[B! python] nagachikaã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯

nagachika id:nagachika

pythonã«é–¢ã™ã‚‹nagachikaã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (7)

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Theanoã®ä½¿ã„æ–¹ (2) è‡ªå‹•å¾®åˆ† - äººå·¥çŸ¥èƒ½ã«é–¢ã™ã‚‹æ–å‰µéŒ²
Theanoã®ä½¿ã„æ–¹ (1) ã‚·ãƒ³ãƒœãƒ«ã¨å…±æœ‰å¤‰æ•°ï¼ˆ2015/5/9ï¼‰ã®ã¤ã¥ãã€‚ ä»Šå›žã¯Theanoã®è‡ªå‹•å¾®åˆ†ã‚’è©¦ã—ã¦ã¿ã‚‹ã€‚ãƒã‚¸ã‚¹ãƒ†ã‚£ãƒƒã‚¯å›žå¸°ã‚„ãƒ‹ãƒ¥ãƒ¼ãƒ©ãƒ«ãƒãƒƒãƒˆãªã©å‹¾é…é™ä¸‹æ³•ã‚’ä½¿ã†ã‚¢ãƒ«ã‚´ãƒªã‚ºãƒ ã§ã¯ãƒ‘ãƒ©ãƒ¡ãƒ¼ã‚¿ã®æ›´æ–°å¼ã«ã‚³ã‚¹ãƒˆé–¢æ•°ï¼ˆèª¤å·®é–¢æ•°ï¼‰ ã®å¾®åˆ†ãŒå¿…è¦ã«ãªã‚‹ã€‚ é€šå¸¸ã€èª¤å·®é–¢æ•°ã®å¾®åˆ† ã‚’ç´™ã®ä¸Šã§è§£ã„ã¦ã‹ã‚‰ãã®çµæžœã®æ•°å¼ã‚’å®Ÿè£…ã™ã‚‹ã€‚ãŸã¨ãˆã°ã€å‰ã«å®Ÿè£…ã—ãŸå¤šå±¤ãƒ‘ãƒ¼ã‚»ãƒ—ãƒˆãƒãƒ³ã«ã‚ˆã‚‹é–¢æ•°è¿‘ä¼¼ï¼ˆ2015/1/22ï¼‰ã§ã¯ã€æ‰‹é † (4) ã§èª¤å·®é–¢æ•°ã®å¾®åˆ†ã‚’æ‰‹è¨ˆç®—ã§æ±‚ã‚ã¦ã‹ã‚‰å®Ÿè£…ã—ã¦ã„ã‚‹ã€‚ ã—ã‹ã—ã€ã‚³ã‚¹ãƒˆé–¢æ•°ãŒè¤‡é›‘ã«ãªã£ã¦ãã‚‹ã¨ã“ã®å¾®åˆ†ã‚’æ‰‹ã§è¨ˆç®—ã™ã‚‹ã®ã¯é¢å€’ãã•ã„ã—é–“é•ã„ã‚„ã™ã„ã€‚Theanoã®è‡ªå‹•å¾®åˆ†ã§ã¯ã€ã‚³ã‚¹ãƒˆé–¢æ•°ã¨ã©ã®å¤‰æ•°ã«ã¤ã„ã¦å¾®åˆ†ã™ã‚‹ã‹ã‚’ä¸Žãˆã‚‹ã ã‘ã§è‡ªå‹•çš„ã«å¾®åˆ†ã‚’è¨ˆç®—ã—ã¦ãã‚Œã‚‹ã®ã ã€‚ã¾ãšã¯ã€æ‰‹è¨ˆç®—ã§ãã‚‹ç°¡å˜ãªå¾®åˆ†ã‚’è¨ˆç®—ã—ã¦ã¿ã‚ˆã†ã€‚ ä¾‹1 ã¾ãšã¯ç°¡å˜ãªä¾‹ã§ ã‚’è¨ˆç®—ã—ã¦ã¿ã‚ˆã†ã€‚æ‰‹ã§è¨ˆç®—ã™ã‚‹ã¨ ã¨ãªã‚‹ã“ã¨ãŒ
nagachika 2015/05/20
python

