Taken from: http://www.home.zonnet.nl/robschluter/htmltaglist/
(Click on the pull-down menu at the very top of this page to Audioscopes or click here Schluter's list is very thorough, but he made a mistake in the rightoffset - "left" should be "right." Also, he lists the rightcolor as being the same as the leftcolor. Below is a corrected and updated version, since some values have been dropped and others have been changed for the most recent 2.7 build. (Schluter's other pages about HTML are very helpful, clearly written and show what works and doesn't work with several browsers.)
ALIGN
Use the align attribute to align the audioscope with the preceding text. The align attribute accepts any of five values: middle, left, right, texttop and baseline. The default value for align is baseline.
BGCOLOR
This sets a color similar to a table bgcolor. This is the color that shows when the scope is at rest. Default color seems to be gray.
BORDER
Use the border attribute to set the width of the audioscope border in pixels. Borders are drawn with anti-aliased ("invertborder") bevels. The default value for border is 0 pixels.
GAIN
Use the gain attribute to set a multiplier for the amplitude (height of the wiggles) display of the audioscope. The default value for gain is 1.
HEIGHT
Use the height attribute to set the height of the audioscope in pixels. The default value for height is 80 pixels.
The MSNTV (WebTV) interface uses the height of the audioscope to reserve space for it on the screen as it loads in a web page. Once that space is reserved for the audioscope, the MSNTV (WebTV) interface can draw the rest of the page. Use the height and width attributes so that viewers can access text and links on a page while the audioscope loads later.
LEFTCOLOR
Use the leftcolor attribute to set the color of the line that displays the left audio channel in the audioscope. (This will show as the UPPER horizontal line.) MSNTV (WebTV) accepts color values in either hex or color name format. The default value for leftcolor is "#8ece10".
LEFTOFFSET
See OFFSETS, below.
MAXLEVEL
Use the maxlevel attribute to specify whether the audioscope should clip the sound according to the specified gain. The default value for maxlevel is false. To set this attribute: maxlevel=true
OFFSETS
LEFTOFFSET: LEFT is the UPPER horizontal line in a scope. Use the leftoffset attribute to set the vertical offset for the display of the left audio channel. A POSITIVE value for leftoffset RAISES the line for the left audio channel above the center of the audioscope. A NEGATIVE value LOWERS the line below the center. The default value for leftoffset is 0 pixels.
RIGHTOFFSET: RIGHT is the LOWER line. Use the rightoffset attribute to set the vertical offset for the display of the right audio channel. A POSITIVE value for rightoffset LOWERS the line for the right audio channel below the center of the audioscope. A NEGATIVE value RAISES the line above the center of the scope. The default value for rightoffset is 1 pixel (which lowers the line).
A typically used set of values is: leftoffset="2" rightoffset="-2". By setting a positive value for leftoffset and a negative value for rightoffset (or vice versa), you can impose a separation between the lines for the two audio channels. This can give a good visual effect.
RIGHTCOLOR
Use the rightcolor attribute to set the color of the line that displays the right audio channel in the audioscope. (This will show as the LOWER horizontal line.) The MSNTV (WebTV) HTML interface accepts color values in either #rrggbb or color name format. The default value for rightcolor is "#ce8e10".
RIGHTOFFSET
See OFFSETS, above.
WIDTH
Use the width attribute to set the width of the audioscope in pixels. The default value for width is 100 pixels.
The MSNTV (WebTV) interface uses the width of the audioscope to reserve space for it on the screen as it loads in a web page. Once that space is reserved for the audioscope, the MSNTV (WebTV) interface can draw the rest of the page. Use the height and width attributes so that viewers can access text and links on a page while the audioscope loads later.
