9=ehdZddlZddlZddlZddlZddlZddlmZgdZGdde Z GddeZ e j e j hZd Zd Z dd Zd ZdZdZddZdZdZdS)z Module to read / write wav files using NumPy arrays Functions --------- `read`: Return the sample rate (in samples/sec) and data from a WAV file. `write`: Write a NumPy array as a WAV file. N)IntEnum)WavFileWarningreadwriteceZdZdS)rN)__name__ __module__ __qualname__0lib/python3.11/site-packages/scipy/io/wavfile.pyrrsDr rc~eZdZdZdZdZdZdZdZdZ dZ d Z d Z d Z d Zd ZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZ dZ!dZ"d Z#d!Z$d"Z%d#Z&d$Z'd%Z(d&Z)d'Z*d(Z+d)Z,d*Z-d+Z.d,Z/d-Z0d.Z1d/Z2d0Z3d1Z4d2Z5d3Z6d4Z7d5Z8d6Z9d7Z:d8Z;d9ZdZAd?ZBd@ZCdAZDdBZEdCZFdDZGdEZHdFZIdGZJdHZKdIZLdJZMdKZNdLZOdMZPdNZQdOZRdPZSdQZTdRZUdSZVdTZWdUZXdVZYdWZZdXZ[dYZ\dZZ]d[Z^d\Z_d]Z`d^Zad_Zbd`ZcdaZddbZedcZfddZgdeZhdfZidgZjdhZkdiZldjZmdkZndlZodmZpdnZqdoZrdpZsdqZtdrZudsZvdtZwduZxdvZydwZzdxZ{dyZ|dzZ}d{Z~d|Zd}Zd~ZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZdZ dZ dZ d Z d Z d Zd Zd S( WAVE_FORMATz WAVE form wFormatTag IDs Complete list is in mmreg.h in Windows 10 SDK. ALAC and OPUS are the newest additions, in v10.0.14393 2016-07 r  !"#$%&'(0123456789:;<=@ABCDEPRSUY`abcdefgipqrstuvwxyz{iiii i!i#i%i0i1i2i3i4i5i6i@iAiBiPiQiUi`iaibicidipiqirisitiuiviwixiiiiiiiii i0i@iAiIiPiQi`ipiqirisiiiiiPiQiiiiPiiiiiiiiiiiiiiiiiiiiiii i i iiiqiyii iii i i3iCAiBiCBiLCiLViVWiOgiPgiQgiogipgiqgialipiOpimpiasibsicsi!zi"ziiiiiiiiii i i i i iiiiiiiiiiiiiiiiiii i!i"i#i$iiiN(rr r __doc__UNKNOWNPCMADPCM IEEE_FLOATVSELPIBM_CVSDALAWMULAWDTSDRM WMAVOICE9 WMAVOICE10 OKI_ADPCM DVI_ADPCM IMA_ADPCMMEDIASPACE_ADPCM SIERRA_ADPCM G723_ADPCMDIGISTDDIGIFIXDIALOGIC_OKI_ADPCMMEDIAVISION_ADPCMCU_CODEC HP_DYN_VOICE YAMAHA_ADPCMSONARCDSPGROUP_TRUESPEECHECHOSC1AUDIOFILE_AF36APTXAUDIOFILE_AF10 PROSODY_1612LRC DOLBY_AC2GSM610MSNAUDIO ANTEX_ADPCMECONTROL_RES_VQLPCDIGIREAL DIGIADPCMCONTROL_RES_CR10 NMS_VBXADPCM CS_IMAADPCMECHOSC3ROCKWELL_ADPCMROCKWELL_DIGITALKXEBEC G721_ADPCM G728_CELPMSG723 INTEL_G723_1 INTEL_G729 SHARP_G726MPEGRT24PAC MPEGLAYER3 LUCENT_G723CIRRUSESPCMVOXWARE CANOPUS_ATRAC G726_ADPCM G722_ADPCMDSAT DSAT_DISPLAYVOXWARE_BYTE_ALIGNED VOXWARE_AC8 VOXWARE_AC10 VOXWARE_AC16 VOXWARE_AC20 VOXWARE_RT24 VOXWARE_RT29VOXWARE_RT29HW VOXWARE_VR12 VOXWARE_VR18 VOXWARE_TQ40 VOXWARE_SC3 VOXWARE_SC3_1 SOFTSOUND