工(gong)(gong)業(ye)(ye)音頻(pin)設(she)(she)備(bei)(bei)（如(ru)(ru)工(gong)(gong)廠廣(guang)(guang)(guang)播系統、工(gong)(gong)業(ye)(ye)警報器、戶(hu)外(wai)公共廣(guang)(guang)(guang)播）對功(gong)放芯(xin)(xin)(xin)片(pian)(pian)(pian)(pian)(pian)的(de)要求(qiu)與消費類設(she)(she)備(bei)(bei)有明(ming)顯(xian)差異(yi)，需(xu)滿足高可(ke)靠(kao)性(xing)(xing)、寬環(huan)境適(shi)應性(xing)(xing)、長(chang)壽命的(de)特殊需(xu)求(qiu)。首先，工(gong)(gong)業(ye)(ye)環(huan)境中(zhong)存在(zai)強電磁干(gan)擾(rao)、粉塵(chen)、濕度變(bian)化大(da)等(deng)問題，功(gong)放芯(xin)(xin)(xin)片(pian)(pian)(pian)(pian)(pian)需(xu)具(ju)備(bei)(bei)高電磁兼容性(xing)(xing)（EMC），通(tong)過(guo)優化芯(xin)(xin)(xin)片(pian)(pian)(pian)(pian)(pian)內部布線、增加屏蔽層，減少外(wai)界干(gan)擾(rao)對芯(xin)(xin)(xin)片(pian)(pian)(pian)(pian)(pian)工(gong)(gong)作(zuo)(zuo)的(de)影響；同時(shi)，芯(xin)(xin)(xin)片(pian)(pian)(pian)(pian)(pian)需(xu)采(cai)用防塵(chen)、防潮的(de)封裝(zhuang)形式（如(ru)(ru) IP65 防護等(deng)級封裝(zhuang)），確(que)保在(zai)惡劣環(huan)境中(zhong)正常工(gong)(gong)作(zuo)(zuo)。其次，工(gong)(gong)業(ye)(ye)音頻(pin)設(she)(she)備(bei)(bei)常需(xu)長(chang)時(shi)間(jian)(jian)連續運行（如(ru)(ru)工(gong)(gong)廠廣(guang)(guang)(guang)播系統需(xu) 24 小時(shi)待機），功(gong)放芯(xin)(xin)(xin)片(pian)(pian)(pian)(pian)(pian)需(xu)具(ju)備(bei)(bei)高穩定性(xing)(xing)與長(chang)壽命，廠商會(hui)通(tong)過(guo)選用高可(ke)靠(kao)性(xing)(xing)的(de)半導(dao)體材料、優化芯(xin)(xin)(xin)片(pian)(pian)(pian)(pian)(pian)的(de)熱設(she)(she)計，確(que)保芯(xin)(xin)(xin)片(pian)(pian)(pian)(pian)(pian)在(zai)長(chang)期工(gong)(gong)作(zuo)(zuo)中(zhong)性(xing)(xing)能無(wu)明(ming)顯(xian)衰減，平均無(wu)故(gu)障(zhang)工(gong)(gong)作(zuo)(zuo)時(shi)間(jian)(jian)（MTBF）需(xu)達到 10 萬(wan)小時(shi)以(yi)上。此(ci)外(wai)，工(gong)(gong)業(ye)(ye)音頻(pin)設(she)(she)備(bei)(bei)的(de)輸出功(gong)率(lv)需(xu)求(qiu)差異(yi)較大(da)，從幾(ji)十瓦(wa)(wa)的(de)車間(jian)(jian)廣(guang)(guang)(guang)播到幾(ji)百瓦(wa)(wa)的(de)戶(hu)外(wai)高音喇叭，功(gong)放芯(xin)(xin)(xin)片(pian)(pian)(pian)(pian)(pian)需(xu)具(ju)備(bei)(bei)靈活的(de)功(gong)率(lv)配(pei)(pei)置能力，部分工(gong)(gong)業(ye)(ye)功(gong)放芯(xin)(xin)(xin)片(pian)(pian)(pian)(pian)(pian)支(zhi)持(chi)(chi)多檔(dang)位功(gong)率(lv)調節(jie)（如(ru)(ru) 20W/50W/100W 三檔(dang)位），可(ke)根據(ju)實(shi)際負載需(xu)求(qiu)切換，提升能源利用效率(lv)。杰理(li) AC6956A 芯(xin)(xin)(xin)片(pian)(pian)(pian)(pian)(pian)支(zhi)持(chi)(chi)藍牙 5.4，低功(gong)耗設(she)(she)計適(shi)配(pei)(pei)長(chang)時(shi)間(jian)(jian)使用場景。貴州國產(chan)芯(xin)(xin)(xin)片(pian)(pian)(pian)(pian)(pian)ATS3005