math
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FIRãƒ•ã‚£ãƒ«ã‚¿ - äººå·¥çŸ¥èƒ½ã«é–¢ã™ã‚‹æ–å‰µéŒ²
Pythonã§éŸ³å£°ä¿¡å·å‡¦ç†ï¼ˆ2011/05/14ï¼‰ ä»Šå›žã‹ã‚‰ã—ã°ã‚‰ããƒ‡ã‚£ã‚¸ã‚¿ãƒ«ãƒ•ã‚£ãƒ«ã‚¿ã®å®Ÿé¨“ã‚’ã„ã‚ã„ã‚ã‚„ã‚ã†ã¨æ€ã„ã¾ã™ã€‚ ãƒ‡ã‚£ã‚¸ã‚¿ãƒ«ãƒ•ã‚£ãƒ«ã‚¿ã¯ã€ ä¹—ç®—å™¨ åŠ ç®—å™¨ é…å»¶å™¨ ã®3ã¤ã®è¦ç´ ã®çµ„ã¿åˆã‚ã›ã«ã‚ˆã£ã¦æ§‹æˆã•ã‚Œã¾ã™ã€‚ã“ã®çµ„ã¿åˆã‚ã›æ–¹ã«ã‚ˆã£ã¦ã€ FIRï¼ˆFinite Impulse Responseï¼‰ãƒ•ã‚£ãƒ«ã‚¿ IIRï¼ˆInfinite Impulse Responseï¼‰ãƒ•ã‚£ãƒ«ã‚¿ ã®2ç¨®é¡žã«ã‚ã‘ã‚‰ã‚Œã‚‹ã¨ã®ã“ã¨ã€‚ä»Šå›žã¯ã€FIRãƒ•ã‚£ãƒ«ã‚¿ã‚’å®Ÿè£…ã—ã¦ã¿ã¾ã™ã€‚ FIRãƒ•ã‚£ãƒ«ã‚¿ FIRãƒ•ã‚£ãƒ«ã‚¿ã®å®šç¾©å¼ã¯ã€ ã¨ãªã‚Šã€ç•³ã¿è¾¼ã¿ã®å®šç¾©å¼ã¨åŒã˜ã§ã™ã€‚x(n)ã¯å…¥åŠ›ä¿¡å·ã€y(n)ã¯å‡ºåŠ›ä¿¡å·ã€b(i)ã¯ä¹—ç®—å™¨ã®ãƒ•ã‚£ãƒ«ã‚¿ä¿‚æ•°ã€Nã¯é…å»¶å™¨ã®æ•°ï¼ˆãƒ•ã‚£ãƒ«ã‚¿ä¿‚æ•°ã®æ•°ã¯N+1ï¼‰ã§ã™ã€‚å¼ã¯é›£ã—ãã†ã ã‘ã©ã‚·ã‚°ãƒžã‚’ã»ãã—ã¦ã¿ã‚‹ã¨ã‘ã£ã“ã†ç°¡å˜ã€‚ b(0) x(n) æœ€æ–°ã®å…¥åŠ›ä¿¡å·x(n)ã«ãƒ•ã‚£ãƒ«ã‚¿ä¿‚æ•°b(0)ã‚’ã‹ã‘ã‚‹ b(1) x(n-
nagachika 2011/10/23
sound

python
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In Search of the Perfect Global Interpreter Lock
David Beazley's presentation discusses the Global Interpreter Lock (GIL) in Python and Ruby, em phasizing its impact on threading and performance, particularly on multicore systems. Experiments conducted show that while Ruby's performance rem ains relatively consistent between single-threaded and multi-threaded executions, Python can become significantly slower in threaded scenarios due to GIL const
nagachika 2011/10/17
python

