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<h1>depukfb.H</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="preprocessor">#ifndef DEPUKFB_H_</span>
<a name="l00002"></a>00002 <span class="preprocessor"></span><span class="preprocessor">#define DEPUKFB_H_</span>
<a name="l00003"></a>00003 <span class="preprocessor"></span>
<a name="l00004"></a>00004 <span class="preprocessor">#include <fstream></span>
<a name="l00005"></a>00005
<a name="l00006"></a>00006 <span class="preprocessor">#include <iostream></span>
<a name="l00007"></a>00007 <span class="preprocessor">#include <math.h></span>
<a name="l00008"></a>00008 <span class="comment">//#include "../utils/perceptual.H"</span>
<a name="l00009"></a>00009 <span class="preprocessor">#include <stdlib.h></span>
<a name="l00010"></a>00010
<a name="l00011"></a>00011 <span class="preprocessor">#define FREQBINCOUNT 44100</span>
<a name="l00012"></a>00012 <span class="preprocessor"></span>
<a name="l00013"></a>00013 <span class="comment">//Filter bank central frequencies will be placed between this frequency fs/2</span>
<a name="l00014"></a>00014 <span class="preprocessor">#define LOWFREQ 50</span>
<a name="l00015"></a>00015 <span class="preprocessor"></span>
<a name="l00016"></a>00016 <span class="preprocessor">#define C1 24.673</span>
<a name="l00017"></a>00017 <span class="preprocessor"></span><span class="preprocessor">#define C2 4.368</span>
<a name="l00018"></a>00018 <span class="preprocessor"></span><span class="preprocessor">#define C3 21.366</span>
<a name="l00019"></a>00019 <span class="preprocessor"></span>
<a name="l00020"></a>00020 <span class="comment">//We are using a level invariant filterbank Hence define X as static</span>
<a name="l00021"></a>00021 <span class="preprocessor">#define X 51.0</span>
<a name="l00022"></a>00022 <span class="preprocessor"></span>
<a name="l00029"></a><a class="code" href="classDepUKFB.html">00029</a> <span class="keyword">class </span><a class="code" href="classDepUKFB.html">DepUKFB</a>{
<a name="l00030"></a>00030 <span class="keyword">static</span> <span class="keywordtype">double</span> p_51_1k;
<a name="l00031"></a>00031 <span class="keywordtype">int</span> fCount;
<a name="l00032"></a>00032
<a name="l00037"></a>00037 <span class="keywordtype">double</span> erb(<span class="keywordtype">double</span> fc){
<a name="l00038"></a>00038 <span class="keywordflow">return</span> 24.7*(4.37*(fc/1000.0)+1.0);
<a name="l00039"></a>00039 }
<a name="l00040"></a>00040
<a name="l00045"></a>00045 <span class="keywordtype">double</span> freq2ERB(<span class="keywordtype">double</span> freq){
<a name="l00046"></a>00046 <span class="keywordflow">return</span> (C3*log10((C2 * freq/1000.0) + 1.0));
<a name="l00047"></a>00047 }
<a name="l00052"></a>00052 <span class="keywordtype">double</span> ERB2freq(<span class="keywordtype">double</span> erb){
<a name="l00053"></a>00053 <span class="keywordflow">return</span> 1000.0 * (pow(10.0,(erb/C3)) - 1.0) / C2;
<a name="l00054"></a>00054 }
<a name="l00055"></a>00055
<a name="l00061"></a>00061 <span class="keyword">virtual</span> <span class="keywordtype">void</span> af(<span class="keywordtype">double</span> fc, <span class="keywordtype">int</span> whichFilter){
<a name="l00062"></a>00062 <span class="comment">// std::cout<<"DepUKFB::af"<<std::endl;</span>
<a name="l00063"></a>00063 <span class="keywordtype">double</span> freqFact=((double)<a class="code" href="classDepUKFB.html#a13cbfe921394b68c53a17878367566a9" title="The sample frequency.">fs</a>/2.0)/(double)FREQBINCOUNT;
<a name="l00064"></a>00064 <span class="comment">// std::cout<<freqFact<<'\t';</span>
<a name="l00065"></a>00065 <span class="keywordtype">double</span> freq=0.0;
<a name="l00066"></a>00066 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0;i<FREQBINCOUNT;i++){
