/mcpcharacter of the voice is altered to a significant degree and often has a quality that fluctuates. On some occasions, the voice becomes unintelligible.Volume Distortion - Volume distortion problems are associated with incorrect volume levels, whether constant or in flux.Note: The categorization of the symptoms is to a large degree dependent on the severity of the symptom, perceptual factors, and cultural factors. Therefore, the placement and grouping of symptoms within categories is in many cases arguable. In addition, there can be situations where the categories overlap. For example, static on the line can cause some form of voice distortion. This is a best attempt to give some structure to these terms and define the vocabulary. Sample Sound Recordings In this section, you can listen to sound recordings of the symptoms defined, along with control samples that allow you to hear the same recording without the accompanying symptom. A snippet sample of the symptom is included in order to allow for quicker download times and easier browsing. The full recording provides a longer sample so that the symptom can be properly heard. The symptom recordings are kept as MP3 files and can be played by any sound player that supports the MP3 file format. Also, included where possible, are one or more common causes (not necessarily the only ones) for the symptom that is defined. Note: Remember to keep your initial volume settings low. Increase volume as needed once you are comfortable with the volume levels of the recordings. If you have technical difficulties when you listen to or download these recordings, see the Common Problems Hearing Sound Files section of this document. Note: There have been some problems discovered accessing the sounds files directly from the document when certain versions of Internet Explorer (IE) are used. See the The Sounds Do Not Play Directly from the Document section for troubleshooting information. Noise This section contains sample recordings of noise problems that interfere with voice quality. Click on the links in the tables to hear a full recording, a control recording, or a snippet of the noise. A written description of the noise is also included along with possible causes. Absolute Silence G Clicking G Crackling G Crosstalk G Hissing G Hum G Popping G Motor Sound G Screeching G Static G