wi (JddlZddlZddlmZddlmZGddeZdS)N)util) IIRfiltercbeZdZdZd dZdZdZdZed Z e j d Z d S) Metera Meter object which defines how the meter operates Defaults to the algorithm defined in ITU-R BS.1770-4. Parameters ---------- rate : float Sampling rate in Hz. filter_class : str Class of weighting filter used. - 'K-weighting' - 'Fenton/Lee 1' - 'Fenton/Lee 2' - 'Dash et al.' - 'DeMan' block_size : float Gating block size in seconds. K-weighting皙??cL||_||_||_||_g|_dSN)rate filter_class block_sizeoverlapblockwise_loudness)selfr rrrs `/root/.openclaw/workspace/chatterbox_venv_py311/lib/python3.11/site-packages/pyloudnorm/meter.py__init__zMeter.__init__s- ($ "$c N|}tj||j|j|jdkr"t j||jddf}|jd|jd}|j D]=\}}tD](}| |dd|f|dd|f<)>gd|j}d|j }d|z } ||jz } tt j| |z || zz dz} t jd| } t j| ftD]} | D]}t||| zz|jz}t||| zdzz|jz}d||jzz t jt j|||| fz| |f<t)j5t)jdt. fd | D}dddn #1swxYwY||_fd t3|Dt)j5t)jdt. fd tDdddn #1swxYwYd dt jt jfdtDzzdz fdt3|Dt)j5t)jdt. t jt jfdtDdddn #1swxYwYt jd5d dt jt jfdtDzz}dddn #1swxYwY|S)a Measure the integrated gated loudness of a signal. Uses the weighting filters and block size defined by the meter the integrated loudness is measured based upon the gating algorithm defined in the ITU-R BS.1770-4 specification. Input data must have shape (samples, ch) or (samples,) for mono audio. Supports up to 5 channels and follows the channel ordering: [Left, Right, Center, Left surround, Right surround] Params ------- data : ndarray Input multichannel audio data. Returns ------- LUFS : float Integrated gated loudness of the input measured in dB LUFS. rrN)?rr(\?rgQr)shapeignore)categoryc g|]IddtjtjfdtDzzJS)&1$@c6g|]}||fzSr ).0iGjzs r z8Meter.integrated_loudness...Ys)1\1\1\A!A$1Q3-1\1\1\r)nplog10sumrange)r!r$r# numChannelsr%s @rr&z-Meter.integrated_loudness..Ys\pppcd$"&1\1\1\1\1\1\{I[I[1\1\1\*]*]!^!^^^ppprc&g|] \}}|k |Sr r )r!r$l_jGamma_as rr&z-Meter.integrated_loudness..]s"===UQscWnnqnnnrcTg|]#tjfdD$S)c$g|] }|f Sr r r!r$r"r%s rr&z8Meter.integrated_loudness...bs!#8#8#8qAacF#8#8#8rr'meanr!r"J_gr%s @rr&z-Meter.integrated_loudness..bs<VVVa27#8#8#8#8#8C#8#8#899VVVrrrc2g|]}||zSr r r!r"r# z_avg_gateds rr&z-Meter.integrated_loudness..ds&2e2e2eQ1Q4+a.3H2e2e2erc2g|]\}}|k |k|Sr r )r!r$r-r.Gamma_rs rr&z-Meter.integrated_loudness..gs*PPPUQssW}}wqrcTg|]#tjfdD$S)c$g|] }|f Sr r r1s rr&z8Meter.integrated_loudness...ks!:O:O:Oa1QqS6:O:O:Orr2r4s @rr&z-Meter.integrated_loudness..ks=1m1m1mUV"':O:O:O:O:O3:O:O:O2P2P1m1m1mr)dividec2g|]}||zSr r r7s rr&z-Meter.integrated_loudness..os&3f3f3faAaD;q>4I3f3f3fr)copyr valid_audior rndimr'reshaper_filtersitemsr* apply_filterrintroundarangezerosr)squarewarningscatch_warnings simplefilterRuntimeWarningr enumerater( nan_to_numarrayerrstate)rdata input_data numSamplesr filter_stagechT_grstepT numBlocksj_ranger"r$luLUFSr#r.r:r5r+r%r8s @@@@@@@rintegrated_loudnesszMeter.integrated_loudness!s*YY[[  TY@@@ ?a  J1A!1Da0HIIJ &q)  &q) -1M,?,?,A,A O O (\<K(( O O#/#<#?? )Ay)) HK 2 3 3 3{## Z ZA Z Zq4x,ty899q4x!