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-<center><h1>Module <a href="type_Signal.html">Signal</a></h1></center>
-<br>
-<pre><span class="keyword">module</span> Signal: <code class="code">sig</code> <a href="Signal.html">..</a> <code class="code">end</code></pre>Module: Signal
- Description: type signal = rate * (int -> value), operations of signals.<br>
-<b>Author(s):</b> WANG Haisheng
- Created: 03/06/2013 Modified: 03/06/2013<br>
-<hr width="100%">
-<pre><span id="EXCEPTIONSignal_operation"><span class="keyword">exception</span> Signal_operation</span> <span class="keyword">of</span> <code class="type">string</code></pre>
-<div class="info">
-Exception raised in operations of signals.<br>
-</div>
-<br><code><span id="TYPEsignal_macro"><span class="keyword">type</span> <code class="type"></code>signal_macro</span> = </code><table class="typetable">
-<tr>
-<td align="left" valign="top" >
-<code><span class="keyword">|</span></code></td>
-<td align="left" valign="top" >
-<code><span class="constructor">Delay_Memory_Length_int</span></code></td>
-
-</tr></table>
-
-<div class="info">
-Macro constants of the file.<br>
-</div>
-
-<pre><span id="VALsignal_macro_to_int"><span class="keyword">val</span> <a href="code_VALSignal.signal_macro_to_int.html">signal_macro_to_int</a></span> : <code class="type"><a href="Signal.html#TYPEsignal_macro">signal_macro</a> -> int</code></pre><div class="info">
-val signal_macro_to_int : signal_macro -> int.<br>
-</div>
-<pre><span id="VALfrequency"><span class="keyword">val</span> <a href="code_VALSignal.frequency.html">frequency</a></span> : <code class="type">'a * 'b -> 'a</code></pre><div class="info">
-val frequency : signal -> int, returns the frequency of a signal.<br>
-</div>
-<pre><span id="VALsignal_fun"><span class="keyword">val</span> <a href="code_VALSignal.signal_fun.html">signal_fun</a></span> : <code class="type">'a * 'b -> 'b</code></pre><div class="info">
-val signal_fun : signal -> (int -> value), returns the functional part of a signal.<br>
-</div>
-<pre><span id="VALcheck_frequency"><span class="keyword">val</span> <a href="code_VALSignal.check_frequency.html">check_frequency</a></span> : <code class="type">int -> int -> int</code></pre><div class="info">
-val check_frequency : int -> int -> int, returns the correction of frequency.<br>
-</div>
-<pre><span id="VALsignal_check_frequency"><span class="keyword">val</span> <a href="code_VALSignal.signal_check_frequency.html">signal_check_frequency</a></span> : <code class="type">int * 'a -> int * 'b -> int</code></pre><div class="info">
-val signal_check_frequency : signal -> signal -> int,
-checks the frequencies of two input signals, and returns common frequency or raise an exception.<br>
-</div>
-<pre><span id="VALsignal_check_frequency3"><span class="keyword">val</span> <a href="code_VALSignal.signal_check_frequency3.html">signal_check_frequency3</a></span> : <code class="type">int * 'a -> int * 'b -> int * 'c -> int</code></pre><div class="info">
-val signal_check_frequency3 : signal -> signal -> signal -> int,
-checks the frequencies of three input signal, and returns common frequency or raise an exception.<br>
-</div>
-<pre><span id="VALsignal_check_frequency4"><span class="keyword">val</span> <a href="code_VALSignal.signal_check_frequency4.html">signal_check_frequency4</a></span> : <code class="type">int * 'a -> int * 'b -> int * 'c -> int * 'd -> int</code></pre><div class="info">
-val signal_check_frequency4 : signal -> signal -> signal -> signal -> int,
-checks the frequencies of three input signal, and returns common frequency or raise an exception.<br>
-</div>
-<pre><span id="VALsignal_add_one_memory"><span class="keyword">val</span> <a href="code_VALSignal.signal_add_one_memory.html">signal_add_one_memory</a></span> : <code class="type">'a * (int -> 'b) -> 'a * (int -> 'b)</code></pre><div class="info">
-val signal_add_one_memory : signal -> signal,
-returns the signal with memory of one latest sample.<br>
-</div>
-<pre><span id="VALbeam_add_one_memory"><span class="keyword">val</span> <a href="code_VALSignal.beam_add_one_memory.html">beam_add_one_memory</a></span> : <code class="type">('a * (int -> 'b)) list -> ('a * (int -> 'b)) list</code></pre><div class="info">
-val beam_add_one_memory : signal list -> signal list,
-adds memory of one latest sample for each element in signal list.<br>