ruby
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Pythonã§ã‚µã‚¦ãƒ³ãƒ‰ã‚¹ãƒšã‚¯ãƒˆãƒã‚°ãƒ©ãƒ - äººå·¥çŸ¥èƒ½ã«é–¢ã™ã‚‹æ–å‰µéŒ²
Pythonã§éŸ³å£°ä¿¡å·å‡¦ç†ï¼ˆ2011/05/14ï¼‰ ä»Šå›žã¯ã€ã•ã¾ã–ã¾ãªéŸ³å£°ã®ã‚¹ãƒšã‚¯ãƒˆãƒã‚°ãƒ©ãƒ ï¼ˆspectrogramï¼‰ã‚’æ±‚ã‚ã¦ã¿ãŸã„ã¨æ€ã„ã¾ã™ã€‚ç§‘å¦æœæŸ»çãŒå£°ç´‹åˆ†æžã§ä½¿ã£ã¦ã„ã‚‹ã‚„ã¤ã§ã™ãã€‚ã“ã†ã„ã†ã®ã€‚ åå‰ãŒã‚¹ãƒšã‚¯ãƒˆãƒã‚°ãƒ©ãƒ ã£ã¦ãã‚‰ã„ãªã®ã§ãƒ•ãƒ¼ãƒªã‚¨å¤‰æ›ã§æ±‚ã‚ã‚‹ã‚¹ãƒšã‚¯ãƒˆãƒ«ï¼ˆspectrumï¼‰ã¨é–¢ä¿‚ãŒã‚ã‚Šã¾ã™ã€‚ã‚¹ãƒšã‚¯ãƒˆãƒ«ã¯ã€é›¢æ•£ãƒ•ãƒ¼ãƒªã‚¨å¤‰æ›ï¼ˆ2011/6/11ï¼‰ã§ã‚‚ç´¹ä»‹ã—ã¾ã—ãŸãŒã€éŸ³å£°æ³¢å½¢ã®çŸæ™‚é–“ï¼ˆ512ã‚µãƒ³ãƒ—ãƒ«ãªã©ï¼‰ã®æ³¢å½¢ãƒ‡ãƒ¼ã‚¿ã®ä¸ã«ã©ã®ã‚ˆã†ãªå‘¨æ³¢æ•°æˆåˆ†ãŒã©ã‚Œã ã‘å«ã¾ã‚Œã‚‹ã‹ã‚’è¡¨ã—ãŸå›³ã§ã™ã€‚ã‚¹ãƒšã‚¯ãƒˆãƒ«ã¯ã€æ¨ªè»¸ãŒå‘¨æ³¢æ•°ã§ç¸¦è»¸ãŒå¼·åº¦ï¼ˆæŒ¯å¹…ã®2ä¹—ï¼‰ã¨ãªã£ã¦ã„ã¾ã™ã€‚ã‚¹ãƒšã‚¯ãƒˆãƒ«ã®ã‚°ãƒ©ãƒ•ã«ã¯ã€æ™‚é–“ãŒå…¥ã£ã¦ã“ãªã„ã®ãŒç‰¹å¾´çš„ã€‚æ™‚é–“ã¯FFTã‚’ã‹ã‘ã‚‹æ³¢å½¢ã®ä½ç½®ã§æ±ºã¾ã‚‹ã®ã§æ™‚é–“ã¯FFTã™ã‚‹å‰ã«ã‚ã‚‰ã‹ã˜ã‚å›ºå®šã•ã‚Œã¦ã„ã¾ã™ã€‚ã¡ãªã¿ã«ã€å…ƒã®æ³¢å½¢ã¯æ¨ªè»¸ãŒæ™‚é–“ãªã®ã§æ™‚é–“é ˜åŸŸã€ã‚¹ãƒšã‚¯ãƒˆãƒ«ã¯æ¨ªè»¸ãŒå‘¨æ³¢æ•°ãªã®ã§å‘¨æ³¢æ•°é ˜åŸŸã¨ã„ã„ã¾ã™
nagachika 2011/10/01
python