    近年來，功(gong)(gong)(gong)(gong)(gong)(gong)放(fang)(fang)芯(xin)(xin)(xin)片(pian)(pian)(pian)呈現(xian)出明顯的(de)(de)(de)數(shu)字(zi)化(hua)發(fa)展(zhan)趨勢(shi)，各類技(ji)術(shu)創新(xin)不斷推動(dong)其性(xing)能(neng)升級。一(yi)方面(mian)(mian)，數(shu)字(zi)信(xin)號處理(li)（DSP）技(ji)術(shu)與功(gong)(gong)(gong)(gong)(gong)(gong)放(fang)(fang)芯(xin)(xin)(xin)片(pian)(pian)(pian)的(de)(de)(de)融合日(ri)益緊密，廠商(shang)在(zai)功(gong)(gong)(gong)(gong)(gong)(gong)放(fang)(fang)芯(xin)(xin)(xin)片(pian)(pian)(pian)中集(ji)成(cheng) DSP 模(mo)塊，可(ke)(ke)(ke)實現(xian)更豐富的(de)(de)(de)音(yin)效(xiao)(xiao)處理(li)功(gong)(gong)(gong)(gong)(gong)(gong)能(neng)，如(ru)(ru)(ru)均(jun)衡器調(diao)節、環繞聲(sheng)(sheng)解(jie)(jie)碼(ma)(ma)、聲(sheng)(sheng)場模(mo)擬等，用戶可(ke)(ke)(ke)根據需求自定義音(yin)效(xiao)(xiao)，無需額外(wai)搭配單獨的(de)(de)(de) DSP 芯(xin)(xin)(xin)片(pian)(pian)(pian)，簡化(hua)系統設計(ji)，如(ru)(ru)(ru)某家庭(ting)影院功(gong)(gong)(gong)(gong)(gong)(gong)放(fang)(fang)芯(xin)(xin)(xin)片(pian)(pian)(pian)集(ji)成(cheng)了 7.1 聲(sheng)(sheng)道 DSP 處理(li)功(gong)(gong)(gong)(gong)(gong)(gong)能(neng)，支持 Dolby Atmos 音(yin)效(xiao)(xiao)解(jie)(jie)碼(ma)(ma)，提(ti)升觀影的(de)(de)(de)沉浸感。另一(yi)方面(mian)(mian)，數(shu)字(zi)輸(shu)入(ru)接(jie)(jie)口(kou)的(de)(de)(de)普及讓功(gong)(gong)(gong)(gong)(gong)(gong)放(fang)(fang)芯(xin)(xin)(xin)片(pian)(pian)(pian)可(ke)(ke)(ke)直(zhi)接(jie)(jie)接(jie)(jie)收數(shu)字(zi)音(yin)頻(pin)信(xin)號，省去(qu)了傳統的(de)(de)(de)數(shu)模(mo)轉(zhuan)換環節，減少信(xin)號傳輸(shu)損耗與干擾，如(ru)(ru)(ru)部(bu)分(fen)功(gong)(gong)(gong)(gong)(gong)(gong)放(fang)(fang)芯(xin)(xin)(xin)片(pian)(pian)(pian)支持 I2S 數(shu)字(zi)音(yin)頻(pin)接(jie)(jie)口(kou)，可(ke)(ke)(ke)直(zhi)接(jie)(jie)與微控(kong)制器、音(yin)頻(pin) codec 進(jin)行(xing)數(shu)字(zi)信(xin)號交互，進(jin)一(yi)步(bu)提(ti)升音(yin)質。