VOXWARE_TQ60MSRT24G729AMVI_MVI2DF_G726 DF_GSM610ISIAUDIOONLIVEMULTITUDE_FT_SX20INFOCOM_ITS_G721_ADPCM CONVEDIA_G729 CONGRUENCYSBC24DOLBY_AC3_SPDIFMEDIASONIC_G723 PROSODY_8KBPS ZYXEL_ADPCM PHILIPS_LPCBBPACKEDMALDEN_PHONYTALKRACAL_RECORDER_GSMRACAL_RECORDER_G720_ARACAL_RECORDER_G723_1RACAL_RECORDER_TETRA_ACELPNEC_AACRAW_AAC1RHETOREX_ADPCMIRAT VIVO_G723 VIVO_SIREN PHILIPS_CELPPHILIPS_GRUNDIG DIGITAL_G723SANYO_LD_ADPCMSIPROLAB_ACEPLNETSIPROLAB_ACELP4800SIPROLAB_ACELP8V3 SIPROLAB_G729SIPROLAB_G729ASIPROLAB_KELVIN VOICEAGE_AMR G726ADPCMDICTAPHONE_CELP68DICTAPHONE_CELP54QUALCOMM_PUREVOICEQUALCOMM_HALFRATETUBGSMMSAUDIO1WMAUDIO2WMAUDIO3WMAUDIO_LOSSLESSWMASPDIFUNISYS_NAP_ADPCMUNISYS_NAP_ULAWUNISYS_NAP_ALAWUNISYS_NAP_16KSYCOM_ACM_SYC008SYCOM_ACM_SYC701_G726LSYCOM_ACM_SYC701_CELP54SYCOM_ACM_SYC701_CELP68KNOWLEDGE_ADVENTURE_ADPCMFRAUNHOFER_IIS_MPEG2_AACDTS_DSCREATIVE_ADPCMCREATIVE_FASTSPEECH8CREATIVE_FASTSPEECH10 UHER_ADPCMULEAD_DV_AUDIOULEAD_DV_AUDIO_1 QUARTERDECKILINK_VC RAW_SPORTESST_AC3GENERIC_PASSTHRUIPI_HSX IPI_RPELPCS2SONY_SCXSONY_SCY SONY_ATRAC3SONY_SPC TELUM_AUDIOTELUM_IA_AUDIONORCOM_VOICE_SYSTEMS_ADPCM FM_TOWNS_SNDMICRONASMICRONAS_CELP833 BTV_DIGITALINTEL_MUSIC_CODER INDEO_AUDIO QDESIGN_MUSIC ON2_VP7_AUDIO ON2_VP6_AUDIO VME_VMPCMTPCLIGHTWAVE_LOSSLESSOLIGSMOLIADPCMOLICELPOLISBCOLIOPRLH_CODEC LH_CODEC_CELP LH_CODEC_SBC8LH_CODEC_SBC12LH_CODEC_SBC16NORRIS ISIAUDIO_2SOUNDSPACE_MUSICOMPRESS MPEG_ADTS_AAC MPEG_RAW_AAC MPEG_LOASNOKIA_MPEG_ADTS_AACNOKIA_MPEG_RAW_AACVODAFONE_MPEG_ADTS_AACVODAFONE_MPEG_RAW_AAC MPEG_HEAACVOXWARE_RT24_SPEECHSONICFOUNDRY_LOSSLESSINNINGS_TELECOM_ADPCMLUCENT_SX8300PLUCENT_SX5363SCUSEEMENTCSOFT_ALF2CM_ACMDVMDTS2MAKEAVISDIVIO_MPEG4_AACNOKIA_ADAPTIVE_MULTIRATE DIVIO_G726 LEAD_SPEECH LEAD_VORBIS WAVPACK_AUDIOOGG_VORBIS_MODE_1OGG_VORBIS_MODE_2OGG_VORBIS_MODE_3OGG_VORBIS_MODE_1_PLUSOGG_VORBIS_MODE_2_PLUSOGG_VORBIS_MODE_3_PLUSALAC _3COM_NBXOPUSFAAD_AACAMR_NBAMR_WBAMR_WP GSM_AMR_CBRGSM_AMR_VBR_SIDCOMVERSE_INFOSYS_G723_1COMVERSE_INFOSYS_AVQSBCCOMVERSE_INFOSYS_SBC SYMBOL_G729_AVOICEAGE_AMR_WBINGENIENT_G726 MPEG4_AAC ENCORE_G726 ZOLL_ASAO SPEEX_VOICE VIANIX_MASCWM9_SPECTRUM_ANALYZERWMF_SPECTRUM_ANAYZERGSM_610GSM_620GSM_660GSM_690GSM_ADAPTIVE_MULTIRATE_WB POLYCOM_G722 POLYCOM_G728POLYCOM_G729_A POLYCOM_SIRENGLOBAL_IP_ILBCRADIOTIME_TIME_SHIFT_RADIONICE_ACA