-</div>
-<pre><span id="VALsignal_add"><span class="keyword">val</span> <a href="code_VALSignal.signal_add.html">signal_add</a></span> : <code class="type">int * ('a -> <a href="Types.html#TYPEvalue">Types.value</a>) -><br> int * ('a -> <a href="Types.html#TYPEvalue">Types.value</a>) -> int * ('a -> <a href="Types.html#TYPEvalue">Types.value</a>)</code></pre><div class="info">
-val signal_add : signal -> signal -> signal, output(t) = input1(t) + input2(t),
- frequency consistent.<br>
-</div>
-<pre><span id="VALsignal_neg"><span class="keyword">val</span> <a href="code_VALSignal.signal_neg.html">signal_neg</a></span> : <code class="type">'a * ('b -> <a href="Types.html#TYPEvalue">Types.value</a>) -> 'a * ('b -> <a href="Types.html#TYPEvalue">Types.value</a>)</code></pre><div class="info">
-val signal_neg : signal -> signal, output(t) = -input(t), frequency consistent.<br>
-</div>
-<pre><span id="VALsignal_sub"><span class="keyword">val</span> <a href="code_VALSignal.signal_sub.html">signal_sub</a></span> : <code class="type">int * ('a -> <a href="Types.html#TYPEvalue">Types.value</a>) -><br> int * ('a -> <a href="Types.html#TYPEvalue">Types.value</a>) -> int * ('a -> <a href="Types.html#TYPEvalue">Types.value</a>)</code></pre><div class="info">
-val signal_sub : signal -> signal -> signal, output(t) = input1(t) - input2(t),
- frequency consistent.<br>
-</div>
-<pre><span id="VALsignal_mul"><span class="keyword">val</span> <a href="code_VALSignal.signal_mul.html">signal_mul</a></span> : <code class="type">int * ('a -> <a href="Types.html#TYPEvalue">Types.value</a>) -><br> int * ('a -> <a href="Types.html#TYPEvalue">Types.value</a>) -> int * ('a -> <a href="Types.html#TYPEvalue">Types.value</a>)</code></pre><div class="info">
-val signal_mul : signal -> signal -> signal, output(t) = input1(t) * input2(t),
- frequency consistent.<br>
-</div>
-<pre><span id="VALsignal_div"><span class="keyword">val</span> <a href="code_VALSignal.signal_div.html">signal_div</a></span> : <code class="type">int * ('a -> <a href="Types.html#TYPEvalue">Types.value</a>) -><br> int * ('a -> <a href="Types.html#TYPEvalue">Types.value</a>) -> int * ('a -> <a href="Types.html#TYPEvalue">Types.value</a>)</code></pre><div class="info">
-val signal_div : signal -> signal -> signal, output(t) = input1(t) / input2(t),
- frequency consistent.<br>
-</div>
-<pre><span id="VALsignal_delay"><span class="keyword">val</span> <a href="code_VALSignal.signal_delay.html">signal_delay</a></span> : <code class="type">'a * (int -> <a href="Types.html#TYPEvalue">Types.value</a>) -><br> 'b * (int -> <a href="Types.html#TYPEvalue">Types.value</a>) -> 'a * (int -> <a href="Types.html#TYPEvalue">Types.value</a>)</code></pre><div class="info">
-val signal_delay : signal -> signal -> signal, output(t) = input1(t - input2(t)),
- Attention: delay dynamic, frequency of output signal equals to that of first input signal.<br>
-</div>
-<pre><span id="VALsignal_mem"><span class="keyword">val</span> <a href="code_VALSignal.signal_mem.html">signal_mem</a></span> : <code class="type">'a * (int -> <a href="Types.html#TYPEvalue">Types.value</a>) -> 'a * (int -> <a href="Types.html#TYPEvalue">Types.value</a>)</code></pre><div class="info">
-val signal_mem : signal -> signal, equivalent to signal_delay with constant delay 1.<br>
-</div>
-<pre><span id="VALsignal_vectorize"><span class="keyword">val</span> <a href="code_VALSignal.signal_vectorize.html">signal_vectorize</a></span> : <code class="type">int * (int -> <a href="Types.html#TYPEvalue">Types.value</a>) -><br> 'a * (int -> <a href="Types.html#TYPEvalue">Types.value</a>) -> int * (int -> <a href="Types.html#TYPEvalue">Types.value</a>)</code></pre><div class="info">
-val signal_vectorize : signal -> signal -> signal, output(t)(i) = input1(input2(0) * t + i),
-Attention: vector size n static, frequency of output signal is (1/n * frequency of input1)<br>
-</div>
-<pre><span id="VALsignal_serialize"><span class="keyword">val</span> <a href="code_VALSignal.signal_serialize.html">signal_serialize</a></span> : <code class="type">int * (int -> <a href="Types.html#TYPEvalue">Types.value</a>) -> int * (int -> <a href="Types.html#TYPEvalue">Types.value</a>)</code></pre><div class="info">
-val signal_serialize : signal -> signal, output(t) = input(floor(t/n))(t%n),
- with n = size of input(0).
