改造AAC语音室学习机音质的措施

Measures to Improve the Quality of AAC Language Lab Learning Machine

介绍了改造AAC语音室学习机音质的措施,包括选择优质磁头调整录音补偿网络电路、放音补偿网络电路、音频压缩/扩展电路、电机稳速电路的参数。改造后的学习机带速稳定、音质层次分明、信噪比显著提高。此方法成本低、检测性能优、工作效率高。

The measures to improve the AAC language lab learning machine performance are introduced, which include se- lecting high quality head and scientifically adjusting the recording compensation network circuit, playing compensation net- work circuit, audio compression/expansion circuit, motor speed circuit parameters. The learning machine after changed has stable conveyor speed and quality level ,which obvious improves signal-to-noise ratio. This method is of low cost, excellent performance, high work efficiency and detection.