1<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 2<html> 3 4<head> 5<LINK rel="stylesheet" type="text/css" href="../../CSS/revolution.css"> 6<title>axvpb.pb.mix</title> 7<META http-equiv="Content-Type" content="text/html; charset=windows-1252"> 8<META name="GENERATOR" content="IBM WebSphere Studio Homepage Builder Version 6.5.0.0 for Windows"> 9<META http-equiv="Content-Style-Type" content="text/css"> 10</head> 11 12<body> 13 14<h1 align="left">axvpb.pb.mix</h1> 15 16 17<h2>C Specification</h2> 18<BLOCKQUOTE> 19<pre><CODE>typedef struct _AXPBMIX 20{ 21 22 u16 vL; // volume left 23 u16 vDeltaL; // volume ramp left 24 u16 vR; // volume right 25 u16 vDeltaR; // volume ramp right 26 27 u16 vAuxAL; // volume AUX A left 28 u16 vDeltaAuxAL; // volume ramp AUX A left 29 u16 vAuxAR; // volume AUX A right 30 u16 vDeltaAuxAR; // volume ramp AUX A right 31 32 u16 vAuxBL; // volume AUX B left 33 u16 vDeltaAuxBL; // volume ramp AUX B left 34 u16 vAuxBR; // volume AUX B right 35 u16 vDeltaAuxBR; // volume ramp AUX B right 36 37 u16 vAuxCL; // volume AUX C left 38 u16 vDeltaAuxCL; // volume ramp AUX C left 39 u16 vAuxCR; // volume AUX C right 40 u16 vDeltaAuxCR; // volume ramp AUX C right 41 42 u16 vS; // volume surround 43 u16 vDeltaS; // volume ramp surround 44 u16 vAuxAS; // volume AUX A surround 45 u16 vDeltaAuxAS; // volume ramp AUX A surround 46 u16 vAuxBS; // volume AUX B surround 47 u16 vDeltaAuxBS; // volume ramp AUX B surround 48 u16 vAuxCS; // volume AUX C surround 49 u16 vDeltaAuxCS; // volume ramp AUX C surround 50 51} AXPBMIX;</CODE></pre> 52</BLOCKQUOTE> 53<h2>Description</h2> 54 55<p>These values specify the mixing parameters for each of the 12 channels in a given voice. Volume is expressed as a 16-bit, fixed-point number (most significant bit for the integer, 15 bits of fraction). <BR><B>Note:</B> The <code>axvpb.pb.mixerCtrl</code> value must also be initialized correctly in order to apply these values.</p> 56 57<p><strong><B>Note:</B></strong> The DSP does not clamp volume-ramp computations. Your audio application is responsible for ensuring that the computation remains within bounds.</p> 58 59<p>In <code>AX_MODE_DPL2</code> mode, <code>AXPBMIX</code> is used as follows:</p> 60 61<pre><CODE> 62// Note: In DPL2, AuxC bus is not supported. 63 64 u16 vL; // volume left 65 u16 vDeltaL; // volume ramp left 66 u16 vR; // volume right 67 u16 vDeltaR; // volume ramp right 68 69 u16 vAuxAL; // volume AUX A left 70 u16 vDeltaAuxAL; // volume ramp AUX A left 71 u16 vAuxAR; // volume AUX A right 72 u16 vDeltaAuxAR; // volume ramp AUX A right 73 74 u16 vAuxBL; // volume AUX B left 75 u16 vDeltaAuxBL; // volume ramp AUX B left 76 u16 vAuxBR; // volume AUX B right 77 u16 vDeltaAuxBR; // volume ramp AUX B right 78 79 u16 vAuxCL; // volume right surround 80 u16 vDeltaAuxCL; // volume ramp right surround 81 u16 vAuxCR; // volume Aux A right surround 82 u16 vDeltaAuxCR; // volume ramp Aux A right surround 83 84 u16 vS; // volume left surround 85 u16 vDeltaS; // volume ramp left surround 86 u16 vAuxAS; // volume AUX A left surround 87 u16 vDeltaAuxAS; // volume ramp left AUX A surround 88 u16 vAuxBS; // volume AUX B left surround 89 u16 vDeltaAuxBS; // volume ramp AUX B left surround 90 u16 vAuxCS; // volume AUX B right surround 91 u16 vDeltaAuxCS; // volume ramp AUX B right surround 92 93</CODE></pre> 94 95<p>The user must assert the <code>AX_SYNC_USER_MIX</code> bit in the <code>axvpb.sync</code> member, when any of the above values have changed.</p> 96 97<h2>See Also</h2> 98<p> 99<code><a href="../Voice_Parameter_Blocks/sync.html">axvpb.sync</a><br> <a href="mixerCtrl.html">axvpb.pb.mixerCtrl</a><br> <a href="../Voice_Parameters/AXSetVoiceMix.html">AXSetVoiceMix</a></code> 100</p> 101 102<h2>Revision History</h2> 103 104<P>2006/03/01 Initial version.</P><p> </p> 105<hr> 106<P>CONFIDENTIAL</p> 107</BODY> 108</HTML> 109