U -Z$d9ã@sDdZddlZddlmZddd„Zdd d „Zdd d „Zddd„ZdS)zE Various functions for finding/manipulating silence in AudioSegments éNé)Ú db_to_floatéèéðÿÿÿcCsöt|ƒ}||krgSt|ƒ|j}g}||}td|d|ƒ}||rTt ||g¡}|D](}||||…} | j|krX| |¡qX|sŠgSg} | d¡} | } |D]>} | | |k}| | |k}|sÚ|rÚ|  | | |g¡| } | } q |  | | |g¡| S)ay Returns a list of all silent sections [start, end] in milliseconds of audio_segment. Inverse of detect_nonsilent() audio_segment - the segment to find silence in min_silence_len - the minimum length for any silent section silence_thresh - the upper bound for how quiet is silent in dFBS seek_step - step size for interating over the segment in ms rr) ÚlenrZmax_possible_amplitudeÚrangeÚ itertoolsÚchainZrmsÚappendÚpop)Ú audio_segmentÚmin_silence_lenÚsilence_threshÚ seek_stepZseg_lenZsilence_startsZlast_slice_startZ slice_startsÚiZ audio_sliceÚ silent_rangesZprev_iZcurrent_range_startZsilence_start_iZ continuousZsilence_has_gap©rú1/tmp/pip-unpacked-wheel-94qg_ebr/pydub/silence.pyÚdetect_silence s>      ÿÿrc Cs¤t||||ƒ}t|ƒ}|s$d|ggS|dddkrH|dd|krHgSd}g}|D]\}} | ||g¡| }qT| |kr†| ||g¡|dddgkr | d¡|S)ay Returns a list of all nonsilent sections [start, end] in milliseconds of audio_segment. Inverse of detect_silent() audio_segment - the segment to find silence in min_silence_len - the minimum length for any silent section silence_thresh - the upper bound for how quiet is silent in dFBS seek_step - step size for interating over the segment in ms rr)rrr r ) r r rrrZlen_segZ prev_end_iZnonsilent_rangesZstart_iZend_irrrÚdetect_nonsilentLs     rédc s–dd„}tˆtƒr"ˆrtˆƒnd‰‡fdd„tˆ|||ƒDƒ}||ƒD]<\}}|d} |d} | | krF| | d|d<|d|d<qF‡fdd„|DƒS) am Returns list of audio segments from splitting audio_segment on silent sections audio_segment - original pydub.AudioSegment() object min_silence_len - (in ms) minimum length of a silence to be used for a split. default: 1000ms silence_thresh - (in dBFS) anything quieter than this will be considered silence. default: -16dBFS keep_silence - (in ms or True/False) leave some silence at the beginning and end of the chunks. Keeps the sound from sounding like it is abruptly cut off. When the length of the silence is less than the keep_silence duration it is split evenly between the preceding and following non-silent segments. If True is specified, all the silence is kept, if False none is kept. default: 100ms seek_step - step size for interating over the segment in ms cSs"t |¡\}}t|dƒt||ƒS)z$s -> (s0,s1), (s1,s2), (s2, s3), ...N)rÚteeÚnextÚzip)ÚiterableÚaÚbrrrÚpairwiseŠs z"split_on_silence..pairwisercs g|]\}}|ˆ|ˆg‘qSrr©Ú.0ÚstartÚend)Ú keep_silencerrÚ “sÿz$split_on_silence..récs,g|]$\}}ˆt|dƒt|tˆƒƒ…‘qS)r)ÚmaxÚminrr)r rrr# sÿ)Ú isinstanceÚboolrr) r r rr"rrZ output_rangesZrange_iZrange_iiZlast_endZ next_startr)r r"rÚsplit_on_silenceps   ý þr)çIÀé cCsJd}|dkst‚||||…j|kr<|t|ƒkr<||7}qt|t|ƒƒS)a Returns the millisecond/index that the leading silence ends. audio_segment - the segment to find silence in silence_threshold - the upper bound for how quiet is silent in dFBS chunk_size - chunk size for interating over the segment in ms r)ÚAssertionErrorZdBFSrr&)ZsoundZsilence_thresholdÚ chunk_sizeZtrim_msrrrÚdetect_leading_silence¦s  " r.)rrr)rrr)rrrr)r*r+)Ú__doc__rÚutilsrrrr)r.rrrrÚs  C $ÿ 6