h:7SSKrSSKJr SSKrSSKrSSKJr /SQr\R"\R"\R5R5r Sr Sr SrSrS rS r\ \\\\/rS rS \S \4SjrS\S\S\S\S \4 SjrS\S\S\ S\R2S\S \4 SjrS\S\S\ S \4SjrS\S\S\ S\ S \ S!\S"\ S \\\\\44S#jrS\S$\S\S\S\S\ S\S%\S\ S&\ S'\S"\ S \\\44S(jrS)\S*\S \4S+jrS,S-S.S/S0S1S.S2S3S3S3S4S3S5\4S\S\ S\S&\ S\ S \ S\ S6\ S"\ S%\S'\S!\S\ S\S*\S\S \4"S7jjrS8\ S \ 4S9jr S8\S \4S:jr!S;\ S \ 4S<jr"S;\S \4S=jr#S>\ S?\ S@\ SA\ SB\ S;\S \4SCjr$S>\ S?\ SA\ SB\ S8\S \4 SDjr%SE\SF\SG\ S@\ SA\ SH\ SI\ SB\ S \\\44SJjr&S,S-S.S/S0S1S.S5SKS.SLS2S3S3S3S4S3S5S5S3S3SMSNS/\4S\S\ S\S&\ S\ S \ S\ SA\ SO\S@\ S6\ SP\S"\ S%\S'\S!\S\ S\S*\SQ\SR\SS\SI\ SH\ ST\ S\S \46SUjjr'SV\SP\S \4SWjr(SV\SX\ S \4SYjr)S,SZS-S.S/S0S1S.S5SKS[S.SLS2S3S3S3S4S3S5S5SMSNS/\4S\S\ SX\ S\S&\ S\ S \ S\ SA\ SO\S@\ SV\S6\ SP\S"\ S%\S'\S!\S\ S\S*\SQ\SI\ SH\ ST\ S\S \46S\jjr*g)]N)Tuple)Tensor) get_mel_banksinverse_mel_scaleinverse_mel_scale_scalar mel_scalemel_scale_scalar spectrogramfbankmfccvtln_warp_freqvtln_warp_mel_freqgMbP?hamminghanningpovey rectangularblackmanc([RXS9$)Ndevicedtype)EPSILONtors S/var/www/auris/envauris/lib/python3.13/site-packages/torchaudio/compliance/kaldi.py _get_epsilonr#s ::V: 11xreturnc>US:XaS$SUS- R5-$)z6Returns the smallest power of 2 that is greater than xr) bit_length)rs r_next_power_of_2r#'s%Q15A!a%!3!3!555rwaveform window_size window_shift snip_edgescUR5S:XdeURS5nX RS5-URS54nU(a:XA:a*[R"SUR UR S9$SXA- U--nOl[R"US/5nXBS--U-nUS-US-- nUn US:aXx*Sn [R"XU 4SS9nO[R"X*SU 4SS9nXa4n URX5$)aGiven a waveform (1D tensor of size ``num_samples``), it returns a 2D tensor (m, ``window_size``) representing how the window is shifted along the waveform. Each row is a frame. Args: waveform (Tensor): Tensor of size ``num_samples`` window_size (int): Frame length window_shift (int): Frame shift snip_edges (bool): If True, end effects will be handled by outputting only frames that completely fit in the file, and the number of frames depends on the frame_length. If False, the number of frames depends only on the frame_shift, and we reflect the data at the ends. Returns: Tensor: 2D tensor of size (m, ``window_size``) where each row is a frame r r)rrrrr!Ndim) r+sizestridetorchemptyrrflipcat as_strided) r$r%r&r' num_samplesstridesmreversed_waveformpad pad_rightpad_leftsizess r _get_stridedr;,s <<>Q  --"Kooa00(//!2DEG  $;;vX^^HOOT T[.<??A!JJx!5 A- .< ?Q!22% 7)/Hyy(i!@aHHyy(45/9!=1EH  E   u ..r window_typeblackman_coeffrrc JU[:Xa[R"USX4S9$U[:Xa[R"USSSX4S9$U[ :Xa%[R"USX4S9R S5$U[:Xa[R"XUS9$U[:Xa|S[R-US - - n[R"XUS9nUS [R"XV-5-- S U- [R"SU-U-5--RX4S9$[S U-5e) z6Returns a window function with the given type and sizeF)periodicrrgHzG?gq= ףp?)r?alphabetarrg333333?rr!r ?zInvalid window type )HANNINGr. hann_windowHAMMINGhamming_windowPOVEYpow RECTANGULARonesBLACKMANmathpiarangecosr Exception)r<r%r=rrawindow_functions r_feature_window_functionrSVsg  uVYY  ##K%tRV_ess    uVY]]^bcc  #zz+EBB  K;? +,,{O EIIa122 3^#uyyQ1H'II J "F" (  ) .<==r strided_inputepsilon energy_floorc BURURpC[R"UR S5R S5U5R 5nUS:XaU$[R"U[R"[R "U5X4S95$)z>qA % 1 ,MLQ#%$xx2266}7N7Nq7QSY`k6ltt  &BVWXZ][]Z]W]B^(^^ /{afgqq O"O3M(*8 ++//  # #A &M(:ST0 '!