ExpEYES/C3/Characteristics-of-Sound-Waves/Khasi

Time	Narration
00:01	Khublei. Ngi pdiangsngewbha iaphi sha ka jinghikai halor ka Characteristics of Sound Waves.
00:08	Ha kane ka jinghikai, ngin ia pule: Kumno ban generate ia ka sound wave, frequency response jong ka sound source, Kumno ban khein ia ka velocity jong ka sound, interference bad beats jong ki sound waves, forced oscillations jong ka sound source.
00:29	Bad ban pyni ia ki: Xmgrace plots, Fourier Transforms bad Circuit diagrams jong ki experiments jong ngi.
00:38	Hangne, nga pyndonkam da ka: ExpEYES version 3.1.0, Ubuntu Linux OS version 14.10.
00:49	Ban bud ia kane ka jinghikai, phi dei ban don ia ki jingtip shaphang ka ExpEYES Junior interface. Lada phim don, na ka bynta ka jinghikai ba iadei, sngewbha leit sha ka website jong ngi.
01:01	To ngin ia sdang nyngkong da ka definition jong ka sound. Sound kadei ka vibration kaba mih kum ka audible mechanical wave jong ka pressure bad displacement.
01:13	Ka donkam ia ka medium ban pynmih eiei. Ka medium ka lah ban long ka lyer, ka um lane kano kano ka metal surface.
01:22	Ha kane ka jinghikai, ngin ia leh ia bun ki experiments ban pyni ia ka jinglong jingman jong ki sound waves.
01:30	To ngin ia leh ia ka experiment ban pyni ia ka frequency jong ki sound waves.
01:35	Ha kane ka experiment, ground(GND) lah connect sha kaPiezo buzzer (PIEZO). Piezo buzzer (PIEZO) lah connect sha ka SQR1.
01:44	Microphone (MIC) lah connect sha u A1. Hangne, Piezo buzzer(PIEZO) kadei ka tynrai jong ka sound. Kane kadei ka circuit diagram.
01:55	To ngin ia peit ia ka result ha ka Plot window.
01:59	Ha ka Plot window, hapoh Setting Square waves, ka set ia ka frequency kum 3500Hz.
02:07	Nion ha SQR1 check-box. Frequency jong u SQR1 lah set sha u 3500Hz. Ka digitized sound wave lah pynmih.
02:20	Pyn kynriah ia ka frequency slider ban pynkylla ia ka waveform.
02:27	Nion ha SQ1 bad tan sha u CH2. Input data jong u SQ1 lah assigned sha u CH2. U square wave lah pynmih.
02:40	Tan ia u mSec/div slider ban set ha ka compressions bad rarefactions.
02:48	Nion ha u CH2 bad tan sha u FIT. Voltage bad frequency jong u SQ1 lah pyni ha ka liang kamon.
02:59	Pyniaid ia u frequency slider ban set ha ki sound waves.
03:04	Sound wave ba lah pynmih da ka Piezo buzzer lah pyni ha ka rong iong.
03:10	Amplitude jong ka wave ka kylla katba ka Piezo buzzer ka iaid shajan bad sha jngai na u MIC
03:19	Mynta, ngin ia batai ia ka frequency response jong ka Piezo buzzer.
03:24	Ha ka Plot window nion ha u EXPERIMENTS button. Select Experiment list ka plie. Nion ha u Frequency Response na ka list.
03:39	Ar tylli ki windows ba thymmai Audio Frequency response Curve bad Schematic ka plie. Schematic window ka pyni ia ka circuit diagram jong ka experiment.
03:52	Ha ka Audio Frequency response Curve window, nion ha u START button.
03:59	Frequency response jong ka Piezo buzzer lah set. Frequency response kadon ia ka maximum amplitude ha ka 3700Hz.
04:11	Ha kajuh ka window, nion ha u Grace button. Grace window ba plie ka pyni ia ka Frequency response Curve.
04:22	Mynta, ngin ia thew ia ka velocity jong ka tynrai jong ka sound.
04:27	Ha ka Plot window, nion ha u EXPERIMENTS button. Select Experiment list ka plie. Nion ha u Velocity of Sound na ka list.
04:41	Ar tylli ki windows ba thymmai EYES Junior: Velocity of Sound bad Schematic ka plie. Schematic window ka pyni ia ka circuit diagram jong ka experiment.
04:55	Ha ka EYES Junior: Velocity of Sound window, nion ha u Measure Phase button.
05:02	Ngi lah ban iohi bun jait ki Phase values da kaba pynkylla ia ka jing jngai hapdeng u MIC bad u Piezo buzzer.
05:11	Nion Measure Phase button ban iohi ia bun jait ki Phase values.
05:16	Na bun tylli ki Phase values, ngin ia pyndonkam ia u 178 deg bad 106 deg ban khein ia ka velocity jong ka sound.
