摘要
IP话机喇叭功率较小,导致外放响度不如预期。若增加数字增益,则会导致破音和喇叭损坏,影响用户体验。为解决此问题,文章提出一种基于时频域动态压缩器的智能功放算法。该算法在整体音频上应用动态压缩器,并结合设备的硬件特性对音频的低频、中频及高频进行精细化处理,从而显著提高音频响度。实际测试表明,本文算法比网页即时通信(Web Real-Time Communication,WebRTC)自动增益控制(Automatic Gain Control,AGC)提升了21.80%的响度,提高了会议通话的质量和体验。
The speaker power of IP phone is small,which leads to the loudness of external playback is not as good as expected.If the digital gain is increased,the sound will be broken and the speaker will be damaged,which will affect the user experience.To solve this problem,this paper proposes an intelligent power amplifier algorithm based on dynamic compressor in time-frequency domain.In this algorithm,dynamic compressor is applied to the whole audio,and the low frequency,intermediate frequency and high frequency of the audio are refined according to the hardware characteristics of the device,so that the loudness of the audio is significantly improved.The actual test shows that this algorithm improves the loudness by 21.80%compared with the Automatic Gain Control(AGC)of Web Real-Time Communication(WebRTC),and improves the quality and experience of conference calls.
作者
陈荣观
CHEN Rongguan(Fujian i-Star Technology Co.,Ltd.,Fuzhou 350002,China)
出处
《电声技术》
2023年第7期97-99,共3页
Audio Engineering
关键词
音频响度
动态压缩器
智能功放
audio loudness
dynamic compressor
intelligent power amplifier