*  +MLQ + ++rr\ subtract_meancdU(a([R"USS9RS5nX- nU$)Nrr*)r.ryrz)r\r col_meanss r_subtract_column_meanrs/JJv1-77: # MrgzG?rsrXrfg9@g$@g ףp= ?Tg@@F min_durationcURURnn[UU5n[XXX[U5unnnn[ U5X|-:a[ R "S5$[UUUUUUU U UUU U5 unn[ RRU5n[ R"UR5RS5U5R5nUUSS2S4'[UU5nU$)a& Create a spectrogram from a raw audio signal. This matches the input/output of Kaldi's compute-spectrogram-feats. Args: waveform (Tensor): Tensor of audio of size (c, n) where c is in the range [0,2) blackman_coeff (float, optional): Constant coefficient for generalized Blackman window. (Default: ``0.42``) channel (int, optional): Channel to extract (-1 -> expect mono, 0 -> left, 1 -> right) (Default: ``-1``) dither (float, optional): Dithering constant (0.0 means no dither). If you turn this off, you should set the energy_floor option, e.g. to 1.0 or 0.1 (Default: ``0.0``) energy_floor (float, optional): Floor on energy (absolute, not relative) in Spectrogram computation. Caution: this floor is applied to the zeroth component, representing the total signal energy. The floor on the individual spectrogram elements is fixed at std::numeric_limits::epsilon(). (Default: ``1.0``) frame_length (float, optional): Frame length in milliseconds (Default: ``25.0``) frame_shift (float, optional): Frame shift in milliseconds (Default: ``10.0``) min_duration (float, optional): Minimum duration of segments to process (in seconds). (Default: ``0.0``) preemphasis_coefficient (float, optional): Coefficient for use in signal preemphasis (Default: ``0.97``) raw_energy (bool, optional): If True, compute energy before preemphasis and windowing (Default: ``True``) remove_dc_offset (bool, optional): Subtract mean from waveform on each frame (Default: ``True``) round_to_power_of_two (bool, optional): If True, round window size to power of two by zero-padding input to FFT. (Default: ``True``) sample_frequency (float, optional): Waveform data sample frequency (must match the waveform file, if specified there) (Default: ``16000.0``) snip_edges (bool, optional): If True, end effects will be handled by outputting only frames that completely fit in the file, and the number of frames depends on the frame_length. If False, the number of frames depends only on the frame_shift, and we reflect the data at the ends. (Default: ``True``) subtract_mean (bool, optional): Subtract mean of each feature file [CMS]; not recommended to do it this way. (Default: ``False``) window_type (str, optional): Type of window ('hamming'|'hanning'|'povey'|'rectangular'|'blackman') (Default: ``'povey'``) Returns: Tensor: A spectrogram identical to what Kaldi would output. The shape is (m, ``padded_window_size // 2 + 1``) where m is calculated in _get_strided r@N)rrrrlrjr.r/rfftrfftrYabsrHr[r)r$r=r_rnrVrbrarrdrmrorcr`r'rr<rrrUr&r%rkrTrrpower_spectrums rr r shOOX^^EF65)G>a+,_v?;HlK); 8}|66{{1~'2 ($M$ )).. 'CYYswwy}}S17;??AN,N1a4*>=IN rmel_freqc@S[R"US- 5S- -$N@@rf)rLexprs rrr>s DHHX./#5 66rc4SUS- R5S- -$r)rrs rrrBs X&++-3 44rfreqc@S[R"SUS- -5-$Nrrfr)rLr[rs rr r Fs DHHS4%</0 00rc4SSUS- -R5-$r)r[rs rrrJs S4%<',,. ..rvtln_low_cutoffvtln_high_cutofflow_freq high_freqvtln_warp_factorc.X:dS5eX:dS5eU[SU5-nU[SU5-nSU- nX-n X-n Xb:aXs:deX- Xb- - n X:- X7- - n [R"U5n [R"XR5[R "XS5-n[R"XV5n[R"XW5n[R "XW5nXim4K   4 C!HHT4uxx7PPxx Hxx HhhtGd7mi.GHHCLN*CMT^h-FGGCM!