| 摘要 |
Systems and methods are disclosed for changing attributes of voice calls. During a voice call over a connection of a circuit-based network between a first station and a second station through a switching system, the switching system receives audio from the first station. The switching system also detects a code entered by the user of the first station. Upon detecting the code, the switching system changes one or more attributes of the audio received from the first station to generate audio with changed attributes. For instance, the switching system may raise or lower a volume of the audio, may raise or lower the frequency of the audio, may add or remove background tones, or change other attributes. The switching system then transmits the audio with the changed attributes to the second station.
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