此外(wai)，隨著(zhu)人(ren)工智能(neng)技(ji)術(shu)的(de)(de)(de)發(fa)展(zhan)，部(bu)分(fen)高級功(gong)(gong)(gong)(gong)(gong)(gong)放(fang)(fang)芯(xin)(xin)(xin)片(pian)(pian)(pian)開始引入(ru) AI 算(suan)法，通過機器學(xue)習(xi)(xi)分(fen)析用戶的(de)(de)(de)聽音(yin)習(xi)(xi)慣(guan)與音(yin)頻(pin)信(xin)號特性(xing)，自動(dong)優(you)化(hua)放(fang)(fang)大(da)參數(shu)，如(ru)(ru)(ru)動(dong)態調(diao)整輸(shu)出功(gong)(gong)(gong)(gong)(gong)(gong)率與頻(pin)響(xiang)曲線，實現(xian) “個性(xing)化(hua)音(yin)效(xiao)(xiao)”；同時，AI 算(suan)法還可(ke)(ke)(ke)實時監測芯(xin)(xin)(xin)片(pian)(pian)(pian)的(de)(de)(de)工作(zuo)狀態，預測潛在(zai)故(gu)障，提(ti)前啟動(dong)保護(hu)機制，提(ti)升芯(xin)(xin)(xin)片(pian)(pian)(pian)的(de)(de)(de)可(ke)(ke)(ke)靠性(xing)。這些數(shu)字(zi)化(hua)技(ji)術(shu)創新(xin)，正推動(dong)功(gong)(gong)(gong)(gong)(gong)(gong)放(fang)(fang)芯(xin)(xin)(xin)片(pian)(pian)(pian)從單純的(de)(de)(de) “功(gong)(gong)(gong)(gong)(gong)(gong)率放(fang)(fang)大(da)器件” 向 “智能(neng)音(yin)頻(pin)處理(li)單元(yuan)” 轉(zhuan)變。河北炬芯(xin)(xin)(xin)芯(xin)(xin)(xin)片(pian)(pian)(pian)ATS283512S數(shu)字(zi)功(gong)(gong)(gong)(gong)(gong)(gong)放(fang)(fang)芯(xin)(xin)(xin)片(pian)(pian)(pian)多頻(pin)段(duan)諧波補償算(suan)法針(zhen)對揚聲(sheng)(sheng)器頻(pin)響(xiang)缺陷(xian)，實時生(sheng)成(cheng)反向諧波修正失真。

    D 類(lei)(lei)(lei)功(gong)放(fang)(fang)芯片作(zuo)為當(dang)前主流的數(shu)字功(gong)放(fang)(fang)類(lei)(lei)(lei)型，憑借明顯的技(ji)術優(you)勢占據大量(liang)市場份(fen)額。其主要優(you)勢在于(yu)高(gao)(gao)效(xiao)(xiao)率，通過脈(mo)(mo)沖寬度調(diao)制（PWM）技(ji)術，將(jiang)音(yin)頻(pin)信(xin)(xin)號轉(zhuan)化為高(gao)(gao)頻(pin)脈(mo)(mo)沖信(xin)(xin)號，只在脈(mo)(mo)沖導通時消耗電能(neng)(neng)，因此效(xiao)(xiao)率可達 80%-95%，遠(yuan)高(gao)(gao)于(yu) AB 類(lei)(lei)(lei)功(gong)放(fang)(fang)。這使得 D 類(lei)(lei)(lei)功(gong)放(fang)(fang)芯片發熱量(liang)大幅降低，無需復雜的散熱結(jie)構，特(te)別(bie)適合便攜(xie)式設備，如(ru)無線耳(er)機、藍牙音(yin)箱，能(neng)(neng)有(you)效(xiao)(xiao)延長設備續航時間。同時，D 類(lei)(lei)(lei)功(gong)放(fang)(fang)芯片體積(ji)小巧(qiao)，可集(ji)成更(geng)多功(gong)能(neng)(neng)模塊(kuai)，如(ru)音(yin)量(liang)控(kong)制、音(yin)效(xiao)(xiao)調(diao)節等，簡化設備設計。