%!> ? I I! LCh:#89Hc/i*&<=J3yyQ8Z)HI   )#x(588C+DD88C,uxxY/GG'V #H-X  rg4@g@gY@ htk_compat num_mel_bins use_energy use_log_fbank use_power vtln_warpcfURURnn[XUXeX5unnnn[U5U U-:a[R "SUUS9$[ UUUUUUUU UUUU 5 unn [RRU5R5n!U(aU!RS5n![U UUXUUU5un"n#U"RUUS9n"[RRRU"SSSS9n"[R "U!U"R"5n"U(a/[R$"U"['UU55R)5n"U(aGU R+S5n U(a[R,"U"U 4SS9n"O[R,"U U"4SS9n"[/U"U5n"U"$) aCreate a fbank from a raw audio signal. This matches the input/output of Kaldi's compute-fbank-feats. Args: waveform (Tensor): Tensor of audio of size (c, n) where c is in the range [0,2) blackman_coeff (float, optional): Constant coefficient for generalized Blackman window. (Default: ``0.42``) channel (int, optional): Channel to extract (-1 -> expect mono, 0 -> left, 1 -> right) (Default: ``-1``) dither (float, optional): Dithering constant (0.0 means no dither). If you turn this off, you should set the energy_floor option, e.g. to 1.0 or 0.1 (Default: ``0.0``) energy_floor (float, optional): Floor on energy (absolute, not relative) in Spectrogram computation. Caution: this floor is applied to the zeroth component, representing the total signal energy. The floor on the individual spectrogram elements is fixed at std::numeric_limits::epsilon(). (Default: ``1.0``) frame_length (float, optional): Frame length in milliseconds (Default: ``25.0``) frame_shift (float, optional): Frame shift in milliseconds (Default: ``10.0``) high_freq (float, optional): High cutoff frequency for mel bins (if <= 0, offset from Nyquist) (Default: ``0.0``) htk_compat (bool, optional): If true, put energy last. Warning: not sufficient to get HTK compatible features (need to change other parameters). (Default: ``False``) low_freq (float, optional): Low cutoff frequency for mel bins (Default: ``20.0``) min_duration (float, optional): Minimum duration of segments to process (in seconds). (Default: ``0.0``) num_mel_bins (int, optional): Number of triangular mel-frequency bins (Default: ``23``) preemphasis_coefficient (float, optional): Coefficient for use in signal preemphasis (Default: ``0.97``) raw_energy (bool, optional): If True, compute energy before preemphasis and windowing (Default: ``True``) remove_dc_offset (bool, optional): Subtract mean from waveform on each frame (Default: ``True``) round_to_power_of_two (bool, optional): If True, round window size to power of two by zero-padding input to FFT. (Default: ``True``) sample_frequency (float, optional): Waveform data sample frequency (must match the waveform file, if specified there) (Default: ``16000.0``) snip_edges (bool, optional): If True, end effects will be handled by outputting only frames that completely fit in the file, and the number of frames depends on the frame_length. If False, the number of frames depends only on the frame_shift, and we reflect the data at the ends. (Default: ``True``) subtract_mean (bool, optional): Subtract mean of each feature file [CMS]; not recommended