<a name="l00067"></a>00067 <a class="code" href="classDepUKFB.html#a2a50ed00bdba4a02376f568e9012906c" title="g coeff.">g</a>[i]=fabs((freq-fc)/fc);
<a name="l00068"></a>00068 freq+=freqFact;
<a name="l00069"></a>00069 }
<a name="l00070"></a>00070
<a name="l00071"></a>00071 <span class="keywordtype">double</span> *filt=<a class="code" href="classDepUKFB.html#adefe805565fa01861468b5a51ca87a89" title="The filters.">w</a>[whichFilter], p;
<a name="l00072"></a>00072 freq=0.0;
<a name="l00073"></a>00073
<a name="l00074"></a>00074 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0;i<FREQBINCOUNT;i++){
<a name="l00075"></a>00075 <span class="keywordflow">if</span> (freq<fc)
<a name="l00076"></a>00076 p=<a class="code" href="classDepUKFB.html#add2cdb1268800eade95915f209e09166">p_l</a>(fc);
<a name="l00077"></a>00077 <span class="keywordflow">else</span>
<a name="l00078"></a>00078 p=<a class="code" href="classDepUKFB.html#ac9c9ed1ccc3a941359ff1d5d8c243c65">p_u</a>(fc);
<a name="l00079"></a>00079 filt[i]=(1.0+p*<a class="code" href="classDepUKFB.html#a2a50ed00bdba4a02376f568e9012906c" title="g coeff.">g</a>[i])*exp(-p*<a class="code" href="classDepUKFB.html#a2a50ed00bdba4a02376f568e9012906c" title="g coeff.">g</a>[i]);
<a name="l00080"></a>00080 freq+=freqFact;
<a name="l00081"></a>00081 }
<a name="l00082"></a>00082 }
<a name="l00083"></a>00083
<a name="l00084"></a>00084
<a name="l00088"></a>00088 <span class="keywordtype">void</span> findCF(<span class="keywordtype">void</span>){
<a name="l00089"></a>00089 <span class="keywordtype">double</span> step=(freq2ERB((<span class="keywordtype">double</span>)<a class="code" href="classDepUKFB.html#a13cbfe921394b68c53a17878367566a9" title="The sample frequency.">fs</a>/2.0-1.0)-freq2ERB(LOWFREQ))/(fCount-1.0);
<a name="l00090"></a>00090 <span class="comment">//std::cout<<"step "<<step<<std::endl;</span>
<a name="l00091"></a>00091 <span class="keywordtype">double</span> erbval=freq2ERB(LOWFREQ)-step;
<a name="l00092"></a>00092 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0;i<fCount;i++){
<a name="l00093"></a>00093 <a class="code" href="classDepUKFB.html#ad0783de52b1d2ab777484d344e566514" title="The filter centre frequencies.">cf</a>[i]=ERB2freq(erbval+=step); <span class="comment">//centre frequency locations</span>
<a name="l00094"></a>00094 <span class="comment">//std::cout<<cf[i]<<std::endl;</span>
<a name="l00095"></a>00095 }
<a name="l00096"></a>00096
<a name="l00097"></a>00097 erbval=freq2ERB(LOWFREQ)-step/2.0;
<a name="l00098"></a>00098 <a class="code" href="classDepUKFB.html#aa995091f157e795c2ef67277594c8431" title="The filter edge frequencies.">ef</a>[0]=0.0;
<a name="l00099"></a>00099 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=1;i<fCount;i++){
<a name="l00100"></a>00100 <a class="code" href="classDepUKFB.html#aa995091f157e795c2ef67277594c8431" title="The filter edge frequencies.">ef</a>[i]=ERB2freq(erbval+=step); <span class="comment">//edge frequency locations</span>
<a name="l00101"></a>00101 <span class="comment">//std::cout<<cf[i]<<'\t'<<ef[i]<<std::endl;</span>
<a name="l00102"></a>00102 }
<a name="l00103"></a>00103 }
<a name="l00104"></a>00104 <span class="keyword">protected</span>:
<a name="l00105"></a><a class="code" href="classDepUKFB.html#a13cbfe921394b68c53a17878367566a9">00105</a> <span class="keywordtype">int</span> <a class="code" href="classDepUKFB.html#a13cbfe921394b68c53a17878367566a9" title="The sample frequency.">fs</a>;
<a name="l00106"></a><a class="code" href="classDepUKFB.html#a2a50ed00bdba4a02376f568e9012906c">00106</a> <span class="keywordtype">double</span> *<a class="code" href="classDepUKFB.html#a2a50ed00bdba4a02376f568e9012906c" title="g coeff.">g</a>;