但 D 類(lei)(lei)(lei)功(gong)放(fang)(fang)也存在發展瓶(ping)頸，高(gao)(gao)頻(pin)脈(mo)(mo)沖信(xin)(xin)號易產生電磁干擾，可能(neng)(neng)影(ying)響(xiang)周(zhou)邊電子元件的正常工作(zuo)，需額外(wai)增加濾波電路；此外(wai)，在處理(li)低頻(pin)率信(xin)(xin)號時，若 PWM 調(diao)制精度不足(zu)，可能(neng)(neng)出現失真，影(ying)響(xiang)低音(yin)表現。近年來(lai)，廠商通過優(you)化調(diao)制算法(fa)、采用先進的芯片制造工藝（如(ru) 7nm 工藝），逐(zhu)步(bu)緩解了這些(xie)問(wen)題，讓 D 類(lei)(lei)(lei)功(gong)放(fang)(fang)的音(yin)質(zhi)逼近 AB 類(lei)(lei)(lei)功(gong)放(fang)(fang)水平。

    在(zai)復(fu)雜(za)多變(bian)的(de)(de)(de)(de)電(dian)(dian)(dian)磁(ci)環境中(zhong)，藍(lan)牙(ya)(ya)音(yin)(yin)響(xiang)芯(xin)片(pian)的(de)(de)(de)(de)抗干(gan)(gan)(gan)擾(rao)(rao)能(neng)(neng)力直接(jie)(jie)關系到音(yin)(yin)頻(pin)播放的(de)(de)(de)(de)質量與穩(wen)定性。生活中(zhong)，周圍存(cun)在(zai)著眾(zhong)多電(dian)(dian)(dian)子設備，如 Wi-Fi 路由(you)器、微波(bo)爐、手機基站等(deng)，它們產生的(de)(de)(de)(de)電(dian)(dian)(dian)磁(ci)信號容易對藍(lan)牙(ya)(ya)音(yin)(yin)響(xiang)芯(xin)片(pian)的(de)(de)(de)(de)信號傳(chuan)輸(shu)造(zao)成(cheng)干(gan)(gan)(gan)擾(rao)(rao)，導致聲音(yin)(yin)卡頓、失(shi)真甚至斷連。為(wei)了應對這一挑戰，各大芯(xin)片(pian)廠商紛紛投入(ru)研發(fa)，提升芯(xin)片(pian)的(de)(de)(de)(de)抗干(gan)(gan)(gan)擾(rao)(rao)能(neng)(neng)力。例如，聯發(fa)科的(de)(de)(de)(de)部分藍(lan)牙(ya)(ya)音(yin)(yin)響(xiang)芯(xin)片(pian)采用了先進(jin)(jin)的(de)(de)(de)(de)屏蔽(bi)技術(shu)與信號濾波(bo)算(suan)法，能(neng)(neng)夠(gou)有效屏蔽(bi)外界干(gan)(gan)(gan)擾(rao)(rao)信號，對接(jie)(jie)收的(de)(de)(de)(de)藍(lan)牙(ya)(ya)音(yin)(yin)頻(pin)信號進(jin)(jin)行準確濾波(bo)處理(li)，提取出(chu)純凈的(de)(de)(de)(de)音(yin)(yin)頻(pin)數據。即使在(zai)人員密集的(de)(de)(de)(de)公共(gong)場所或電(dian)(dian)(dian)磁(ci)干(gan)(gan)(gan)擾(rao)(rao)強(qiang)烈的(de)(de)(de)(de)工業環境中(zhong)，搭載(zai)此類(lei)芯(xin)片(pian)的(de)(de)(de)(de)藍(lan)牙(ya)(ya)音(yin)(yin)響(xiang)依(yi)然能(neng)(neng)夠(gou)穩(wen)定運行，為(wei)用戶持續提供清晰(xi)、流暢的(de)(de)(de)(de)音(yin)(yin)樂，展現出(chu)強(qiang)大的(de)(de)(de)(de)抗干(gan)(gan)(gan)擾(rao)(rao)性能(neng)(neng)。ATS2835P2通過電(dian)(dian)(dian)源管理(li)單(dan)元動態(tai)調整工作模(mo)式，芯(xin)片(pian)在(zai)播放狀態(tai)下功(gong)耗(hao)低(di)于16mA，待(dai)機功(gong)耗(hao)進(jin)(jin)一步(bu)降(jiang)低(di)。