to do it this way. (Default: ``False``) use_energy (bool, optional): Add an extra dimension with energy to the FBANK output. (Default: ``False``) use_log_fbank (bool, optional):If true, produce log-filterbank, else produce linear. (Default: ``True``) use_power (bool, optional): If true, use power, else use magnitude. (Default: ``True``) vtln_high (float, optional): High inflection point in piecewise linear VTLN warping function (if negative, offset from high-mel-freq (Default: ``-500.0``) vtln_low (float, optional): Low inflection point in piecewise linear VTLN warping function (Default: ``100.0``) vtln_warp (float, optional): Vtln warp factor (only applicable if vtln_map not specified) (Default: ``1.0``) window_type (str, optional): Type of window ('hamming'|'hanning'|'povey'|'rectangular'|'blackman') (Default: ``'povey'``) Returns: Tensor: A fbank identical to what Kaldi would output. The shape is (m, ``num_mel_bins + use_energy``) where m is calculated in _get_strided rrr)rr rtrur r*)rrrlrjr.r/rrrrrHrrr{r|r7mmTrYrr[rzr1r)$r$r=r_rnrVrbrarrrrrrdrmrorcr`r'rrrrrrrr<rrr&r%rkrTrspectrum mel_energies_s$ rr r sVOOX^^EF>a+[H]?;HlK); 8}|&666{{1V599(3 ($M$ yy~~m,002H<<$$(*:HQY[dfoOL! ??&?>L88&&**<jXY*ZL88Hlnn5Lyy|FE/JKOOQ -77:  99l4E%FANL 99&7%FANL(}EL rnum_cepsc[RRXS5n[R"S[ U5- 5USS2S4'USS2SU24nU$)Northor r) torchaudior| create_dctrLsqrtfloat)rr dct_matrixs r_get_dct_matrixrsW&&11,gVJ yyU<%8!89Jq!tAyyL)J rcepstral_lifterc[R"U5nSSU-[R"[RU-U- 5--$)NrfrB)r.rNsinrLrM)rris r_get_lifter_coeffsrs=  XA &477Q;3P)QQ QQrg6@ c&X::d SX4-5eURURnn[S&0SU_SU_SU_SU_SU_SU_SU_S U_S U _S U _S U _S U _SU_SU_SU_SU_SU_SU_SS_SU_SS_SS_SU_SU_SU_SU_6nU(a0USS2U (aU OS4n[U (+5nUSS2UU U-24n[ X5R UUS 9nUR U5nUS!:wa-[X5RS5n UU R UUS"9-nU(a WUSS2S4'U (aZUSS2S4RS#5n!USS2S#S24nU(dU![R"S$5-n![R"UU!4S#S%9n[UU5nU$)'aCreate a mfcc from a raw audio signal. This matches the input/output of Kaldi's compute-mfcc-feats. Args: waveform (Tensor): Tensor of audio of size (c, n) where c is in the range [0,2) blackman_coeff (float, optional): Constant coefficient for generalized Blackman window. (Default: ``0.42``) cepstral_lifter (float, optional): Constant that controls scaling of MFCCs (Default: ``22.0``) channel (int, optional): Channel to extract (-1 -> expect mono, 0 -> left, 1 -> right) (Default: ``-1``) dither (float, optional): Dithering constant (0.0 means no dither). If you turn this off, you should set the energy_floor option, e.g. to 1.0 or 0.1 (Default: ``0.0``) energy_floor (float, optional): Floor on energy (absolute, not relative) in Spectrogram computation. Caution: this floor is applied to the zeroth component, representing the total signal energy. The floor on the individual spectrogram elements is fixed at std::numeric_limits::epsilon(). (Default: ``1.0``) frame_length (float, optional): Frame length in milliseconds (Default: ``25.0``) frame_shift (float, optional): Frame shift in milliseconds (Default: ``10.0``) high_freq (float, optional): High cutoff frequency for mel bins (if <= 0, offset from Nyquist) (Default: ``0.0``) htk_compat (bool, optional): If true, put energy