Tweak AIFF Speed Awọn ibeere ti a maa n beere nigbagbogbo
How does Change AIFF Speed change the playback rate?
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Concretely, the time-stretch is applied to the PCM directly and written back losslessly, which is why a lossless source is the right input for anything above about 1.5x where artefacts start to show. Choose a multiplier — 0.5x for half speed, 2x for double — and the whole file is retimed.
Will speeding it up make voices sound high-pitched?
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No. The time-stretch preserves pitch, so a 1.5x speech track sounds like the same person talking faster rather than like a chipmunk. That is the difference between a proper time-stretch and simply playing the samples faster.
Does the source format affect the result?
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It does. AIFF is Apple's uncompressed PCM format — the Mac-side equivalent of WAV, same size, same fidelity. That determines whether the retimed result can be written back cheaply or has to be fully re-encoded.
Anything specific to AIFF here?
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Yes — AIFF is big-endian PCM where WAV is little-endian; the audio is equivalent, and the choice is really about which ecosystem opens it without complaint. Worth knowing before you commit to a large speed change.
How far can I push the speed before it sounds wrong?
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Roughly 0.75x to 2x is transparent for speech. Beyond about 2.5x the stretch artefacts become audible on any algorithm, and below 0.5x the reconstruction has to invent too much. Music tolerates far less than speech does.
Does the file get shorter, and does it get smaller?
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Shorter, yes, and in exact proportion — an hour of audio at 1.5x is forty minutes. The file shrinks by roughly the same proportion because there is less material to encode. The bitrate, the sample rate and the channel layout are all left exactly as they were.
Ṣe o n ṣiṣẹ lori awọn ẹrọ alagbeka
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Bẹ́ẹ̀ni, olùyípadà wa jẹ́ olùdáhùn ní kíkún ó sì ń ṣiṣẹ́ lórí àwọn fóònù alágbèéká àti àwọn tábìlẹ́ẹ̀tì. O lè yí àwọn fáìlì padà lórí iOS, Android, àti èyíkéyìí ìpìlẹ̀ alágbèéká mìíràn pẹ̀lú ẹ̀rọ aṣàwárí òde òní.
Àwọn aṣàwákiri wo ni a ṣe atilẹyin fun
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Olùyípadà wa ń ṣiṣẹ́ pẹ̀lú gbogbo àwọn aṣàwákiri ìgbàlódé pẹ̀lú Chrome, Firefox, Safari, Edge, àti Opera. A gbani nímọ̀ràn láti máa mú kí ẹ̀rọ aṣàwákiri rẹ máa ṣiṣẹ́ fún ìrírí tó dára jùlọ.
Ǹjẹ́ àwọn fáìlì mi wà ní ìkọ̀kọ̀ tí wọ́n sì ní ààbò
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Dájúdájú. Àwọn fáìlì rẹ ni a ń ṣe àgbékalẹ̀ láìléwu àti pé a ti parẹ́ láìfọwọ́sí láti ọ̀dọ̀ àwọn olùpèsè wa lẹ́yìn ìyípadà. A kì í ka, tọ́jú, tàbí pín àwọn àkóónú fáìlì rẹ. Gbogbo àwọn ìgbesẹ̀ lo àwọn ìsopọ̀ HTTPS tí a fi ìkọ̀kọ̀ ṣe.
Kí ló máa ṣẹlẹ̀ tí ìgbésókè mi kò bá bẹ̀rẹ̀
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Tí ìgbàsílẹ̀ rẹ kò bá bẹ̀rẹ̀ láìfọwọ́sí, gbìyànjú láti tẹ bọ́tìnì ìgbàsílẹ̀ náà lẹ́ẹ̀kan sí i. Rí i dájú pé àwọn ìfọ́jú tí a kò dí mọ́lẹ̀ kò dí, kí o sì ṣàyẹ̀wò fódà ìgbàsílẹ̀ ẹ̀rọ aṣàwárí rẹ. O tún lè tẹ ọ̀nà ìsopọ̀ ìgbàsílẹ̀ náà ní ọ̀tún kí o sì yan 'Fipamọ́ Bí'.
Ṣe a o pa didara naa mọ
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Dídára fídíò náà máa wà ní ipò tó yẹ nígbà tí a bá ń ṣe àtúnṣe rẹ̀. Àwọn èsì náà sinmi lórí fáìlì orísun àti ìbáramu pẹ̀lú ìrísí àfojúsùn.
Ṣe Mo nilo lati ṣẹda akọọlẹ kan
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A ko nilo akoto fun lilo ipilẹ. O le ṣe ilana awọn faili lẹsẹkẹsẹ. Ṣiṣẹda akoto ọfẹ kan yoo fun ọ ni iwọle si itan iyipada rẹ ati awọn ẹya afikun.
