Tech Gear Multi-Voice Changer


Posted on Feb 6, 2014

The Voice Changer has two different inputs, the microphone and the switches. The Voice Changer then outputs a signal to an OpAmp to amplify the signal being sent to the speaker. The frequency of this signal is changed depending on what voice effect is turned on. The more simple voice effects such as low pitch and high pitch only change the frequen


Tech Gear Multi-Voice Changer
Click here to download the full size of the above Circuit.

cy up or down. When the device is in robotic mode the signal changes from a low frequency to a high frequency and oscillates back and forth to create the robotic sound effect. The table below shows the frequency of the signal output to the speaker.




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