<a name="l00107"></a><a class="code" href="classDepUKFB.html#adefe805565fa01861468b5a51ca87a89">00107</a> <span class="keywordtype">double</span> **<a class="code" href="classDepUKFB.html#adefe805565fa01861468b5a51ca87a89" title="The filters.">w</a>;
<a name="l00108"></a>00108
<a name="l00109"></a><a class="code" href="classDepUKFB.html#ad08c4284678b86df790942023a5703ef">00109</a> <a class="code" href="classDepUKFB.html#ad08c4284678b86df790942023a5703ef">DepUKFB</a>(){
<a name="l00110"></a>00110 }
<a name="l00111"></a>00111
<a name="l00116"></a><a class="code" href="classDepUKFB.html#add2cdb1268800eade95915f209e09166">00116</a> <span class="keywordtype">double</span> <a class="code" href="classDepUKFB.html#add2cdb1268800eade95915f209e09166">p_l</a>(<span class="keywordtype">double</span> fc){
<a name="l00117"></a>00117 <span class="comment">// The following reduces to p_51 for constant X</span>
<a name="l00118"></a>00118 <span class="comment">//double p_51=4.0*fc/erb(fc);</span>
<a name="l00119"></a>00119 <span class="comment">// return p_51-0.35*(p_51/p_51_1k)*(X-51.0);</span>
<a name="l00120"></a>00120 <span class="keywordflow">return</span> 4.0*fc/erb(fc);
<a name="l00121"></a>00121 }
<a name="l00122"></a>00122
<a name="l00127"></a><a class="code" href="classDepUKFB.html#ac9c9ed1ccc3a941359ff1d5d8c243c65">00127</a> <span class="keywordtype">double</span> <a class="code" href="classDepUKFB.html#ac9c9ed1ccc3a941359ff1d5d8c243c65">p_u</a>(<span class="keywordtype">double</span> fc){
<a name="l00128"></a>00128 <span class="comment">// The following reduces to p_51 for constant X</span>
<a name="l00129"></a>00129 <span class="comment">//double p_51=4.0*fc/erb(fc);</span>
<a name="l00130"></a>00130 <span class="comment">//return p_51+0.118*(X-51.0);</span>
<a name="l00131"></a>00131 <span class="keywordflow">return</span> 4.0*fc/erb(fc);
<a name="l00132"></a>00132 }
<a name="l00133"></a>00133 <span class="keyword">public</span>:
<a name="l00134"></a><a class="code" href="classDepUKFB.html#ad0783de52b1d2ab777484d344e566514">00134</a> <span class="keywordtype">double</span> *<a class="code" href="classDepUKFB.html#ad0783de52b1d2ab777484d344e566514" title="The filter centre frequencies.">cf</a>;
<a name="l00135"></a><a class="code" href="classDepUKFB.html#aa995091f157e795c2ef67277594c8431">00135</a> <span class="keywordtype">double</span> *<a class="code" href="classDepUKFB.html#aa995091f157e795c2ef67277594c8431" title="The filter edge frequencies.">ef</a>;
<a name="l00136"></a>00136
<a name="l00142"></a><a class="code" href="classDepUKFB.html#a0a7880e97f8ff1f18ce0d50bc117a1c4">00142</a> <a class="code" href="classDepUKFB.html#a0a7880e97f8ff1f18ce0d50bc117a1c4">DepUKFB</a>(<span class="keywordtype">int</span> sampleFreq, <span class="keywordtype">int</span> fCnt=50){
<a name="l00143"></a>00143 <a class="code" href="classDepUKFB.html#ae39f616845a715311d9c2666bb5b086c">init</a>(sampleFreq, fCnt);
<a name="l00144"></a>00144 }
<a name="l00145"></a>00145
<a name="l00151"></a><a class="code" href="classDepUKFB.html#ae39f616845a715311d9c2666bb5b086c">00151</a> <span class="keywordtype">void</span> <a class="code" href="classDepUKFB.html#ae39f616845a715311d9c2666bb5b086c">init</a>(<span class="keywordtype">int</span> sampleFreq, <span class="keywordtype">int</span> fCnt=50){
<a name="l00152"></a>00152 fCount=fCnt;
<a name="l00153"></a>00153 <a class="code" href="classDepUKFB.html#a13cbfe921394b68c53a17878367566a9" title="The sample frequency.">fs</a>=sampleFreq;
<a name="l00154"></a>00154 <a class="code" href="classDepUKFB.html#ad0783de52b1d2ab777484d344e566514" title="The filter centre frequencies.">cf</a>=<a class="code" href="classDepUKFB.html#aa995091f157e795c2ef67277594c8431" title="The filter edge frequencies.">ef</a>=<a class="code" href="classDepUKFB.html#a2a50ed00bdba4a02376f568e9012906c" title="g coeff.">g</a>=NULL;
