Digitized speech is the speech sounds that are recorded in digital form and out put in analog form.

数字化语音就是以数字形式记录并以模拟形式输出的语音。

youdao

It includes audio dialogs that feature synthesized speech, digitized audio, recognition of spoken and telephone tone dialing input, and recording of spoken input.

它包含的音频对话框具有以下特点：语音合成、数字音频、声音识别和电话音质拨号输入和话音输入录制。

youdao

Similarly, huge amounts of human digitized speech were required to achieve the speech singularity (aka Siri).

FORBES: Teaching The iPhone To Drive: The Coming Singularity In Machine Vision