無線音頻設(shè)計平衡接收機(jī)范圍、音質(zhì)

　　無線音頻設(shè)計平衡接收機(jī)范圍、音質(zhì)

　　市場對更大移動性的需求導(dǎo)致傳統(tǒng)有線音頻娛樂產(chǎn)品向無線移動。由于產(chǎn)品制造商希望切斷對娛樂電子產(chǎn)品的束縛，工程師們在維持電池供電的無線音頻設(shè)計的信號范圍、聲音質(zhì)量和最大播放時間方面面臨重大挑戰(zhàn)。為了滿足這些要求，工程師可以從多個廠家提供豐富的產(chǎn)品，包括（按字母順序）的模擬設(shè)備，Cirrus Logic，CSR，飛思卡爾半導(dǎo)體線性技術(shù)，Linx技術(shù)，集成產(chǎn)品，芯片技術(shù)，恩智浦半導(dǎo)體，quickfilter技術(shù)，德克薩斯文書，其中許多人。

　　在典型的無線娛樂系統(tǒng)（圖1）中，源信號通過具有可選范圍擴(kuò)展器的無線rf接口傳輸?shù)讲シ牌飨到y(tǒng)，如立體聲耳機(jī)或揚(yáng)聲器。在播放器中，相應(yīng)的無線rf接口接收由編解碼器、音頻處理器或dsp處理的信號，以生成驅(qū)動揚(yáng)聲器的最終模擬信號。一個適當(dāng)?shù)?a target='_blank' class='arckwlink_none'>電源，通常包括一個電池和充電管理電路，完成系統(tǒng)。

　　Figure 1： A typical wireless audio system depends on reliable wireless communications between transmitter and receiver， as well as efficient audio processing at the receiving end. （Courtesy of Texas Instruments.）

　　In creating a wireless entertainment design， engineers face particular challenges in both wireless communications and audio processing. Reliable RF communications with high throughput and signal integrity is vital for ensuring an uninterrupted audio experience for the user even at extended ranges from the audio source. At the same time， robust audio signal processing is essential for maintaining audio fidelity and delivering the range of audio features expected in the marketplace. Available integrated solutions targeted for each of these subsystems can help engineers meet these requirements while reducing design complexity and cost.