05:28	Ngi lah ban ioh ia kine ki values ynda kaPiezo la buh hajan bad 2cm jngai na u MIC.
05:37	Ban ioh ia ki results kiba biang, pynthikna ba u MIC bad ka Piezo buzzer lah buh ha ujuh u axis.
05:45	Ban khein ia ka value jong ka velocity of sound, ngi don ia ka formula kumba la pyni. Velocity jong ka sound ba la ioh na ka experiment kadei 350m/sec.
05:59	Kum ka assignment, khein ia u value jong ka wavelength jong ka sound. Formula: λ= v/f(Lambda = v upon f).
06:09	Mynta, ngin batai ia ka: Interference, Beats, Xmgrace plot bad Fourier Transform jong ar tylli ki tynrai jong ka sound.
06:20	Ban pyni ia ka Grace plots ha ki experiments,
06:23	Pynthikna ba phi lah installed ia ka: python-imaging-tk, grace, scipy bad python-pygrace ha ka system jong phi.
06:34	Ha kane ka experiment, ngi pyndonkam ar tylli ki Piezo buzzers kum ka tynrai jong ka sound.
06:41	Ha kane ka experiment, Piezo 1 lah connect sha ka SQR1 bad ground(GND). Piezo 2 lah connect sha ka SQR2 bad ground(GND). Kane kadei ka circuit diagram.
06:56	To ngin ia peit ia ka result ha ka Plot window.
07:00	Ha ka Plot window, set ia ka frequency kum 3500Hz.
07:06	Nion ha u SQR1 bad SQR2 check-boxes. Frequency jong u SQR1 bad SQR2 lah set sha “3500Hz”.
07:20	Ka digitized sound wave lah pynmih.
07:24	Pyniaid ia ka frequency slider ban pynkylla ia ka waveform.
07:29	Nion ha u EXPERIMENTS button bad jied Interference of Sound. EYES: Interference of Sound window ka plie.
07:39	Ha trai jong ka window, pynkylla ia ka NS, kata, number of samples value sha 1000.
07:48	Nion ha u SQR1 bad SQR2 check-boxes. Nion ha u START button. Ngi iohi ia kaInterference pattern.
08:00	Mynta, nion ha u Xmgrace button. Ka window ba thymmai ka plie ryngkat u Grace pattern.
08:08	Mynta, ngin pyni ia ka Beats pattern.
08:11	Nion ha u EXPERIMENTS button bad jied Interference of Sound. EYES: Interference of Sound window ka plie.
08:20	Ha trai jong ka window, nion ha u SQR1 bad SQR2 check-boxes.
08:28	Nion ha u START button. Beats pattern kapaw.
08:33	Mynta, nion ha u Xmgrace button. Ka window ba thymmai ka plie bad ka Grace pattern.
08:42	Nion ha u FFT. Ka window ba thymmai ka plie bad ka Fourier Transform.
08:49	Ban tip kham bun shaphang kaFourier Transform , sngewbha leit sha kane ka webpage. https://en.wikipedia.org/wiki/Fourier_transform.
08:55	To ngin ia leh ia ka experiment ban pyni ia ka low frequency sound wave. Kane kadei ka circuit diagram.
09:03	Nion ha u EXPERIMENTS button bad jied Interference of Sound. EYES: Interference of Sound window ka plie.
09:13	Ha trai jong ka window, set ia u value jong ka SQR1 sha 100 bad check ia ka box.
09:21	Nion ha u START button, ka low amplitude wave ka lah paw.
09:29	Nion ha u FFT ban ioh ia ka Grace plot jong ka Fourier Transform.
09:34	To ngin ia batai kyllum.
09:36	Ha kane ka jinghikai, ngi lah pule: Kumno ban generate ia ka sound wave, Frequency response jong ka sound source, Kumno ban khein ia ka velocity jong ki sound waves, Interference badBeat pattern jong ka sound waves, forced oscillations jong ka tynrai jong ka sound.
09:56	Bad, ngi lah pyni ia ka: Xmgrace plots, Fourier Transforms bad Circuit diagrams na ka bynta ki experiments jong ngi.
10:04	Kum ka assignment- Capture ia ka sound burst Hint: Ka bell lane ka jingthap kti lah ban pyndonkam kum ka tynrai jong ka sound. Kane kadei ka circuit diagram.
10:15	Kane ka video ka kyllum lang ia ka Spoken Tutorial project. Lada phim don ia ka bandwidth kaba biang, phi lah ban shu download bad peit ia ka.
10:24	Ngi pynlong ia ki workshops da kaba pyndonkam ia ki Spoken Tutorials bad ai certificates. Sngewbha contact sha ngi.
10:32	Ia ka Spoken Tutorial Project lah bei tyngka da ka NMEICT, MHRD, Sorkar India.
10:40	Ia kane ka jinghikai lah noh synniang da U Pdiangburom na Shillong. Khublei shibun.

Contributors and Content Editors

Mousumi, Pdiangburom