<a name="l00155"></a>00155 <a class="code" href="classDepUKFB.html#adefe805565fa01861468b5a51ca87a89" title="The filters.">w</a>=NULL;
<a name="l00156"></a>00156 <span class="keywordflow">if</span> (!(<a class="code" href="classDepUKFB.html#a2a50ed00bdba4a02376f568e9012906c" title="g coeff.">g</a>=<span class="keyword">new</span> <span class="keywordtype">double</span>[FREQBINCOUNT])){
<a name="l00157"></a>00157 std::cerr<<<span class="stringliteral">"DepUKFB::DepUKFB: g malloc error"</span><<std::endl;
<a name="l00158"></a>00158 exit(-1);
<a name="l00159"></a>00159 }
<a name="l00160"></a>00160 <span class="keywordflow">if</span> (!(<a class="code" href="classDepUKFB.html#adefe805565fa01861468b5a51ca87a89" title="The filters.">w</a>=<span class="keyword">new</span> <span class="keywordtype">double</span>*[fCount])){
<a name="l00161"></a>00161 std::cerr<<<span class="stringliteral">"DepUKFB::DepUKFB: w malloc error"</span><<std::endl;
<a name="l00162"></a>00162 exit(-1);
<a name="l00163"></a>00163 } <span class="keywordflow">else</span> {
<a name="l00164"></a>00164 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0;i<fCount;i++)
<a name="l00165"></a>00165 <a class="code" href="classDepUKFB.html#adefe805565fa01861468b5a51ca87a89" title="The filters.">w</a>[i]=NULL;
<a name="l00166"></a>00166 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0;i<fCount;i++){
<a name="l00167"></a>00167 <span class="keywordflow">if</span> (!(<a class="code" href="classDepUKFB.html#adefe805565fa01861468b5a51ca87a89" title="The filters.">w</a>[i]=<span class="keyword">new</span> <span class="keywordtype">double</span>[FREQBINCOUNT])){
<a name="l00168"></a>00168 std::cerr<<<span class="stringliteral">"DepUKFB::DepUKFB: w[i] malloc error"</span><<std::endl;
<a name="l00169"></a>00169 exit(-1);
<a name="l00170"></a>00170 }
<a name="l00171"></a>00171 }
<a name="l00172"></a>00172 }
<a name="l00173"></a>00173
<a name="l00174"></a>00174 <span class="keywordflow">if</span> (!(<a class="code" href="classDepUKFB.html#ad0783de52b1d2ab777484d344e566514" title="The filter centre frequencies.">cf</a>=<span class="keyword">new</span> <span class="keywordtype">double</span>[fCount])){
<a name="l00175"></a>00175 std::cerr<<<span class="stringliteral">"DepUKFB::DepUKFB: cf malloc error"</span><<std::endl;
<a name="l00176"></a>00176 exit(-1);
<a name="l00177"></a>00177 }
<a name="l00178"></a>00178
<a name="l00179"></a>00179 <span class="keywordflow">if</span> (!(<a class="code" href="classDepUKFB.html#aa995091f157e795c2ef67277594c8431" title="The filter edge frequencies.">ef</a>=<span class="keyword">new</span> <span class="keywordtype">double</span>[fCount])){
<a name="l00180"></a>00180 std::cerr<<<span class="stringliteral">"DepUKFB::DepUKFB: ef malloc error"</span><<std::endl;
<a name="l00181"></a>00181 exit(-1);
<a name="l00182"></a>00182 }
<a name="l00183"></a>00183
<a name="l00184"></a>00184 <span class="comment">//Place the filter centre freqs ...</span>
<a name="l00185"></a>00185 findCF();
<a name="l00186"></a>00186 <span class="comment">//Step through and fill each filter ...</span>
<a name="l00187"></a>00187 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0;i<fCount;i++)
<a name="l00188"></a>00188 af(<a class="code" href="classDepUKFB.html#ad0783de52b1d2ab777484d344e566514" title="The filter centre frequencies.">cf</a>[i],i);
<a name="l00189"></a>00189 }
<a name="l00190"></a>00190
<a name="l00191"></a><a class="code" href="classDepUKFB.html#a815c8d16189f0f4c4a3e49bf65533ed7">00191</a> <span class="keyword">virtual</span> <a class="code" href="classDepUKFB.html#a815c8d16189f0f4c4a3e49bf65533ed7">~DepUKFB</a>(){