NICE_ADPCM VOCORD_G721 VOCORD_G726 VOCORD_G722_1 VOCORD_G728 VOCORD_G729 VOCORD_G729_A VOCORD_G723_1 VOCORD_LBC NICE_G728FRACE_TELECOM_G729CODIANFLAC EXTENSIBLE DEVELOPMENTr r r rrs G C EJ EH D E C CIJIIILJGGHLL F GN DNL CI FHLHILKGN EJI FLJJ D D CJK F EGMJJ DL!KLLLLLNLLLKMIL F EHGIH F#MJ EOOMKM F""!'GHN DIJLOLNMNOLI FHHHHOON#$$ &% FN!"JNKHIHGI CHHKHKN!'LHKKMMMI C FHG F FHMMNN FJ$MLI #"J ""NNG C DHO%JKKM### DI DH F F FKO$$!MONIKIKK"!GGGG &LLNMN!'HJKKMKKMMJI F DJKKKr rc t|j}n#t$r|d}YnwxYwtd|dddtDz)Nz#06xzUnknown wave file format: z. Supported formats: z, c3$K|] }|jV dS)N)name).0xs r z$_raise_bad_format..=s$BB!qvBBBBBBr )rr ValueErrorjoinKNOWN_WAVE_FORMATS) format_tag format_names r _raise_bad_formatr6s+!*--2 +++#** + !+!!!YYBB/ABBBBBC D DDs ((c|rd}nd}tj|dz|dd}|dkrtdtj|dz|d}d}|\}}}} } } |tjkr|d krtj|d z|d d} |d z }| d krg|d } |d z }| d d }|rd}nd}||r&tj|dz|ddd}ntd|tvrt|||kr|||z t|||tj kr!| || zkrtd|d| d| ||||| | | fS)a% Returns ------- size : int size of format subchunk in bytes (minus 8 for "fmt " and itself) format_tag : int PCM, float, or compressed format channels : int number of channels fs : int sampling frequency in samples per second bytes_per_second : int overall byte rate for the file block_align : int bytes per sample, including all channels bit_depth : int bits per sample Notes ----- Assumes file pointer is immediately after the 'fmt ' id ><Irrrz.Binary structure of wave file is not compliantHHIIHHrHrr!rs 8qs 8qNz{WAV header is invalid: nAvgBytesPerSec must equal product of nSamplesPerSec and nBlockAlign, but file has nSamplesPerSec = z, nBlockAlign = z, and nAvgBytesPerSec = ) structunpackrrrrendswithrr_handle_pad_byter{)fid is_big_endianfmtsizeres bytes_readrchannelsfsbytes_per_second block_align bit_depthext_chunk_sizeextensible_chunk_dataraw_guidtails r _read_fmt_chunkr@s;. =S#((1++ . .q 1D byyIJJJ -H chhrll 3 3CJILFJ". Y[+++s3w <rrrrV1r=iz(Unsupported bit depth: the WAV file has z-bit integer data.>r&r=fz-bit floating-point data.)dtypecount)rri4i8N>rrrrc)rmodeoffsetshapezmmap=True not compatible with z-byte container size.)rrrrr{rr}rtellnumpyfromfileioUnsupportedOperationseek frombufferzeroslenritemsizereshapeviewrmemmapr)rrrrrrmmaprrbytes_per_sample n_samplesrstartrdatadtas r _read_data_chunkrs4 =S#((1++ . .q 1D#h.