|,ty899ty1RVBIjQRSTQTUVQVFW===ill===  $ & & W W  !(^ D D D DVVVVV5CUCUVVVK W W W W W W W W W W W W W W W 4"(262e2e2e2e2eRWXcRdRd2e2e2e+f+f"g"gggjnnQPPPPillPPP  $ & & p p  !(^ D D D D-1m1m1m1m1mZ_`kZlZl1m1m1m(n(nooK p p p p p p p p p p p p p p p [ ) ) ) i iD28BF3f3f3f3f3fSXYdSeSe3f3f3f,g,g#h#hhhD i i i i i i i i i i i i i i i sJ,H88H<?H<88J<<KK?AN''N+.N+APP!Pc 8 |j}|j} d|_d|_||d}|||jst dd dd}d } fd |jD}t |d krtj||_||_St |}tj tj dtj |d|z }dtj |zfd |D} t | d krtj||_||_Stj | |} tj | |} | | z } | ||_||_S#||_||_wxYw) a Measure the loudness range of a signal. An implementation based on the MATLAB example of TECH 3342 - LOUDNESS RANGE: A MEASURE TO SUPPLEMENT EBU R 128 LOUDNESS NORMALIZATION Input data must have shape (samples, ch) or (samples,) for mono audio. Supports up to 5 channels and follows the channel ordering: [Left, Right, Center, Left surround, Right surround] Params ------- data : ndarray Input multichannel audio data. Returns ------- LRA : float Loudness Range measure in LU. Returns NaN if the signal is too quiet to compute LRA. g@g ףp= ?g?)silence_duration_seczNo blockwise loudness foundii _c g|] }|k| Sr r )r!x ABS_THRESs rr&z(Meter.loudness_range..sUUUaa9nnnnnrrc&g|] }|zk |Sr r )r!rf REL_THRESstl_integrateds rr&z(Meter.loudness_range..s)___aqNU^D^?^?^?^?^?^r)rr_append_silencer`r ValueErrorlenr'nanr)powerr=r( percentile)rrSoriginal_block_sizeoriginal_overlapPRC_LOWPRC_HIGHstl_absgated_vecn stl_powerstl_relgated_vec stl_perc_low stl_perc_highLRArgrirjs @@@rloudness_rangezMeter.loudness_rangess,#o<) ,!DODL''3'GGD  $ $T * * ** @ !>???IIGH VUUU4+BUUU #$$))v&2DO+DLL#$%%ArxBI6F,K,KLLMMPQQI"(9"5"55N_____+;___ #$$))v2DO+DLL=)97CCLM*:HEEM,.C2DO+DLL2DO+DL + + + +sB F +BF 0F Fct||jz}tj|}t |jdkrtj||f}nct |jdkr<|jd}tj||f}tj||fd}ntd|S)Nrr)axiszInvalid shape for audio data)rFr r'rIrmr concatenaterl)rrSrbnum_silence_samplessilencenew_audio_data num_channelss rrkzMeter._append_silences!"6"BCC(.// tz??a  ^T7O< "  = 0 0*3C271::vtyZf*g*gDM, ')23T49k)Z)ZDM+ & & &  > 1 1*3C271::vtyZf*g*gDM, ')23UDI{)[)[DM+ &'0a lE49V_'`'`DM) $ $ $  > 1 1)23"'!** fdiYe)f)fDM+ &)23T49k)Z)ZDM+ & & &  = 0 0)23udiQ\)])]DM+ &'0j&RVR[]f'g'gDM) $ $ $  7 * *09-I[]oquqz}O1P1PDM, -/8>PRceienqB0C0CDM+ , , ,  8 + + D4d6HII IrN)rr r ) __name__ __module__ __qualname____doc__rr`r|rkpropertyrsetterr rrrrs&%%%%PPPdB,B,B,H"""X"JJJJJrr) rKnumpyr'r iirfilterrobjectrr rrrs ]J]J]J]J]JF]J]J]J]J]Jr