Music systems: active acoustics

Mloog koj nyiam cov suab paj nruag compositions performers, tsis yog leej twg xav tias hais txog cov xov tooj txuam nrog rau Hertz, decibels, watts, zaus, thiab txawm nrog lub CED. Txawm li cas los, nws yog los ntawm lawv yog nyob rau hauv lub purity ntawm lub playback, ntim thiab suab saturation. Nws tsis yog tau los hais tiag tiag hais tias cov feem ntau haib - nws yog qhov zoo tshaj plaws active tham.

Nta ntsuas ntawm tib neeg lub rooj sib hais thiab hais lus

Suab hu ua cov neeg kho tshuab deeg ntsiab lub cev nruab nrab muaj peev xwm ua rau muaj mob tej yam ncus rau hauv tib neeg lub hlwb. Cov hais tawm tshaj tawm los ntawm cov tsis yog nyob ntawm seb cov kev ceev ntawm dej, ntoo, hlau, los yog huab cua, nyob rau hauv uas lawv yuav mus. Zaum tau qhia hais tias cov neeg paub mloog xwb ib co ntawm cov suab frequencies ntawm 20 Hz rau 22 kHz. Lub sab cheeb tsam ntawm lub ntau yam - nws infravolny (tsawg heev), cov sab saum toj - ultrasounds (siab dhau heev lawm). Raws li nws yuav ntshiab tawg nrog qhov tseem ceeb tshaj los yog tsawg tshaj li tus lej tom qab ntawm cov ntaub ntawv, peb lub pob ntseg yog lub cev tsis tau hnov.

Music thiab qhov tseeb technology

Cov yooj yim npaum li cas ntawm suab-tshuab kws txawj muab faib ua 3 pawg.

Tus thawj yog qhov thiaj li hu ua "point" hais lus, txhais lus kev hais lus los yog cov suab paj nruag nyob rau hauv tib txoj kev coj.

Qhov thib ob pab pawg neeg no muaj xws li emitters system tshuab raj yog qhia rau ib tug kev pab aav: txoj kev los yog cheeb tsam.

Qhov thib peb qeb muaj xws li active hais lus, lub kaw lus ntawm muab faib rau ntawm lub suab qhov chaw nyob rau hauv ib tug ob peb kab lus no:

• Tsuas yog nyob rau hauv thaum uas tig mus phab ntsa;
• rau ib phab ntsa;
• lub qab nthab thiab phab ntsa;

hi-fi hais lus tawm active siv thiab sab nraum zoov scenes, ob qho tib si nyob rau hauv tsev thiab nyob rau hauv kaw chav.

Yog nws muaj tseeb hais tias cov haib tshaj cov lus, lub louder lub suab paj nruag suab?

Qhov zoo tshaj plaws active hais lus yooj yim tsis pub cov pw tsaug zog thiab so tsev neeg deafening songs. Txawm li cas los, tus nqi ntawm lub hwj chim muaj dab tsi ua nrog nws. Qhov no yog yus muaj los ntawm ib tug es txhua yam kev ntseeg ntawm lub system: cov saum toj no cov nuj nqis - yuav khiav lawm. Thiab lub amplifier hwj chim yuav tsum tau yuav tsawg tshaj li lub hwj chim ntawm cov lus qhia, txwv tsis pub lub suab paj nruag yuav tsis sai sai, raws li cov hais lus tej zaum yuav overheat thiab hlawv.

Nyob rau hauv kev muaj tiag, nyob rau hauv playback ntim tsis cuam tshuam rau lub zog thiab rhiab heev ntawm lub puab, raws li ntsuas los ntawm decibels. 85 dB Index yog heev haum rau cov suab paj nruas khoom nyob rau hauv lub chav tsev.

Ib qho tseem ceeb parameter yog lub Performance index ntawm lub zaus. Self hais lus (active los yog passive) yuav tsum muaj nyob rau hauv kem LF thiab HF, thiab midrange loudspeakers. Lub xub ntiag ntawm lub tag nrho zaus spectrum ntawm cov suab paj nruag yuav ua rau nws noo thiab mloog yuav coj ib tug ntau ntawm kev lom zem.

"Txaij" system - dab tsi yog ib tug dag!

