History nke ígwè okwu

A na igwe okwu, okwu, ma ọ bụ ọkà okwu usoro bụ ihe electromechanical transducer na-atọghata ihe ọkụ mgbaàmà. The okwu okwusike nwere ike na-ezo aka onye na ngwaọrụ ma ọ bụ ọkwọ ụgbọala, na a zuru usoro esịnede ihe Herọd corporating otu ma ọ bụ karịa ndị ọkwọ ụgbọala ndị ọzọ na ngwá electronic.

Ígwè okwu ndị kasị agbanwe ọcha ọ bụla ọdịyo usoro, na-ahụ maka akara audible ọdịiche dị n'etiti uzọ ọzọ yiri ụda usoro. Okwusiike arụmọrụ ma ọ bụ izi ezi na reproducing a mgbaàmà enweghị agbakwunye distortion bụ budata daa ogbenye karịa nke ọzọ audio equipments.

Ụfọdụ dị mkpa ndị na-mere n'akụkọ ihe mere eme

Ernst W. Siemens bụ nke mbụ na-akọwa na ike ma ọ bụ na-akpụ akpụ eriri igwe transducer, na a okirikiri eriri igwe waya na a ndọta na-akwado nke mere na ọ nwere ike ịkpali axially. Ọ gbara akwụkwọ ya US patent ngwa n'ihi na a Magneto electric ngwa maka inweta n'ibu ije nke ihe ọkụ eriri igwe site eletriki okwukwo-ebute site ná site na ya e nyere patent No.149797 on April 14, 1874.

Oliver Lodge gbara akwụkwọ maka British patent No.9712 on Apr. 27, 1898, maka mma okwusike na nonmagnetic spacers na-ikuku ọdịiche dị n'etiti na n'ime na elu okporo osisi nke a na-akpụ akpụ eriri igwe transducer. Nke a bụ otu ihe ahụ afọ, ọ na-etinyere maka a patent na ya a ma ama radio tuner.

Thomas Edison e nyere a British patent n'oge 1881, maka a usoro eji abịakọrọ ikuku dị ka ihe ana-akọwa usoro ya n'isi cylinder ígwè phonograph, ma ọ n'ikpeazụ biri maka maara metal mpi chụpụrụ site a akpụkpọ ahụ mmasị ka mkpịsị.

Harold Arnold gburugburu 1925 malitere usoro ihe omume na Bell Labs mma phonographic ndekọ olu. The mbụ kacha mkpa bụ electronic ampilifaya iji ọhụrụ agụụ tube, nke abụọ bụ okwu, na atọ bụ na okwusike nke ga-melite ezi armature nkeji mepụtara maka okwu ihu ọha.

Bell Laboratories 1931 mepụtara abụọ ụzọ ígwè okwu, na-akpọ kewara nso maka ngosipụta site Ha Frederick nke ekwesị bee ndia. The elu frequencies na-anọchi a obere mpi a ugboro omume nke 3000 na 13,000 Hz, na ala frequencies site a 12 inch ike cone kpọmkwem okpomọkụ ahụ unit na a ugboro ole omume n'ime 5db site 50 ruo 10,000 Hz.

Otú ígwè okwu na-eji na-arụ ọrụ

The mbụ ígwè okwu na-eji electromagnets n'ihi nnukwu, ike na-adịgide adịgide nju ndị adịghị na ihe ezi uche na-eri.

The eriri igwe nke ihe electromagnet, a na-akpọ a ubi eriri igwe, e nyere ike nke ugbu a site na a abụọ ụzọ nke na ndị ọkwọ ụgbọala. Nke a asọfe-emekarị na-eje ozi a sọrọ ọrụ, eme kwa ka a ịkpagbu eriri igwe nzacha na ike ọkọnọ nke ampilifaya nke nkwuputa ụda e ejikọrọ.

AC ripple na nke ugbu a na-attenuated site n'oru nke agafe ịkpagbu eriri igwe. Otú ọ dị, AC akara frequencies yiri ka modulate ọdịyo mgbaàmà a na-zitere n'olu eriri igwe na kwukwara na audible hum nke a kwadoro elu ụda amụba ngwaọrụ.

Ogo nke okwusike usoro ruo mgbe 1950s, site na oge a na ụkpụrụ, ogbenye. Na-aga n'ihu na nmepe nke Herọd imewe na ihe mere ka ndị dị ịrịba ama audible ndozi. The kasị dị ịrịba ama oganihu n'oge a na-ekwu okwu na-oganihu cone ihe, iwebata elu okpomọkụ adhesives, mma na-adịgide adịgide magnet ihe, mma n'ihe usoro, kọmputa aided imewe na oke mmewere analysis.