As an alternative to using speech recognition in your voice application, you can use DTMF.
作为在语音应用程序中使用语音识别的备选方案，您可以使用DTMF。
DTMF signal used as dialing signal in tone telephone applied in many new field widely.
DT MF信号是音频电话中的拨号信号，广泛应用于新一代电话机。
DTMF signal used as dialing signal in tone telephone applied in many new field widely.
DT MF信号是音频电话中的拨号信号，广泛应用于新一代电话机。
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