qi (BddlZddlZddlmZddlmZGddeZy)N)util) IIRfilterc^eZdZdZd dZdZdZdZedZ e jdZ y) 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. cJ||_||_||_||_g|_yN)rate filter_class block_sizeoverlapblockwise_loudness)selfr r r r s B/opt/pipecat/venv/lib/python3.12/site-packages/pyloudnorm/meter.py__init__zMeter.__init__s' ($ "$cb |j}tj||j|j|j dk(r%t j||jddf}|jd}|jd}|jjD]4\}}t|D]!}|j|dd|f|dd|f<#6gd}|j} d} |j} d| z } ||jz } tt j| | z | | zz dz}t j d|}t j"||f}t|D]}|D]}t| || zz|jz}t| || zdzz|jz}d| |jzz t j$t j&||||fz|||f<t)j*5t)j,dt. |Dcgc]R}d d t j0t j$t|Dcgc]}|||||fzc}zzT}}}ddd|_t5|Dcgc] \}}|| k\s |}}}t)j*5t)j,dt. t|Dcgc]*}t j6|Dcgc] }|||f c},}}}dddd d t j0t j$t|Dcgc] }|||zc}zzd z }t5|Dcgc]\}}||kDs || kDs|}}}t)j*5t)j,dt. t j8t j:t|Dcgc]*}t j6|Dcgc] }|||f c},c}}}dddt j<d 5d d t j0t j$t|Dcgc] }|||zc}zz}ddd|Scc}wcc}}w#1swY?xYwcc}}wcc}wcc}}w#1swYxYwcc}wcc}}wcc}wcc}}w#1swYxYwcc}w#1swYSxYw) a Measure the integrated gated loudness of a signal. Uses the weighting filters and block size defined by the meter the integrated loudness is measured based upon the gating algorithm defined in the ITU-R BS.1770-4 specification. Input data must have shape (samples, ch) or (samples,) for mono audio. Supports up to 5 channels and follows the channel ordering: [Left, Right, Center, Left surround, Right surround] Params ------- data : ndarray Input multichannel audio data. Returns ------- LUFS : float Integrated gated loudness of the input measured in dB LUFS. rrN)?rr(\?rgQr)shapeignore)categoryg&1g$@)divide)copyr valid_audior r ndimnpreshaper_filtersitemsrange apply_filterr introundarangezerossumsquarewarningscatch_warnings simplefilterRuntimeWarninglog10r enumeratemean nan_to_numarrayerrstate)rdata input_data numChannels numSamplesr filter_stagechGT_gGamma_ar stepT numBlocksj_rangezijlul_jJ_g z_avg_gatedGamma_rLUFSs rintegrated_loudnesszMeter.integrated_loudness!s*YY[  TYY@ ??a J1A1A!1Da0HIJ &&q)  &&q) -1MM,?,?,A O (\<K( O#/#<#? ))Ay) HHK 2 3{# ZA Zq4x,tyy89q4x!|,tyy89tyy1RVVBIIjQRSTQTUVQVFW4I3f,g#hhhD i 12]p q q> $9V W W 3fQ;P1m p p4g i s!S;2S -SS S2 SS*S0S*S%+ S*4S0,S= T,T2T ATT -T; T  T..T$T.T$S  SS%S**S00S:T  TTT$$T.c v|j}|j} d|_d|_|j|d}|j||js t dd}d}d}d }|jDcgc] }||k\s | } }t | d k(rtj||_||_St | } tjtjdtj| d| z } dtj| z} | Dcgc] }|| |zk\s |} }t | d k(rtj||_||_Stj| |}tj| |}||z }|||_||_Scc}wcc}w#||_||_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 _r)r r _append_silencerJr ValueErrorlenrnanr'powerrr- percentile)rr3original_block_sizeoriginal_overlap ABS_THRES REL_THRESPRC_LOWPRC_HIGHxstl_absgated_vecn stl_powerstl_integratedstl_relgated_vec stl_perc_low stl_perc_highLRAs rloudness_rangezMeter.loudness_rangess,#oo<<) ,!DODL''3'GD  $ $T *** !>??IIGH,0+B+BUaa9nU U#$)vv&2DO+DL#$%ArxxBII6F,KLMPQQI"((9"55N+;_aqNU^D^?^_ _#$)vv2DO+DL==)97CLMM*:HEM,.C2DO+DL1 V `2DO+DLsCAF(9 FFF(6A'F( F#+F#/F(2F( F((F8ct||jz}tj|}t |j dk(rtj ||f}|St |j dk(rA|j d}tj||f}tj ||fd}|Std)Nrr)axiszInvalid shape for audio data)r#r rr&rQr concatenaterP)rr3rLnum_silence_samplessilencenew_audio_data num_channelss rrOzMeter._append_silences!"6"BC((./ tzz?a ^^T7O 1*3C2771:vtyyZf*gDMM, ')23UDII{)[DMM+ &'0a lE499V_'`DMM) $   > 1)23"''!* fdiiYe)fDMM+ &)23T499k)ZDMM+ &   = 0)23udiiQ\)]DMM+ &'0j&RVR[R[]f'gDMM) $   7 *09-I[]oquqzqz}O1PDMM, -/8>PRceienenqB0CDMM+ ,   8 + 4d6H6HI IrN)rpg?g?) __name__ __module__ __qualname____doc__rrJrdrOpropertyr setterrrrrsO&%PdB,H"""JJrr) r)numpyrr iirfilterrobjectrrrrrs! ]JF]Jr