From: manu <manu@5fc3e0e6-29bc-4d03-b52b-c088cb822bde>
Date: Mon, 10 Dec 2007 14:36:43 +0000 (+0000)
Subject: mv get_latency.m
X-Git-Url: https://git.parisson.com/?a=commitdiff_plain;h=cd1563d0f5435e894c5c2b1d1a343e9b2cd9a987;p=cnaq.git

mv get_latency.m


git-svn-id: http://svn.parisson.org/svn/CNAQ/trunk@131 5fc3e0e6-29bc-4d03-b52b-c088cb822bde
---

diff --git a/tests/get_latency.m b/tests/get_latency.m
deleted file mode 100644
index e5d893e..0000000
--- a/tests/get_latency.m
+++ /dev/null
@@ -1,32 +0,0 @@
-function [mfv,ecart] = get_latency(device, n)
-% this function allows measuring the latency of the playrecord process
-% where :
-% 'device' is the integer number of the audio card address from the ASIO
-% driver point of view (0 or 1, 2 etc...)
-% 'n' is the number of generation/acquisition operations
-% mfv: most found delay
-% ecart: standard deviation on delay
-
-    if nargin < 1, n = 10; end
-
-    %signal generation
-    f_min=20;
-    f_max=20000;
-    lt=5;  
-    t=0:1/44100:lt;
-    sig=0.9*chirp(t,f_min,lt,f_max,'logarithmic');
-    len_sig = length(sig);
-
-    %playrecord signal
-    for it = 1:n
-        pause(0.1);
-        inputbuffer = pa_wavplayrecord(sig',device,[44100],0,[1],[1],device,['asio']);
-        Co=xcorr(inputbuffer',sig');
-        [Y(it),I(it)] = max(Co);
-        delai(it)=I(it)-len_sig;
-
-    end
-
-    mfv=mode(delai);
-    ecart=std(delai);
-
diff --git a/tests/getdelay.asv b/tests/getdelay.asv
deleted file mode 100644
index 3e2617e..0000000
--- a/tests/getdelay.asv
+++ /dev/null
@@ -1,33 +0,0 @@
-function [delai]=getdelay(n)
-%this function allows measuring the lattency of the playrecord process for
-%n generation/acquisition operations
-if nargin < 1, n = 10; end
-
-%signal generation
-f_min=100;
-f_max=20000;
-lt=5;  
-t=0:1/44100:lt;
-sig=0.9*chirp(t,20,lt,20000,'logarithmic');
-len_sig = length(sig);
-
-%playrecord signal
-for it = 1:n
-        pause(0.1)
-    inputbuffer = pa_wavplayrecord(sig',1,[44100],0,[1],[1],1,['asio']);
-    Co=xcorr(inputbuffer',sig');
-    [Y(it),I(it)] = max(Co);
-    delai(it)=I(it)-len_sig;
-       
-end
-
-mfv=mode(delai);
-mfvt =num2str(mfv);
-sprintf('%s','the most frequent delay is ', mfvt,' samples.')
-
-%Plot results
-hist(delai)
-title('delay distribution')
-xlabel('delay')
-
-
diff --git a/tests/getdelay.m b/tests/getdelay.m
deleted file mode 100644
index a9f0cb2..0000000
--- a/tests/getdelay.m
+++ /dev/null
@@ -1,28 +0,0 @@
-function [mfv,ecart]=getdelay(n)
-% this function allows measuring the lattency of the playrecord process for
-% n generation/acquisition operations
-% mfv: most found delay
-% ecart: standard deviation on delay
-if nargin < 1, n = 10; end
-
-%signal generation
-f_min=100;
-f_max=20000;
-lt=5;  
-t=0:1/44100:lt;
-sig=0.9*chirp(t,f_min,lt,f_max,'logarithmic');
-len_sig = length(sig);
-
-%playrecord signal
-for it = 1:n
-        pause(0.1)
-    inputbuffer = pa_wavplayrecord(sig',1,[44100],0,[1],[1],1,['asio']);
-    Co=xcorr(inputbuffer',sig');
-    [Y(it),I(it)] = max(Co);
-    delai(it)=I(it)-len_sig;
-       
-end
-
-mfv=mode(delai);
-ecart=std(delai);
-
diff --git a/tools/get_latency.m b/tools/get_latency.m
new file mode 100644
index 0000000..e5d893e
--- /dev/null
+++ b/tools/get_latency.m
@@ -0,0 +1,32 @@
+function [mfv,ecart] = get_latency(device, n)
+% this function allows measuring the latency of the playrecord process
+% where :
+% 'device' is the integer number of the audio card address from the ASIO
+% driver point of view (0 or 1, 2 etc...)
+% 'n' is the number of generation/acquisition operations
+% mfv: most found delay
+% ecart: standard deviation on delay
+
+    if nargin < 1, n = 10; end
+
+    %signal generation
+    f_min=20;
+    f_max=20000;
+    lt=5;  
+    t=0:1/44100:lt;
+    sig=0.9*chirp(t,f_min,lt,f_max,'logarithmic');
+    len_sig = length(sig);
+
+    %playrecord signal
+    for it = 1:n
+        pause(0.1);
+        inputbuffer = pa_wavplayrecord(sig',device,[44100],0,[1],[1],device,['asio']);
+        Co=xcorr(inputbuffer',sig');
+        [Y(it),I(it)] = max(Co);
+        delai(it)=I(it)-len_sig;
+
+    end
+
+    mfv=mode(delai);
+    ecart=std(delai);
+