((I[_$$    Q     EE  - -EE "__//-//EEB$-BBBCC C {- - -  //-//EEI$-IIIJJ J *%%% HHJJE I A!TMMDDyE>#U%@@@DD& A A A HHUA   #CHHTNN%@@@DDD A D==/144CS***B SYY*::EKOOI>> from os.path import dirname, join as pjoin >>> from scipy.io import wavfile >>> import scipy.io Get the filename for an example .wav file from the tests/data directory. >>> data_dir = pjoin(dirname(scipy.io.__file__), 'tests', 'data') >>> wav_fname = pjoin(data_dir, 'test-44100Hz-2ch-32bit-float-be.wav') Load the .wav file contents. >>> samplerate, data = wavfile.read(wav_fname) >>> print(f"number of channels = {data.shape[1]}") number of channels = 2 >>> length = data.shape[0] / samplerate >>> print(f"length = {length}s") length = 0.01s Plot the waveform. >>> import matplotlib.pyplot as plt >>> import numpy as np >>> time = np.linspace(0., length, data.shape[0]) >>> plt.plot(time, data[:, 0], label="Left channel") >>> plt.plot(time, data[:, 1], label="Right channel") >>> plt.legend() >>> plt.xlabel("Time [s]") >>> plt.ylabel("Amplitude") >>> plt.show() rFrbrzQReached EOF prematurely; finished at {:d} bytes, expected {:d} bytes from header.r) stacklevelzUnexpected end of file.zIncomplete chunk ID: z, ignoring it.fmt TrrrfactdatazNo fmt chunk before datasLIST>FakeJUNKz-Chunk (non-data) not understood, skipping it.r)hasattropenrrrwarningswarnformatrrrrrrrcloser)filenamerrrrfmt_chunk_receiveddata_chunk_receivedchunk_idmsg fmt_chunkrrrrrrs r rrsLx  #8T""8#3C#8#8 ="#hhjj9$$xx{{H *& @M; I66&1 6666 $%>???X"">d8nn>>%**=*M#(8"8.-.00000%S//)7""%)"+C?? +4QqS>( Hb%aL 'l W$$#C7777W$$&*#)A$%?@@@'Z9(5{DJJW$$#C7777///#C7777 M,<<<<#C777_hhjj9$$bx((  IIKKKK HHQKKKKx((  IIKKKK HHQKKKK t8Os G!I>> from scipy.io.wavfile import write >>> import numpy as np >>> samplerate = 44100; fs = 100 >>> t = np.linspace(0., 1., samplerate) >>> amplitude = np.iinfo(np.int16).max >>> data = amplitude * np.sin(2. * np.pi * fs * t) >>> write("example.wav", samplerate, data.astype(np.int16)) rwbrrurzUnsupported data type '%s'r rsrrrz>HHz!}HJ'!+ yA~.x7)q.1 Y Hb%5{IOO  k )Nv{4^)<)<=== ~%   7 "K 6;uaA?? ?K  a  !c$+o 6* D D@AA A + ' &+dDK00111 : 3 & &4:+?3+F+F+.=E+A+A==??Dc4   xxzz   &+dDF++,,,x))  IIKKKKK HHQKKKKKx))  IIKKKK HHQKKKKs I3Krs           [   RRRRR'RRRj"o{'=>DDDLLL`(-\\\\~$$$"$$$.ffffR}}}@+++++r