- Attention: input size unknown in the cas of "rec".<br>
-</div>
-<pre><span id="VALsignal_append"><span class="keyword">val</span> <a href="code_VALSignal.signal_append.html">signal_append</a></span> : <code class="type">int * ('a -> <a href="Types.html#TYPEvalue">Types.value</a>) -><br> int * ('a -> <a href="Types.html#TYPEvalue">Types.value</a>) -> int * ('a -> <a href="Types.html#TYPEvalue">Types.value</a>)</code></pre><div class="info">
-val signal_append : signal -> signal -> signal, symbol "#",
- appends vectors of the two input signals at each time, frequency consistent.<br>
-</div>
-<pre><span id="VALsignal_nth"><span class="keyword">val</span> <a href="code_VALSignal.signal_nth.html">signal_nth</a></span> : <code class="type">int * ('a -> <a href="Types.html#TYPEvalue">Types.value</a>) -><br> int * ('a -> <a href="Types.html#TYPEvalue">Types.value</a>) -> int * ('a -> <a href="Types.html#TYPEvalue">Types.value</a>)</code></pre><div class="info">
-val signal_nth : signal -> signal -> signal, symbol "[]", output(t) = input1(t)(input2(t)),
- frequency consistent. Attention: selection index dynamic.<br>
-</div>
-<pre><span id="VALsignal_floor"><span class="keyword">val</span> <a href="code_VALSignal.signal_floor.html">signal_floor</a></span> : <code class="type">'a * ('b -> <a href="Types.html#TYPEvalue">Types.value</a>) -> 'a * ('b -> <a href="Types.html#TYPEvalue">Types.value</a>)</code></pre><div class="info">
-val signal_floor : signal -> signal, output(t) = v_floor(input(t)), frequency consistent.<br>
-</div>
-<pre><span id="VALsignal_int"><span class="keyword">val</span> <a href="code_VALSignal.signal_int.html">signal_int</a></span> : <code class="type">'a * ('b -> <a href="Types.html#TYPEvalue">Types.value</a>) -> 'a * ('b -> <a href="Types.html#TYPEvalue">Types.value</a>)</code></pre><div class="info">
-val signal_int : signal -> signal, output(t) = v_int(input(t)), frequency consistent.<br>
-</div>
-<pre><span id="VALsignal_sin"><span class="keyword">val</span> <a href="code_VALSignal.signal_sin.html">signal_sin</a></span> : <code class="type">'a * ('b -> <a href="Types.html#TYPEvalue">Types.value</a>) -> 'a * ('b -> <a href="Types.html#TYPEvalue">Types.value</a>)</code></pre><div class="info">
-val signal_sin : signal -> signal, output(t) = v_sin(input(t)), frequency consistent.<br>
-</div>
-<pre><span id="VALsignal_cos"><span class="keyword">val</span> <a href="code_VALSignal.signal_cos.html">signal_cos</a></span> : <code class="type">'a * ('b -> <a href="Types.html#TYPEvalue">Types.value</a>) -> 'a * ('b -> <a href="Types.html#TYPEvalue">Types.value</a>)</code></pre><div class="info">
-val signal_cos : signal -> signal, output(t) = v_cos(input(t)), frequency consistent.<br>
-</div>
-<pre><span id="VALsignal_atan"><span class="keyword">val</span> <a href="code_VALSignal.signal_atan.html">signal_atan</a></span> : <code class="type">'a * ('b -> <a href="Types.html#TYPEvalue">Types.value</a>) -> 'a * ('b -> <a href="Types.html#TYPEvalue">Types.value</a>)</code></pre><div class="info">
-val signal_atan : signal -> signal, output(t) = v_atan(input(t)), frequency consistent.<br>
-</div>
-<pre><span id="VALsignal_atantwo"><span class="keyword">val</span> <a href="code_VALSignal.signal_atantwo.html">signal_atantwo</a></span> : <code class="type">'a * ('b -> <a href="Types.html#TYPEvalue">Types.value</a>) -><br> 'c * ('b -> <a href="Types.html#TYPEvalue">Types.value</a>) -> 'a * ('b -> <a href="Types.html#TYPEvalue">Types.value</a>)</code></pre><pre><span id="VALsignal_sqrt"><span class="keyword">val</span> <a href="code_VALSignal.signal_sqrt.html">signal_sqrt</a></span> : <code class="type">'a * ('b -> <a href="Types.html#TYPEvalue">Types.value</a>) -> 'a * ('b -> <a href="Types.html#TYPEvalue">Types.value</a>)</code></pre><div class="info">
-val signal_sqrt : signal -> signal, output(t) = v_sqrt(input(t)), frequency consistent.<br>
-</div>
-<pre><span id="VALsignal_rdtable"><span class="keyword">val</span> <a href="code_VALSignal.signal_rdtable.html">signal_rdtable</a></span> : <code class="type">'a * (int -> <a href="Types.html#TYPEvalue">Types.value</a>) -><br> 'b * (int -> 'c) -> 'd * ('e -> <a href="Types.html#TYPEvalue">Types.value</a>) -> 'd * ('e -> 'c)</code></pre><div class="info">
-val signal_rdtable : signal -> signal -> signal,
- output(t) = input1(input2(t)), frequency equals to that of input2.