Nyob rau hauv qhov tseeb, active hais lus, raws li tau zoo raws li passive, muaj tsis muaj banding, thiab cov banding. Yog hais tias lub chav tsev muaj no tsuas muaj ib cov lus qhia - yog ib tug kab xwb los yog ib tug broadband suab, ob tug (ib tug ntses bass thaj tsam thiab midrange, thiab ib tug nrog ib tug high school cov zaus) - ib tug ob-kab. Sophisticated melomaniacs tau rau nws tus kheej peb, plaub thiab txawm tsib-band suab systems nyob rau hauv uas ib sab yog txawm peem rau nrog beepers muab ib tug neeg lub suab ntau. Ib tug feature tshwj xeeb ntawm multiband tshuab yog muaj cov ua-nyob rau hauv cov ntxaij lim dej uas tsim pheej yig tib neeg pob ntseg suab tawg.

Active acoustic hi-fi feem ntau muaj ib tug lub ntsiab chav tsev thiab ib tug ntses bass thaj tsam subwoofer hais lus ob peb me me - satellites.

Los ntawm kev yuav khoom ib tug npaj txhij system, koj yuav tsum xyuam xim rau cov tiav ntawm lub teeb. Nws yuav tsum muaj xws li cov khoom xws li:

• + Subwoofer loudspeaker;
• paired pem hauv ntej thiab nram qab lub hais lus;
• central tsev nrog ib tug loudspeaker.

Active acoustics rau tsev ua yeeb yam yuav tsum tau nruab nrog ib tug rear channel. Qhov no yuav tsim ib cov nyhuv ntawm tag nrho cov immersion nyob rau hauv lub suab ib puag ncig.

Ntoo los yog yas?

Xaiv ib tug music system, them mloog mus rau kev tsim kho ntawm lub cev cov ntaub ntawv uas txhua. Niaj hnub nimno active sab nraum zoov hais lus feem ntau muab tso rau hauv ib lub thawv hom fazoinventornogo. siv li ntoo thiab yas rau qhov siv thiab ua cov lus cev. Nws yog zoo dua yog tias lub tsev muaj ib qho lus zoo, tsis muaj chaw dim pa qhib thiab nrog ib tug zoo kev sib tw pob qij txha. Lub downside ntawm yas mob xa mus rau rattle nrog ib tug tseem ceeb strengthening ntawm lub ntim, lub distortion suab. Yog li ntawd, ib tug ntau loj system tshaj hais lus rau computers, manufacturers yog feeb fej nyob rau hauv ib tug robust ntoo thawv.

Yuav ua li cas mus rau qhov chaw cov khoom nyob rau hauv lub chav tsev tus hais lus?

Zoo zoo mloog suab paj nruag muaj chaw uas hais tias tau li nram qab no yooj yim uas yuav tsum tau:

• cov tsis muaj "fluttering" zab thiab lub zos concentration ntawm lub suab;
• niaj hnub zoo li muab faib rau cov suab zog nyob ib ncig ntawm lub chav tsev ntim;
• minimization ntawm cov suab nrov.

Npaj ib chav tsev kom haum raws li zvukotransliruyuschih pab kiag li lawm, nws yog ib qho tseem ceeb yuav tau nco ntsoov tias lub saum npoo ntawm qhov opposite phab ntsa yuav tsum yuav zoo kawg nkaus du thiab thaum uas tig mus. Txwv tsis pub, lub suab yuav thaws rov los los ntawm lawv, zoo li ib lub pob, txoj kev kom cov nyhuv ntawm ib tug pheej ncha uas puv ib suab paj nruas muaj pes tsawg leeg nyob rau hauv ib tug tas mus li nrov hum nrog phonetic failures. Niches, Pilasters, ntaub phuam npog ntsej muag yog heev haum rau tsim diffuse rog xav txog thiab txoj kev txhim kho ntawm diffuseness.

Yog hais tias tus tswv hlub mus hu nkauj karaoke, yuav tsum xav txog qhov kev tso kawm ntawm tus microphone nyob rau hauv lub chav tsev. Nws yog ib qho tseem ceeb mus rau qhov chaw nws nyob rau hauv xws li ib tug txoj kev raws li kom tsis txhob self-excitation amplifiers. Txwv tsis pub, es tsis txhob hu nkauj tau mloog mus rau lub creaking thiab screeching loudspeakers.

Thaum lub active hais lus yog muab tso rau hauv ib tug npaj txoj kev, lub suab zoo raws li lub stated kev kawm thiab xa cov zoo heev mloog.