sound
ãƒªãƒ³ã‚¯
The Swinger
[tweetmeme source= â€˜plamereâ€™ only_single=false]Â One of my favorite hacks at last weekendâ€™s Music Hack Day is Tristanâ€™s Swinger. Â The Swinger is a bit of python code that takes any song and makes it swing. Â It does this be taking each beat and time-stretching the first half of each beat while time-shrinking the second half. Â It has quite a magical effect. Â Some examples: Every Breath You Take Money
nagachika 2010/05/30
sound

python
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Welcome | Flask (A Python Microframework)
Welcome to FlaskÂ¶ Welcome to Flaskâ€™s documentation. Flask is a lightweight WSGI web application framework. It is designed to make getting started quick and easy, with the ability to scale up to complex applications. Get started with Installation and then get an overview with the Quickstart. There is also a more detailed Tutorial that shows how to create a small but complete application with Flask.
nagachika 2010/05/30
python

web
ãƒªãƒ³ã‚¯
Xãƒ¶æ‰€æ‘: pythonã§ãƒ“ãƒ¼ãƒˆæ¤œå‡º
éŸ³å£°ã‚’èªã¿è¾¼ã‚“ã§ãƒ“ãƒ¼ãƒˆã‚’æ¤œå‡ºã™ã‚‹ã ã‘ã®ã‚½ãƒ•ãƒˆã€‚ ã‚¿ã‚¤ãƒŸãƒ³ã‚°ã§åˆ†å‰²ã—ãŸéŸ³å£°ã‚’æ›¸ãã ã—ãŸã‚Šã€ãã®ã‚¿ã‚¤ãƒŸãƒ³ã‚°ã«åˆ¥éŸ³æºã§ã‚¹ãƒ¯ãƒƒãƒ—ã—ãŸã‚Šã€ã„ã‚ã„ã‚æ©Ÿèƒ½ã‚’è¿½åŠ ã—ã¦ã¿ãŸã‚‰é¢ç™½ã„ã‹ã‚‚ã€‚ ã‚½ãƒ¼ã‚¹(å‹æ‰‹ã«åˆ©ç”¨ã—ã¦ãã ã•ã‚Œ) ã€Œbeatdetection_ch2.pyã€ã‚’ãƒ€ã‚¦ãƒ³ãƒãƒ¼ãƒ‰ ã„ã„ã‹ã’ã‚“ãªè§£èª¬ ã¾ãšéŸ³å£°ãƒ‡ãƒ¼ã‚¿ã‚’é †ç•ªã«1024ã‚µãƒ³ãƒ—ãƒ«ãšã¤å¹³å‡ã—ã¦ã€é…åˆ—energyã«ä¿æŒã™ã‚‹ã€‚ ä¾‹ãˆã°1ç§’ã®éŸ³æºãªã‚‰ä¸€èˆ¬çš„ã«44100ã‚µãƒ³ãƒ—ãƒ«ã‚ã‚‹ã®ã§ã€é…åˆ—energyã®ã‚µã‚¤ã‚ºã¯43ã«ãªã‚‹ã€‚ ã¾ãŸéŸ³å£°ãƒ‡ãƒ¼ã‚¿ã¯æ£è² ã®å€¤ãŒã‚ã‚‹ã®ã§å¹³å‡ã™ã‚‹éš›ã¯pow(sample[0],2) + pow(sample[1],2) + ...ã®ã‚ˆã†ã«å¹³æ–¹ã™ã‚‹ã‚ˆã†ã«ã€‚abs()ã§ã‚‚ã„ã„ã‹ã‚‚ã—ã‚Œãªã„ã€‚ import math #éŸ³æº(å³)ch_r(å³)ch_l def pow_a(c): #é…åˆ—ã®å€¤ã‚’å¹³æ–¹ã™ã‚‹é–¢æ•° return [math.
nagachika 2009/04/23
sound

python
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