Dab tsi yog qhov sib txuas ntawm spectrogram thiab daim ntawv suab paj nruag?
Dab tsi yog qhov sib txuas ntawm spectrogram thiab daim ntawv suab paj nruag?

Video: Dab tsi yog qhov sib txuas ntawm spectrogram thiab daim ntawv suab paj nruag?

Video: Dab tsi yog qhov sib txuas ntawm spectrogram thiab daim ntawv suab paj nruag?
Video: Txoj kev ua laib thaum kawg tsis tshuav dab tsi 3/23/2023 2024, Hlis ntuj nqeg
Anonim

A spectrogram siv cov xim pixels rau qhia qhov chaw tone; ntev yog qhia los ntawm ntau pixels hauv a txuas sijhawm kab. Ntawv nkauj qhia nrov nrov ntawm cov ntawv sau, whereas a spectrogram qhia nrov nrov ntawm cov xim.

Tib neeg kuj nug, dab tsi yog qhov spectrogram qhia?

A spectrogram yog ib txoj kev pom kev uas sawv cev rau lub teeb liab lub zog, los yog "loudness", ntawm lub teeb liab lub sij hawm ntawm ntau zaus tam sim no nyob rau hauv ib qho kev waveform.

Tsis tas li ntawd, spectrogram Matlab yog dab tsi? spectrogram suav lub sijhawm luv luv Fourier hloov ntawm lub teeb liab. Cov spectrogram yog qhov loj ntawm qhov haujlwm no. S = spectrogram (x) rov qab cov spectrogram ntawm input signal vector x.

Ib yam li ntawd, tej zaum koj yuav nug tias, lub spectrogram tsim li cas?

A spectrogram yog qhov pom kev sawv cev ntawm lub spectrum ntawm frequencies ntawm lub teeb liab raws li nws txawv nrog lub sij hawm. A spectrogram tuaj yeem yog tsim tawm los ntawm ib qho kev kho qhov muag spectrometer, ib lub txhab nyiaj ntawm band-pass lim, los ntawm Fourier hloov los yog los ntawm ib tug wavelet transform (nyob rau hauv cov ntaub ntawv no kuj hu ua ib tug scaleogram).

Dab tsi yog formants thiab harmonics?

Harmonics raug suav hais tias yog lub hauv paus ntawm lub suab. Cov qauv tuaj ntawm lub suab. Cov huab cua hauv lub suab vibrates ntawm qhov sib txawv nyob ntawm nws qhov loj thiab qhov qhib. Peb hu cov suab no cov qauv . Koj tuaj yeem hloov qhov cov qauv nyob rau hauv lub suab los ntawm kev hloov qhov loj thiab cov duab ntawm lub suab tract.

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