Mgbanwe Constant-Q maka Audio
Mgbanwe Constant-Q (CQT) bụ nyocha ugboro ugboro nke na-eji bins nwere oghere dabara na ọkwa egwu, kama ịgbanye n'otu n'otu nke ọkọlọtọ Fourier mgbanwe.
Nchịkọta
It matters because it mirrors how we perceive pitch, making it ideal for music analysis where notes double in frequency each octave.
Ime miri emi
N'ime mgbanwe oge dị mkpirikpi nke anọ, a na-ekewa ọnụọgụ ugboro ugboro n'ahịrị, yabụ a na-ejikọta ihe ndetu dị ala ọnụ ebe ndetu dị elu na-enweta oke mkpebi. Egwu anaghị arụ ọrụ otu ahụ: octave ọ bụla na-agbakọ ugboro abụọ, na otu semitone bụ oke edozi, ọ bụghị ọnụọgụ hertz. CQT na-edozi nke a site na idobe oke nke ugboro etiti na bandwit, ogo ihe Q, na-adịgide adịgide n'ofe bins niile. Obere ugboro na-enweta mpio nyocha ogologo (mkpebi ugboro dị mma) na frequencies dị elu na-enweta windo dị mkpụmkpụ (mkpebi oge dị mma). Ihe si na ya pụta bụ spectrogram ebe otu ahịrị dabara na otu ụda egwu, na otu ụda ahụ yiri otu n'agbanyeghị octave ọ na-egwu na ya. Ngwongwo a na-eme ka CQT bụrụ njedebe dị n'ihu maka njirimara ụda, ederede, na nsochi pitch.
Nghọta nka nka
Constant Q pụtara ihe nzacha bandwit nke ọ bụla nwere oge etiti ya, yabụ bins niile nwere otu ọnụọgụ cents egwu. A na-edobe bins 12 ma ọ bụ 24 kwa octave iji kwekọọ na semitones ma ọ bụ ụda nkeji nkeji. N'ihi na ogologo windo na-adịgasị iche kwa bin, mmejuputa a na-arụ ọrụ nke ọma na-eji otu FFT gbakwunyere matriks kernel pere mpe karịa ịgbakọ nzacha ọ bụla iche, nke bụ ka ọba akwụkwọ dị ka librosa si eme CQT ngwa ngwa.
Mmetụta atụmatụ
Nweta na iru
Ọ na-eme ka nnweta ya dịkwuo mma site na ndegharị, ịkọ akụkọ, na ntụgharị olu.
Ọnụ ego na mmefu ego
Ndị otu mgbasa ozi nwere ike ibubata ọdịyo a na-egbu maramara ngwa ngwa site na iji obere mmefu ego.
Ọsọ na ọnụ ọgụgụ
Sistemụ na-eche ihu ndị ahịa nwere ike hazie mkparịta ụka n'ọtụtụ buru ibu.
Ọdịnihu nke mgbanwe Constant-Q maka ọdịyo
A na-ejikarị CQT eme ihe dị ka ihe nnochita ntinye maka ụdị egwu mmụta miri emi, ebe ọ bụ na nhazi ya na-adabere na ya na-eme ka netwọk ndị na-eme mgbanwe mụta ngbanwe-ọdịdị na-adịghị agbanwe agbanwe. Na-atụ anya njikọta siri ike na ọdịyo akwara ozi n'ọrụ dị ka ndegharị akpaka, nchọpụta egwu, na nkewa isi mmalite. Ngwakọ n'ihu njedebe na-ejikọta CQT na mụtara filterbanks na-apụta, na iche iche CQT n'ígwé ugbu a ka ụdị ebuli mgbanwe njikọ aka na netwọk n'oge ọzụzụ.
Mmejuputa n'ezie n'ụwa
Sistemụ njirimara ụdọ akpaaka na-esetịpụ ọnụọgụ CQT ọ bụla na klaasị olulu egwu
Ngwa ndegharị egwu na-agbanwe ndekọ piano ka ọ bụrụ egwu mpempe akwụkwọ ma ọ bụ MIDI
Nchọpụta myirịta egwu mkpuchi na egwu na-erite uru site na njirimara octave-invariant
Plọk-ịgbanwe na nchọta igodo n'ụlọ ọrụ ọdịyo dijitalụ
Ihe ize ndụ & okporo ụzọ nche
Iji olu eme ihe na ihe egwu mpụta ga-abawanye mgbe nkwenye na-efu.
Izi ezi nwere ike ịdaba n'ofe ụda olu, olumba ma ọ bụ gburugburu mkpọtụ.
Enwere ike imehie ọdịyo sịntetik dị ka ezigbo okwu na-enweghị akara doro anya.
Map mmejuputa
Nweta nkwenye doro anya maka ijide olu, imechi, na ijigharị.
Nwale ogo n'ofe ndị na-ekwu okwu dị iche iche yana ọnọdụ ndabere.
Kọwaa mgbe mmadụ ga-enyocha ma ọ bụ kwado nsonye.
Deba aha ọdịyo sịntetik ma debe ndekọ ihe ndekọ maka ịza ajụjụ.
Nọgide na-eme nchọpụta
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Ntuziaka na-esote
Nchọpụta mmalite na ọdịyo
Ajụjụ a na-ajụkarị
What is Constant-Q Transform for Audio?
Mgbanwe Constant-Q (CQT) bụ nyocha ugboro ugboro nke na-eji bins nwere oghere dabara na ọkwa egwu, kama ịgbanye n'otu n'otu nke ọkọlọtọ Fourier mgbanwe. Ọ dị mkpa n'ihi na ọ na-egosipụta ka anyị si aghọta ụda, na-eme ka ọ dị mma maka nyocha egwu ebe ndetu okpukpu abụọ na ugboro ọ bụla octave.
Kedu otu esi ekewa ọnụọgụ ugboro na mgbanwe Constant-Q?
CQT na-eji bins nwere oghere logarithmically ka nke ọ bụla dabara na nkeji oge egwu egwu, n'adịghị ka oghere ahịrị nke FFT ọkọlọtọ.
Kedu ihe 'Q' na Constant-Q na-ezo aka?
Q bụ nha nke etiti etiti nzacha na bandwit ya, yana CQT na-edobe oke a na-adịgide adịgide n'ofe bins niile.
Kedu ihe kpatara CQT ji eji mpio nyocha ogologo oge na obere ugboro?
Ndetu egwu dị ala dị ezigbo nso na hertz zuru oke, yabụ ogologo oge windo na-enye ezigbo mkpebi ugboro ole achọrọ iji kewaa ha.
Kedu uru nghọta CQT nwere maka egwu karịa spectrogram linear?
N'ihi na a na-ekewa bns site na nha ụda, ịtụgharị ụda olu octave na-agbanwe naanị usoro ahụ, na-enye mgbanwe mgbanwe octave/transposition bara uru maka ọrụ egwu.
Ole CQT bins kwa octave ka a na-ejikarị kwekọọ na semitones?
Bins iri na abụọ n'otu octave na-ejikọta bins nke ọ bụla na semitone nke ọnụ ọgụgụ chromatic Western; 24 bins na-enye mkpebi nkeji nkeji.