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5		<title>SNDEXIirFilterTarget</title>
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9		<H1>SNDEXIirFilterTarget <IMG src="../../image/TWL.gif" width="24" height="12" border="0" align=middle></H1>
10
11		<H2>Definition</H2>
12		<DL>
13			<DD><CODE>#include &lt;twl/snd.h&gt;</CODE></DD>
14			<DD><PRE><CODE>typedef enum _SNDEXIirFilterTarget
15{
16    SNDEX_IIR_FILTER_ADC_1 = 0,
17    SNDEX_IIR_FILTER_ADC_2,
18    SNDEX_IIR_FILTER_ADC_3,
19    SNDEX_IIR_FILTER_ADC_4,
20    SNDEX_IIR_FILTER_ADC_5,
21    SNDEX_IIR_FILTER_DAC_LEFT_1,
22    SNDEX_IIR_FILTER_DAC_LEFT_2,
23    SNDEX_IIR_FILTER_DAC_LEFT_3,
24    SNDEX_IIR_FILTER_DAC_LEFT_4,
25    SNDEX_IIR_FILTER_DAC_LEFT_5,
26    SNDEX_IIR_FILTER_DAC_RIGHT_1,
27    SNDEX_IIR_FILTER_DAC_RIGHT_2,
28    SNDEX_IIR_FILTER_DAC_RIGHT_3,
29    SNDEX_IIR_FILTER_DAC_RIGHT_4,
30    SNDEX_IIR_FILTER_DAC_RIGHT_5,
31    SNDEX_IIR_FILTER_DAC_BOTH_1,
32    SNDEX_IIR_FILTER_DAC_BOTH_2,
33    SNDEX_IIR_FILTER_DAC_BOTH_3,
34    SNDEX_IIR_FILTER_DAC_BOTH_4,
35    SNDEX_IIR_FILTER_DAC_BOTH_5,
36    SNDEX_IIR_FILTER_TARGET_MAX
37} SNDEXIirFilterTarget;</CODE></PRE></DD>
38		</DL>
39
40		<H2>Elements</H2>
41		<TABLE>
42			<TBODY>
43				<TR>
44					<TH width="25%">SNDEX_IIR_FILTER_ADC_1 ... 5</TH>
45					<TD width="75%">IIR filter for microphone input data (stage 1 - stage 5).</TD>
46				</TR>
47				<TR>
48					<TH width="25%">SNDEX_IIR_FILTER_DAC_LEFT_1 ... 5</TH>
49					<TD width="75%">IIR filter for left speaker output data (stage 1 &ndash; stage 5).</TD>
50				</TR>
51				<TR>
52					<TH width="25%">SNDEX_IIR_FILTER_DAC_RIGHT_1 ... 5</TH>
53					<TD width="75%">IIR filter for right speaker output data (stage 1 &ndash; stage 5).</TD>
54				</TR>
55				<TR>
56					<TH width="25%">SNDEX_IIR_FILTER_DAC_BOTH_1 ... 5</TH>
57					<TD width="75%">IIR filter for both left and right speaker output data (stage 1 &ndash; stage 5).</TD>
58				</TR>
59			</TBODY>
60		</TABLE>
61
62		<H2>Description</H2>
63		<P>
64			This is an enumerated type that indicates the target to which IIR filters will be applied.
65		</P>
66		<P>
67			Filters are applied in ascending numerical order, as follows.<BR>
68			<UL>
69				<LI>(Microphone) -&gt; A/D converter -&gt; ADC1 -&gt; ADC2 -&gt; ADC3 -&gt; ADC4 -&gt; ADC5 -&gt; Microphone input data</LI>
70				<LI>Sound source -&gt; DAC1 -&gt; DAC2 -&gt; DAC3 -&gt; DAC4 -&gt; DAC5 -&gt; D/A converter -&gt; (Speakers)</LI>
71			</UL>
72		</P>
73		<H2>See Also</H2>
74		<P><CODE>
75				<A href="SNDEX_SetIirFilter.html">SNDEX_SetIirFilter</A>, <A href="SNDEX_SetIirFilterAsync.html">SNDEX_SetIirFilterAsync</A>, <A href="SNDEXIirFilterParam.html">SNDEXIirFilterParam</A></CODE>
76		</P>
77
78		<H2>Revision History</H2>
79		<P>
80			2008/07/08 Initial version.
81		</P>
82	<hr><p>CONFIDENTIAL</p></body>
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