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Chapter 3. Using RealMedia > Authoring a Live RealMedia Stream

Authoring a Live RealMedia Stream

In this section, you’ll create a live RealMedia stream on your authoring computer. That is, source audio enters your computer uncompressed and exits as an encoded live stream. The RealServer forwards the live stream, in turn, to your listeners on the Internet. Make sure your audio source is plugged into your computer’s audio input. Use the same audio input level guidelines that you used to create a digital file (see Chapter 2).

Your source audio quality is crucial here. This is because no further opportunities (such as waveform editors) are typically available to optimize the signal between encoding and outputting that audio as a live stream. Make sure your signal is as clean as possible and that your level is set accurately—not so low that it can’t be heard and not so loud that it will distort; both scenarios prevent the encoder from doing a good job. You might want to place some audio hardware (such as a compressor) in your signal path to smooth the signal and increase the encoder’s efficiency. (See Chapter 11, “Advanced Audio Optimization.”)


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