- Attention: no memory implemented, very expensive when input1 comes from rec or delays.<br>
-</div>
-<pre><span id="VALsignal_mod"><span class="keyword">val</span> <a href="code_VALSignal.signal_mod.html">signal_mod</a></span> : <code class="type">int * ('a -> <a href="Types.html#TYPEvalue">Types.value</a>) -><br> int * ('a -> <a href="Types.html#TYPEvalue">Types.value</a>) -> int * ('a -> <a href="Types.html#TYPEvalue">Types.value</a>)</code></pre><div class="info">
-val signal_mod : signal -> signal -> signal,
- output(t) = input1(t) % input2(t), frequency consistent.<br>
-</div>
-<pre><span id="VALsignal_sup"><span class="keyword">val</span> <a href="code_VALSignal.signal_sup.html">signal_sup</a></span> : <code class="type">int * ('a -> <a href="Types.html#TYPEvalue">Types.value</a>) -><br> int * ('a -> <a href="Types.html#TYPEvalue">Types.value</a>) -> int * ('a -> <a href="Types.html#TYPEvalue">Types.value</a>)</code></pre><div class="info">
-val signal_sup : signal -> signal -> signal,
- output(t) = input1(t) > input2(t), frequency consistent.<br>
-</div>
-<pre><span id="VALsignal_inf"><span class="keyword">val</span> <a href="code_VALSignal.signal_inf.html">signal_inf</a></span> : <code class="type">int * ('a -> <a href="Types.html#TYPEvalue">Types.value</a>) -><br> int * ('a -> <a href="Types.html#TYPEvalue">Types.value</a>) -> int * ('a -> <a href="Types.html#TYPEvalue">Types.value</a>)</code></pre><div class="info">
-val signal_inf : signal -> signal -> signal,
- output(t) = input1(t) < input2(t), frequency consistent.<br>
-</div>
-<pre><span id="VALsignal_select2"><span class="keyword">val</span> <a href="code_VALSignal.signal_select2.html">signal_select2</a></span> : <code class="type">int * ('a -> <a href="Types.html#TYPEvalue">Types.value</a>) -><br> int * ('a -> 'b) -> int * ('a -> 'b) -> int * ('a -> 'b)</code></pre><div class="info">
-val signal_select2 : signal -> signal -> signal -> signal,
-<code class="code">signal_select2 si s0 s1</code> selects s0 or s1 by index si, frequency consistent.<br>
-</div>
-<pre><span id="VALsignal_select3"><span class="keyword">val</span> <a href="code_VALSignal.signal_select3.html">signal_select3</a></span> : <code class="type">int * ('a -> <a href="Types.html#TYPEvalue">Types.value</a>) -><br> int * ('a -> 'b) -> int * ('a -> 'b) -> int * ('a -> 'b) -> int * ('a -> 'b)</code></pre><div class="info">
-val signal_select3 : signal -> signal -> signal -> signal -> signal,
-<code class="code">signal_select3 si s0 s1 s2</code> selects s0 or s1 or s2 by index si, frequency consistent.<br>
-</div>
-<pre><span id="VALsignal_prefix"><span class="keyword">val</span> <a href="code_VALSignal.signal_prefix.html">signal_prefix</a></span> : <code class="type">'a * (int -> 'b) -> 'c * (int -> 'b) -> 'c * (int -> 'b)</code></pre><div class="info">
-val signal_prefix : signal -> signal -> signal,
-<code class="code">signal_prefix s0 s1</code> returns s0(0) if t = 0, s1(t-1) if t > 0, frequency same to s1.<br>
-</div>
-</body></html>
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