AMR ndiyo codec yemashoko yakagadzirirwa kuburitsa mashoko uye kufona, izvo zvinoita kuti midhiya iite seyakaipa.
Mashandisirwo Akajairika
Voice recordings
Mobile audio
Telephony
AMR Mibvunzo Inowanzo bvunzwa Nezvekuchinja
Chii chinonzi AMR audio file?
+
AMR i narrow-band mashoko codec yakatanga kushandiswa ne 2G / 3G mobile networks. AMR anotora kunzwisisika mashoko pabitrates yakanyanya kuderera uye inowanzoitika mu voicemail kutumira kunze, Push-to-kutaura rekodhi, uye older feature-foni mashoko memos. AMR inoita kuti kurekodha kwemashoko kuite sekunge kuri nyore kwazvo – nguva imwe chete yekutaura inotora megabytes mashoma – uye ndiyo inoita kuti mafoni akawanda arambe achirekodha mafoni.
Ndezvipi zvakaipa zvakaitika mu AMR faira?
+
Chii chacho chaive chisiripo, uye hachigone kudzoserwa. AMR chinomanikidza nekuisa zvinhu zvinokanganisa pfungwa - mashoko akachena ari pasi pemashoko akasimba, mafrequencies ari panzvimbo yekunzwa - uye kubvisa zvakaipa. Pa bitrate yakachengeteka iyo isiri kutaurwa nevanhu vese. Chii chisina kunaka chinogona kudzoserwa, saka kushandura kuita lossless format kunochengeta mamiriro ezvinhu azvino kupfuura kudzosera zvakaipa. AMR i narrowband speech codec ichiita pakati pe4.75 ne12.2 kbps, ichifananidza munhu wechivanhu nechivanhu, asi kwete nezvose zvinotaurwa nezvokutaura.
Nei yangu AMR rekodhi ichinzwa yakaderera kana ichienzaniswa nemusiyano?
+
Nekuti haisisiri yakavakirwa kutakura mimhanzi. AMR i narrowband speech codec yakagadzirwa yemobile networks, yakagadzirirwa kuchengeta mazwi anonzwisisika pa bitrate inofungidzirwa mu kilobits ane dhigirii rimwe chete. Zvese zviri kunze kwesimba remunhu rinenge richiparadzwa panguva yekutora. Kushandura kuita full-range format kunochengeta kurecording kunogona kushandiswa chero kupi, asi hazvigone kuwedzerazve frequencies dzisina ku sampled. AMR inoravira ndangariro: 8 kHz bandwidth yake inoravira zvese zviri pamusoro pefoni frequencies, uye hapana mari yekudzokorora-kunyora zvinozoidzosera.
Ndeapi ma AMR mafaera anobva kupi?
+
Voicemail systems, push-to-talk radios, older handset and telephony recording — anywhere audio had to travel over a narrow, expensive channel. That heritage explains both why the files are tiny and why they sound the way they do. Converting makes them play in ordinary software; it does not, and can’t, add fidelity the capture never had. AMR i Adaptive Multi-Rate, 3GPP mutauro codec standardized for GSM mashoko kufona uye mobile voice recorders.
Nei yangu AMR faira ichionekwa pasina zita remufananidzo kana chifananidzo?
+
Nekuti mutauro hauna nzvimbo yekuchengeta mazita aya. AMR yakanyorwa pamusoro pezwi, pasina nzvimbo yezita, album kana mufananidzo wechiso, saka vatambi vanoramba vachiratidza zita refaira. Kushandura mutauro kune akanyorwa mazita anoita kuti mabhuku akwanise kushanyira — mazita anonyorwa panguva yekushandura, kwete pakupera kwebasa, saka funga kuti uchazoda kuisa chero chinhu chisina kunyorwa mutauro.
Ndinofanira kuchengeta mavhidhiyo se AMR?
+
Kunyangwe kana chimwe chinhu chichida kuitwa. Mufananidzo unoramba uchivhura, uye hapana kuomarara nezvekushandura archive iyo haisi kukonzera dambudziko, asi haisi kusvikira ikozvino uko kugadzirwa kwezvinhu kana kugadzikana kunoenda. Kuti uwane chero chinhu chitsva, mufananidzo wenguva yese hauna kudhura chero chinhu chitsva uye unodzivirira kusangana nenyaya iyi munguva pfupi iri kutevera.
Nei faira AMR risingatamba mubrowser yangu?
+
Mabhurawuza anodecoding a short, fixed list of audio formats and AMR is outside it, so the file downloads instead of playing or the player simply reports a error. Desktop software with a wider codec set opens it without trouble. If the audio has to play on a web page, converting it is the fix — no player configuration will add a decoder the browser does not ship.
Ndeipi bitrate inofanira kushandurwa kune yangu AMR faira?
