语音电路应完成预录三段提示音，分别是“家里有盗贼入侵，请及时赶回”。同时，在电话接通后，可以将语音分段播放。根据系统的功能要求，系统选择了美国ISD公司的ISD1420语音芯片。-Voice circuit should be completed three pre-recorded audio prompts are " thieves at home invasion, please rush back in time." At the same time, the ph

语音芯片1420的使用程序。ISDl420为ISD公司出品的优质单片语音录放电路，单片录放时间8～20 s音质较好。-Procedures for use of voice chips 1420. ISDl420 for the ISD chip company produced high-quality voice playback circuitry, single playback time of 8 ~ 20 s in better sound quality.

ISD专用语音芯片的发音控制部分程序用于语音电路应用开发-ISD dedicated voice sound chip for voice circuit control part of the application development process