<a name="l00192"></a>00192 <span class="keywordflow">if</span> (<a class="code" href="classDepUKFB.html#a2a50ed00bdba4a02376f568e9012906c" title="g coeff.">g</a>) <span class="keyword">delete</span> [] <a class="code" href="classDepUKFB.html#a2a50ed00bdba4a02376f568e9012906c" title="g coeff.">g</a>;
<a name="l00193"></a>00193 <span class="keywordflow">if</span> (<a class="code" href="classDepUKFB.html#adefe805565fa01861468b5a51ca87a89" title="The filters.">w</a>){
<a name="l00194"></a>00194 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0;i<fCount;i++)
<a name="l00195"></a>00195 <span class="keywordflow">if</span> (<a class="code" href="classDepUKFB.html#adefe805565fa01861468b5a51ca87a89" title="The filters.">w</a>[i]) <span class="keyword">delete</span> [] <a class="code" href="classDepUKFB.html#adefe805565fa01861468b5a51ca87a89" title="The filters.">w</a>[i];
<a name="l00196"></a>00196 <span class="keyword">delete</span> [] <a class="code" href="classDepUKFB.html#adefe805565fa01861468b5a51ca87a89" title="The filters.">w</a>;
<a name="l00197"></a>00197 }
<a name="l00198"></a>00198 <span class="keywordflow">if</span> (<a class="code" href="classDepUKFB.html#ad0783de52b1d2ab777484d344e566514" title="The filter centre frequencies.">cf</a>) <span class="keyword">delete</span> [] <a class="code" href="classDepUKFB.html#ad0783de52b1d2ab777484d344e566514" title="The filter centre frequencies.">cf</a>;
<a name="l00199"></a>00199 <span class="keywordflow">if</span> (<a class="code" href="classDepUKFB.html#aa995091f157e795c2ef67277594c8431" title="The filter edge frequencies.">ef</a>) <span class="keyword">delete</span> [] <a class="code" href="classDepUKFB.html#aa995091f157e795c2ef67277594c8431" title="The filter edge frequencies.">ef</a>;
<a name="l00200"></a>00200 }
<a name="l00201"></a>00201
<a name="l00202"></a><a class="code" href="classDepUKFB.html#aeb2700aa4a1543328be7548e7b89c279">00202</a> <span class="keywordtype">int</span> <a class="code" href="classDepUKFB.html#aeb2700aa4a1543328be7548e7b89c279" title="Returns the number of filters.">filterCount</a>(<span class="keywordtype">void</span>){<span class="keywordflow">return</span> fCount;}
<a name="l00203"></a>00203
<a name="l00208"></a><a class="code" href="classDepUKFB.html#aff2350868073dd42a14f52c1706db577">00208</a> <span class="keywordtype">double</span>* <a class="code" href="classDepUKFB.html#aff2350868073dd42a14f52c1706db577">operator[]</a>(<span class="keywordtype">int</span> i){<span class="keywordflow">return</span> <a class="code" href="classDepUKFB.html#adefe805565fa01861468b5a51ca87a89" title="The filters.">w</a>[i];}
<a name="l00215"></a><a class="code" href="classDepUKFB.html#a9b3723ab1293dc010ad9b50660ba9091">00215</a> <span class="keywordtype">double</span> <a class="code" href="classDepUKFB.html#a9b3723ab1293dc010ad9b50660ba9091">operator()</a>(<span class="keywordtype">int</span> i, <span class="keywordtype">int</span> j, <span class="keywordtype">int</span> binCount){
<a name="l00216"></a>00216 <span class="keywordtype">int</span> index=(int)rint((<span class="keywordtype">double</span>)j*((double)FREQBINCOUNT/(<span class="keywordtype">double</span>)binCount));
<a name="l00217"></a>00217 <span class="comment">//std::cout<<i<<'\t'<<j<<'\t'<<binCount<<'\t'<<index<<std::endl;</span>
<a name="l00218"></a>00218 <span class="keywordflow">return</span> <a class="code" href="classDepUKFB.html#adefe805565fa01861468b5a51ca87a89" title="The filters.">w</a>[i][index];
<a name="l00219"></a>00219 }
<a name="l00220"></a>00220 };
<a name="l00221"></a>00221 <span class="preprocessor">#endif //DEPUKFB_H_</span>
<a name="l00222"></a>00222 <span class="preprocessor"></span>
<a name="l00223"></a>00223
<a name="l00224"></a>00224
</pre></div></div>
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