    工(gong)(gong)業(ye)(ye)物(wu)聯網(wang)(wang)（IIoT）場景(jing)（如智(zhi)能(neng)工(gong)(gong)廠、設(she)備(bei)(bei)監控、物(wu)流(liu)追蹤）對(dui)藍(lan)(lan)(lan)牙(ya)(ya)芯(xin)(xin)(xin)片(pian)的(de)(de)高可(ke)(ke)靠性、廣(guang)覆蓋(gai)性、抗惡劣(lie)環(huan)境能(neng)力(li)(li)提出(chu)特殊要求(qiu)，推動芯(xin)(xin)(xin)片(pian)技(ji)術向工(gong)(gong)業(ye)(ye)級標(biao)準升級。首(shou)先(xian)，工(gong)(gong)業(ye)(ye)環(huan)境中存在(zai)強電(dian)(dian)(dian)磁干擾、粉(fen)塵、濕度(du)大等問題(ti)，工(gong)(gong)業(ye)(ye)級藍(lan)(lan)(lan)牙(ya)(ya)芯(xin)(xin)(xin)片(pian)需(xu)(xu)具備(bei)(bei)高電(dian)(dian)(dian)磁兼容性（EMC），通過(guo)優化(hua)電(dian)(dian)(dian)路設(she)計與封(feng)裝(zhuang)工(gong)(gong)藝（如 IP67 防護(hu)等級封(feng)裝(zhuang)），確保在(zai)惡劣(lie)環(huan)境中穩定(ding)(ding)工(gong)(gong)作；同(tong)時(shi)采用寬(kuan)電(dian)(dian)(dian)壓供電(dian)(dian)(dian)設(she)計（如 3.3V-24V），適(shi)應工(gong)(gong)業(ye)(ye)設(she)備(bei)(bei)的(de)(de)供電(dian)(dian)(dian)需(xu)(xu)求(qiu)。其次，工(gong)(gong)業(ye)(ye)物(wu)聯網(wang)(wang)需(xu)(xu)實現大規(gui)模設(she)備(bei)(bei)組網(wang)(wang)，藍(lan)(lan)(lan)牙(ya)(ya)芯(xin)(xin)(xin)片(pian)支(zhi)(zhi)持(chi)的(de)(de) Mesh 組網(wang)(wang)技(ji)術可(ke)(ke)連(lian)接數千個節(jie)點，且具備(bei)(bei)自(zi)修復(fu)、自(zi)組網(wang)(wang)能(neng)力(li)(li)，滿(man)足(zu)智(zhi)能(neng)工(gong)(gong)廠中傳感器(qi)、控制器(qi)、執(zhi)行器(qi)的(de)(de)互聯需(xu)(xu)求(qiu)，如通過(guo)藍(lan)(lan)(lan)牙(ya)(ya) Mesh 網(wang)(wang)絡實時(shi)傳輸(shu)設(she)備(bei)(bei)運(yun)行數據（如溫度(du)、壓力(li)(li)、轉速），實現設(she)備(bei)(bei)狀態監控與故障(zhang)預警。此外，工(gong)(gong)業(ye)(ye)級藍(lan)(lan)(lan)牙(ya)(ya)芯(xin)(xin)(xin)片(pian)需(xu)(xu)具備(bei)(bei)高穩定(ding)(ding)性與長壽命，平均無(wu)故障(zhang)工(gong)(gong)作時(shi)間(jian)（MTBF）需(xu)(xu)達(da)到 50 萬小時(shi)以上，同(tong)時(shi)支(zhi)(zhi)持(chi)遠程固件升級（OTA），無(wu)需(xu)(xu)拆(chai)卸設(she)備(bei)(bei)即可(ke)(ke)更新芯(xin)(xin)(xin)片(pian)程序，降低維護(hu)成(cheng)本(ben)。在(zai)物(wu)流(liu)追蹤場景(jing)中，藍(lan)(lan)(lan)牙(ya)(ya)芯(xin)(xin)(xin)片(pian)還可(ke)(ke)集成(cheng)定(ding)(ding)位(wei)(wei)功能(neng)，通過(guo)與藍(lan)(lan)(lan)牙(ya)(ya)信標(biao)配(pei)合，實現貨物(wu)實時(shi)定(ding)(ding)位(wei)(wei)與軌跡記錄，提升物(wu)流(liu)管理(li)效率(lv)(lv)。ACM8815其數字(zi)輸(shu)入接口支(zhi)(zhi)持(chi)192kHz采樣率(lv)(lv)，配(pei)合32位(wei)(wei)音(yin)頻(pin)處理(li)精度(du)，可(ke)(ke)完整還原高解(jie)析度(du)音(yin)頻(pin)信號細(xi)節(jie)。上海至(zhi)盛芯(xin)(xin)(xin)片(pian)ATS2835P

