Vocoder To use digital data transmission techniques first requires that the voice be digitized.
{"Image DocumentName": "VocoderTo use digital data transmission techniques first requires that the voice be digitized.", "Image ImageDescription": "The circuit that does this is a vocoder, a special type of analog-to-digital (A/D) converter and digital-to-analog (D/A) converter. With voice frequencies as high as 4 kHz, the minimum Nyquist sampling rate is 8 kHz. The A/D in a vocoder should sample the voice signal every 125 \u03bcs and generate a proportional binary word.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}