmonicity (partials non-multiple of fundamental)
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50 % mirroughness - Roughness (sensory dissonance)
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51 % mirregularity - Spectrum irregularity (amplitude variability of
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52 % successive peaks)
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53 %
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54 %PITCH
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55 % mirpitch - Pitch frequencies
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56 % mircepstrum - Cepstrum representation (showing periodicities)
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57 % mirmidi - Attempts a conversion of audio into MIDI
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58 %
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59 %TONALITY
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60 % mirchromagram - Chromagram (distribution of energy along pitches)
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61 % mirkeystrength - Key strengths (probability of key candidates)
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62 % mirkey - Best keys and modes (in the 12 tone system)
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63 % mirkeysom - Visualizes key strengths with self-organizing map
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64 % mirmode - General estimation of mode (major/minor)
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65 % mirtonalcentroid - Tonal centroid (using circles of fifths and thirds)
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66 % mirhcdf - Harmonic Change Detection Function
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67 %
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68 %PREDICTIONS
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69 % miremotion - Emotion, represented both as classes and dimensions
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70 %
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71 %ANALYSIS
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72 % mirmean - Returns the mean of any feature
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73 % mirstd - Returns the standard deviation of any feature
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74 % mirstat - Returns statistics of any feature
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75 % mirpeaks - Peaks
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76 % mirhisto - Histogram
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77 % mirentropy - Entropy
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78 % mirzerocross - Sign-changes ratio
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79 % mircentroid - Centroid (center of gravity)
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80 % mirspread - Spread (non-concentration)
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81 % mirskewness - Skewness (lack of symmetry)
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82 % mirkurtosis - Kurtosis (peakiness)
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83 % mirflatness - Flatness
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84 %
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85 %SIMILARITY
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86 % mirflux - Flux, i.e., distance between successive frames
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87 % mirsimatrix - Similarity matrix
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88 % mirnovelty - Novelty score
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89 % mirdist - Distance between audio files
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90 % mirquery - Query by example
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91 %
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92 %OTHER
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93 % mirclassify - Classifies audio sequences
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94 % mircluster - Clusters segments or frames
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95 % mirfeatures - Compute a large range of features
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96 % mirmap - Performs statistical mapping
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97 %
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98 %MATLAB FUNCTIONS generalized to the MIRtoolbox data
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99 % + - Superposes audio files
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100 % * - Combines autocor, cepstrum curves
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101 % corrcoef - Computes correlation between curves
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102 %
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103 %PREFERENCES
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104 % mirchunklim - Get or set the chunk size threshold
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105 % mirwaitbar - Toggles on/off the display of progress bars
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106 % mirverbose - Toggles on/off the display of ongoing operations
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107 % mirparallel - Toggles on/off parallel processing
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