Guqula i-WAV ibe ngumbhalo

Umsindo ongacindezelwe, obhalwe ngokukhululekile. Izingqungquthela zestudio, ukurekhodwa kwendawo, amafayela adala we-dictaphone - susa i-WAV, hlela umbhalo, khipha.

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Field recordersStudio sessions24-bit / 96 kHzDictaphones

WAV yinkinga yosayizi, hhayi izinkinga zobubanzi

WAV ayicindezelwanga PCM, futhi lokho kuyinto eyodwa yokuhlela: i-CD-quality stereo isebenza ngama-10 MB ngomzuzu, ngakho-ke i-100 MB i-cap engaziwa ilungele ama-9-10 imizuzu ye-stereo (imalunga ne-19 mono) — uzoshaya umkhawulo wobukhulu ngaphambili kwemizuzu engu-30. I-akhawunti emahhala iphakamisa i-cap ku-500 MB, ama-levels akhokhelwa ku-5 GB.

WAV iyifomethi eyodwa lapho ukuguqulwa ngaphambi kokufaka kusiza kakhulu. Imodeli ilalela ku-16 kHz mono ngaphakathi, ngakho umyalo ofana ne "ffmpeg -i in.wav -ar 16000 -ac 1 out.flac" ucindezela ifayela nge-10fold ngenkathi ihlala ingalahleki ngenhloso yokukhuluma — i-transcript iphuma ifana.

Kusuka estudio nasezindaweni zokurekhoda kuya embhalweni

Konke okuwumsebenzi we-WAV okhiqiza ukukhishwa kwe-decode lapha: 16- noma 24-bit, 44.1 kuya ku-192 kHz, ukusakazwa kwe-WAV kusuka kuma-recorders endawo, kanye ne-ADPCM noma i-µ-law variants yama-dictaphones adala kanye nezinhlelo zefoni ezibhale. Ukulungiswa okuphezulu akutholi ukunemba — umsindo uhlukaniswe futhi uphinde usampuliswe ngaphakathi — kodwa akusho ukuthi awubuhlungu.

Isikhathi sokufaka isingeniso siqala ngasi zero: i-BWF timecode efakwe ngaphakathignored. Uma i-WAV ikhona kuhlelo lwevidiyo, yenza i-SRT noma i-VTT lapha futhi sebenzisa umhleli wakho we-offset uma uyingenisa.

Imibuzo ebuzwa kaningi

Ingabe i-WAV engacindezelwa izoshicilela ngokunembile kunekhophi ecindezelwe?

Akungalingani. Ukunemba kusethelwe ngokufaka lutho — umgama we-mic, umsindo, ukuxoxa okuphakathi — isikhathi eside ngaphambi kokuba i-codec isebenze, futhi imodeli ikhuphula konke ku-16 kHz mono namanje. Layisha i-WAV uma lokhu kuyinto oyinayo, kodwa ungase ufune umphathi ongalahlekelwa ulindele ukudluliswa okuhle.

I-WAV yami ifinyelela umkhawulo we-100 MB ngaphambi kwemizuzu engu-30 — kungani?

I-matematics engacindezelwa: i-CD-quality stereo ilingana ne-10 MB ngomzuzu, ngakho-ke i-100 MB igcina kuphela ama-9-10 imizuzu. Izindlela ezintathu zokuphuma: i-akhawunti emahhala ikhuphula isikhala se-500 MB, ukuxubana phezulu kuya ku-mono kunciphisa ubukhulu, noma ukuguqula ku-FLAC ku-16 kHz mono — cishe i-1 MB ngomzuzu futhi ifana ne-lossless ne-model's ears.

Ingabe i-24-bit ne-96 kHz studio WAVs ixhaswe?

Yebo — yonke inhlonipho ye-bit kanye nesampula ye-FFmpeg ibhala: 16/24/32-bit, 8 kuya ku-192 kHz. Baphinde basampula ngaphakathi, ngakho-ke ukuxazulula okungeziwe akusizanga noma kubuhlungu ukudluliswa; yenza ukuthunyelwa kube mkhulu. Bounce a 16-bit/44.1 kHz or mono copy if size is the bottleneck.

Ingabe i-stereo ne-multi-channel WAVs iphathwa kanjani?

Ama-channels ahlukaniswa abe mono ngaphambi kokufaka. Kulungile uma wonke ama-channel afaka igumbi elifanayo — kodwa uma umshicileli wakho efaka abantu abahlukene ema-channels ahlukene (lav ekhohlo, boom ekunene), hlukanisa ama-channels futhi ubhale amafayela ahlukene; uzothola umbhalo ohlanzekile umuntu ngamunye kunanoma iyiphi i-downmix.

Ingabe ukusakazwa kwe-WAV (BWF) timecode kuletha ku-transcript?

Hayi — i-BWF timecode efakwe ngaphakathi kanye nama-cue markers athathwa kabi, futhi ama-timestamps we-transcript aqala ku-0:00 kusuka engxenyeni ephezulu yefayela. Uma ukurekhodwa kuhlobene nokulungiswa kwevidiyo okuxhunywe, khipha i-SRT noma i-VTT lapha futhi uvumele isofthiwe yakho yokuhlela isebenzise i-offset ekungenisweni.

I-WAVs yama-dictaphone nama-telephony adala (ADPCM, µ-law) - ixhaswe?

Yebo. I-FFmpeg ifaka ikhodi le-WAV ekhona — ADPCM, µ-law/A-law, GSM — esebenzisa i-hardware yokuchaza futhi isebenzisa amasistimu efoni. Ulindele ukulahlekelwa okuningi kunalokho okurekhodiwe okwamanje: lezi fomu ziyi-8 kHz narrowband, ngakho-ke amagama nezimo ezishisayo zidinga ukudluliswa kumhleli. Kuzoqhubeka nokushaya kabusha i-teep.