last. Warning: not sufficient to get HTK compatible features (need to change other parameters). (Default: ``False``) low_freq (float, optional): Low cutoff frequency for mel bins (Default: ``20.0``) num_ceps (int, optional): Number of cepstra in MFCC computation (including C0) (Default: ``13``) min_duration (float, optional): Minimum duration of segments to process (in seconds). (Default: ``0.0``) num_mel_bins (int, optional): Number of triangular mel-frequency bins (Default: ``23``) preemphasis_coefficient (float, optional): Coefficient for use in signal preemphasis (Default: ``0.97``) raw_energy (bool, optional): If True, compute energy before preemphasis and windowing (Default: ``True``) remove_dc_offset (bool, optional): Subtract mean from waveform on each frame (Default: ``True``) round_to_power_of_two (bool, optional): If True, round window size to power of two by zero-padding input to FFT. (Default: ``True``) sample_frequency (float, optional): Waveform data sample frequency (must match the waveform file, if specified there) (Default: ``16000.0``) snip_edges (bool, optional): If True, end effects will be handled by outputting only frames that completely fit in the file, and the number of frames depends on the frame_length. If False, the number of frames depends only on the frame_shift, and we reflect the data at the ends. (Default: ``True``) subtract_mean (bool, optional): Subtract mean of each feature file [CMS]; not recommended to do it this way. (Default: ``False``) use_energy (bool, optional): Add an extra dimension with energy to the FBANK output. (Default: ``False``) vtln_high (float, optional): High inflection point in piecewise linear VTLN warping function (if negative, offset from high-mel-freq (Default: ``-500.0``) vtln_low (float, optional): Low inflection point in piecewise linear VTLN warping function (Default: ``100.0``) vtln_warp (float, optional): Vtln warp factor (only applicable if vtln_map not specified) (Default: ``1.0``) window_type (str, optional): Type of window ('hamming'|'hanning'|'povey'|'rectangular'|'blackman') (Default: ``"povey"``) Returns: Tensor: A mfcc identical to what Kaldi would output. The shape is (m, ``num_ceps``) where m is calculated in _get_strided z5num_ceps cannot be larger than num_mel_bins: %d vs %dr$r=r_rnrVrbrarrrrrrdrmrorcr`r'rFrrTrrrrr<Nrr)rXrr r!r*)rrr rhrrmatmulrrzrLrr.r1r)"r$r=rr_rnrVrbrarrrrrrrdrmrorcr`r'rrrrrr<rrfeaturer mel_offsetr lifter_coeffsenergys" rr r sYV  #w%\`h_w%ww #OOX^^EF %  "  "  ""!8* 4!"*#$%&'()*+,-./01234 5G:#Az|q$HIZ( !Z<*+DEEF!8;;%PV;WJnnZ(G#*8EOOPQR =##6#??)1 A((+!QR%. diil "F))Wf-15#G];G Nr)+rLtypingrr.rr__all__r\finforepsrrirErCrGrIrKWINDOWSrrhr#boolr;strrrSr^rlrrr rrr rr rrr rrr rrrrs    ,,u{{5;;/33 4    GUK :2666 '/6'/'/3'/TX'/]c'/T>>>> LL >  >  ><c6cFc%cTZcCC CC C  C  C#C 63S !C:?,?,?,?, ?,  ?,  ?,?,?,?, ?,?,#?, 66>?,D&&!%)!"&%!VVVV  V  V  VVV#VVV VVVV !V" #Vr7u775565151U1/F/v/HHHH H  H  H HV      6KKKK K  K  KKK 66>K`!%)!"&%5CCCC  C  C  CCCCCCC#CCC  !C"#C$%C&'C()C*+C,-C./C01C23C45C6 7CL c   RRuRR!!%)!"&%5PPPP P  P  PPPPPPPPP#P !P"#P$ %P&'P()P*+P,-P./P01P23P45P6 7Pr