ACM8815動(dong)態電(dian)源(yuan)管理技術使電(dian)池供電(dian)設備續(xu)航時間延長30%，適用于便攜式(shi)卡(ka)拉OK機等移(yi)動(dong)場(chang)景。貴州國產芯(xin)片ATS3005

    汽(qi)(qi)車(che)(che)(che)(che)音(yin)響系(xi)統對功(gong)(gong)(gong)放芯(xin)(xin)(xin)片的(de)(de)(de)(de)要(yao)求(qiu)遠超普(pu)通(tong)家用設備(bei)，需(xu)同(tong)(tong)時(shi)(shi)應(ying)(ying)對復雜(za)的(de)(de)(de)(de)車(che)(che)(che)(che)載(zai)(zai)環(huan)(huan)境與多(duo)樣化的(de)(de)(de)(de)音(yin)效需(xu)求(qiu)。首先，車(che)(che)(che)(che)載(zai)(zai)功(gong)(gong)(gong)放芯(xin)(xin)(xin)片需(xu)具備(bei)寬電(dian)壓(ya)適應(ying)(ying)能力，能在(zai)汽(qi)(qi)車(che)(che)(che)(che)電(dian)瓶電(dian)壓(ya)波(bo)(bo)動(dong)（通(tong)常(chang)為 9V-16V）的(de)(de)(de)(de)情況下穩(wen)定工(gong)作，避免因電(dian)壓(ya)變(bian)化導致音(yin)質(zhi)波(bo)(bo)動(dong)或(huo)芯(xin)(xin)(xin)片損壞(huai)。其次，汽(qi)(qi)車(che)(che)(che)(che)內部(bu)高溫(wen)(wen)、振動(dong)、電(dian)磁干(gan)擾強的(de)(de)(de)(de)環(huan)(huan)境，要(yao)求(qiu)芯(xin)(xin)(xin)片具備(bei)高溫(wen)(wen)耐受性（通(tong)常(chang)需(xu)承(cheng)受 - 40℃-85℃的(de)(de)(de)(de)溫(wen)(wen)度范圍）和(he)抗(kang)振動(dong)性能，部(bu)分高級車(che)(che)(che)(che)載(zai)(zai)功(gong)(gong)(gong)放芯(xin)(xin)(xin)片還會采用金屬封裝(zhuang)，增強散(san)熱與抗(kang)干(gan)擾能力。此(ci)(ci)外，汽(qi)(qi)車(che)(che)(che)(che)音(yin)響常(chang)需(xu)支持多(duo)聲(sheng)道(dao)(dao)輸出(chu)，如 4.1 聲(sheng)道(dao)(dao)、5.1 聲(sheng)道(dao)(dao)系(xi)統，因此(ci)(ci)功(gong)(gong)(gong)放芯(xin)(xin)(xin)片需(xu)具備(bei)多(duo)通(tong)道(dao)(dao)設計，同(tong)(tong)時(shi)(shi)滿足(zu)不同(tong)(tong)聲(sheng)道(dao)(dao)的(de)(de)(de)(de)功(gong)(gong)(gong)率(lv)(lv)需(xu)求(qiu)，比如主聲(sheng)道(dao)(dao)需(xu)兼(jian)顧中高頻(pin)音(yin)質(zhi)，低音(yin)聲(sheng)道(dao)(dao)則(ze)需(xu)提供大推力。例如，某品(pin)牌(pai)車(che)(che)(che)(che)載(zai)(zai)功(gong)(gong)(gong)放芯(xin)(xin)(xin)片可實現每聲(sheng)道(dao)(dao) 50W 的(de)(de)(de)(de)輸出(chu)功(gong)(gong)(gong)率(lv)(lv)，且(qie)總諧波(bo)(bo)失真低于 0.01%，既能滿足(zu)日常(chang)聽(ting)歌(ge)需(xu)求(qiu)，也(ye)能應(ying)(ying)對激烈駕駛(shi)時(shi)(shi)的(de)(de)(de)(de)音(yin)效體驗。貴州國(guo)產芯(xin)(xin)(xin)片ATS3005