1zhouhaoran1/moonmel/src/features/tempo

src

features

README
U
AnalysisResult
U
AudioBuffer
U
BiquadCoeffs
U
BiquadFilter
U
ChromaNorm
U
Complex
U
ContrastConfig
U
CqtConfig
U
FeatureConfig
U
FeatureMatrix
U
Formant
U
FormantConfig
U
FormantFrame
U
HpssConfig
U
HpssResult
U
LogScale
U
LoudnessResult
U
LpcResult
U
MaskMode
U
MelError
U
MelNorm
U
MelScale
U
MultiChannelAudioBuffer
U
OnsetConfig
U
OnsetMethod
U
PitchTrack
U
StreamingExtractor
U
TempoConfig
U
TempogramResult
U
WindowType
U
YinConfig
V
analyze
V
apply_k_weighting
V
autocorrelation
V
bluestein_fft
V
bluestein_ifft
V
chroma_filterbank
V
chroma_from_spectrogram
V
chroma_stft
V
compute_delta
V
compute_energy
V
compute_rms
V
cqt
V
cqt_frequencies
V
create_streaming_extractor
V
create_window
V
cumulative_mean_normalized_difference
V
dct_ii
V
decode_wav
V
deemphasis
V
dft
V
difference_function
V
durand_kerner
V
fft
V
fft_padded
V
formant_frequencies
V
formant_track
V
formants_frame
V
harmonic_energy_ratio
V
hpss
V
hpss_from_audio
V
idft
V
ifft
V
interchannel_level_difference
V
interchannel_phase_difference
V
istft
V
levinson_durbin
V
log_mel_spectrogram
V
loudness_meter
V
lpc
V
lpc_features
V
lpc_residual
V
lpc_to_lpcc
V
lpcc_features
V
median_filter_1d
V
median_filter_freq
V
median_filter_time
V
mel_filterbank
V
mel_spectrogram
V
mfcc
V
multichannel_mel
V
multichannel_mfcc
V
multichannel_stft
V
onset_detect_audio
V
onset_strength
V
onset_strength_audio
V
pad_reflect
V
peak_pick
V
percussive_energy_ratio
V
phase_vocoder
V
pitch_class_name
V
pitch_shift
V
pitch_yin
V
power_to_db
V
preemphasis
V
resample
V
resample_linear
V
resample_polyphase
V
resample_sinc
V
resample_to_length
V
rfft_padded
V
spectral_centroid
V
spectral_contrast
V
spectral_contrast_audio
V
spectral_flatness
V
spectral_flux
V
spectral_rolloff
V
stft
V
stft_complex
V
super_flux
V
tempogram
V
tempogram_from_onset
V
time_stretch
V
true_peak_db
V
yin_frame
V
zero_crossing_rate

1zhouhaoran1/moonmel/src/features/tempo does not have a README file

TempoConfig

pub(all) struct TempoConfig {
  min_bpm : Double
  max_bpm : Double
  start_bpm : Double
  std_bpm : Double
  win_length : Int
  hop_length : Int
} derive(@moonbitlang/core/debug.Debug
Debug)

Configuration for tempogram computation and tempo estimation.

TempoConfig::default

source

fn TempoConfig::default() -> TempoConfig

Default tempo configuration.

TempoConfig::to_repr

source

fn TempoConfig::to_repr(TempoConfig) -> @moonbitlang/core/debug.Repr
Repr

TempogramResult

source

pub(all) struct TempogramResult {
  tempogram : @1zhouhaoran1/moonmel/src/core/types.FeatureMatrix
FeatureMatrix
  tempi : Array[Double]
  bpm : Double
} derive(@moonbitlang/core/debug.Debug
Debug)

Result of tempogram analysis.

TempogramResult::to_repr

source

fn TempogramResult::to_repr(TempogramResult) -> @moonbitlang/core/debug.Repr
Repr

tempogram

source

fn tempogram(audio : @1zhouhaoran1/moonmel/src/core/types.AudioBuffer
AudioBuffer, feature_config : @1zhouhaoran1/moonmel/src/core/types.FeatureConfig
FeatureConfig, tempo_config? : TempoConfig) -> Result[TempogramResult, @1zhouhaoran1/moonmel/src/core/types.MelError
MelError]

Extract tempogram and estimate tempo directly from single-channel AudioBuffer.

tempogram_from_onset

source

fn tempogram_from_onset(onset_env : Array[Double], sample_rate : Int, hop_length : Int, config? : TempoConfig) -> TempogramResult

Compute autocorrelation tempogram and estimate global tempo from onset envelope. Only integer lags inside the inclusive BPM range and analysis window are used. Returns an empty result with bpm=0 when no such lag exists.