http://code.activestate.com/recipes/tags/sound/top/2017-05-13T12:12:30-07:00ActiveState Code Recipes2017-05-13T12:12:30-07:00Barry Walkerhttp://code.activestate.com/recipes/users/4177147/http://code.activestate.com/recipes/580801-a-white-noise-generator-to-sooth-baby-to-sleep/

<p style="color: grey"> Bash recipe 580801 by <a href="/recipes/users/4177147/">Barry Walker</a> (<a href="/recipes/tags/alarm/">alarm</a>, <a href="/recipes/tags/apple/">apple</a>, <a href="/recipes/tags/audio/">audio</a>, <a href="/recipes/tags/baby_alarm/">baby_alarm</a>, <a href="/recipes/tags/cygwin/">cygwin</a>, <a href="/recipes/tags/linux/">linux</a>, <a href="/recipes/tags/noise/">noise</a>, <a href="/recipes/tags/sleep/">sleep</a>, <a href="/recipes/tags/sound/">sound</a>, <a href="/recipes/tags/whitenoise/">whitenoise</a>). </p> <p>This is a simple BASH, DASH and SH script to sooth a newborn baby to sleep for a laptop with a builtin mic. Develeoped around an Apple MacBook Pro.</p> <p>Usage:- [./]shush.sh &lt;time in seconds from 18 to 2700&gt; [sensitivity [Hh|Mm|Ll]]&lt;CR&gt;</p> <p>If time is omitted it defaults to 2 bursts of 9 seconds each and if sensitivity is omitted defaults to [M]edium.</p> <p>It uses Quicktime Player for Apple OSX 10.12.4 minimum /dev/dsp for CygWin and some Linux flavours and arecored for Linux ALSA machines for baby awake detector.</p> <p>Upon the two arguments the white noise generator runs for approximately the time given in $1 in bursts of 9 seconds until the time limit is reached. $2 is used to detect of baby is awake and reruns the noise generator again with a new noise waveform.</p> <p>Enjoy...</p>

2011-12-19T08:14:55-08:00Barry Walkerhttp://code.activestate.com/recipes/users/4177147/http://code.activestate.com/recipes/577990-yet-another-python-generator/

<p style="color: grey"> Python recipe 577990 by <a href="/recipes/users/4177147/">Barry Walker</a> (<a href="/recipes/tags/audio/">audio</a>, <a href="/recipes/tags/demo/">demo</a>, <a href="/recipes/tags/generator/">generator</a>, <a href="/recipes/tags/linux/">linux</a>, <a href="/recipes/tags/signal/">signal</a>, <a href="/recipes/tags/sound/">sound</a>, <a href="/recipes/tags/source/">source</a>, <a href="/recipes/tags/sweep/">sweep</a>). </p> <p>Aha, but not what big guns were expecting...</p> <p>LF Audio Sweep Generator.</p> <p>Another kids level project to do for yourselves...</p> <p>This is a Python DEMO to show the power of the sound card using Linux to generate an Audio Sweep Signal from 4KHz down to 100Hz and back again.</p> <p>Written in such a way that anyone can understand how it works... This is for Linux and Python 2.x.x. Read the code for much more information, and...... A Python 3.x.x version is here:-</p> <p><a href="http://www.linuxformat.com/forums/viewtopic.php?t=14411" rel="nofollow">http://www.linuxformat.com/forums/viewtopic.php?t=14411</a></p> <p>Enjoy finding simple solutions to often VERY difficult problems...</p> <p>Bazza, G0LCU...</p>

2011-11-30T21:23:20-08:00Barry Walkerhttp://code.activestate.com/recipes/users/4177147/http://code.activestate.com/recipes/577971-for-amiga-heads-only-generating-an-audio-signal-in/

<p style="color: grey"> Python recipe 577971 by <a href="/recipes/users/4177147/">Barry Walker</a> (<a href="/recipes/tags/amiga/">amiga</a>, <a href="/recipes/tags/audio/">audio</a>, <a href="/recipes/tags/demo/">demo</a>, <a href="/recipes/tags/e_uae/">e_uae</a>, <a href="/recipes/tags/sound/">sound</a>, <a href="/recipes/tags/winuae/">winuae</a>). </p> <p>This DEMO is not for the big guns. It is aimed at those who still use a minimum of an ancient classic AMIGA A1200(HD), E-UAE, WinUAE, of which there are still a lot of us about...</p> <p>No comments about the use of "eval()" as Python Version 1.4.0 does not have "int()" and this is designed to work on all versions of Python available for the above platform. See the code for minimum requirements and much more information.</p> <p>MANY THANKS to Irmen de Jong for porting early versions of Python to the classic AMIGA to give we lowly users a taste of what was/is to come.</p> <p>This code will probably make the professionals cough a little, but, boy what fun it is to see how powerful Python can be on an open platform like the AMIGA.</p> <p>Written in such a way that anyone can understand how it works...</p> <p>I really don't care how you vote this as it is for those, including professionals, who enjoy messing with AMIGA variants purely for fun and relaxation, and, to......</p> <p>Enjoy finding simple solutions to often VERY difficult problems... ;o)</p> <p>Bazza, G0LCU...</p>

2011-11-21T18:00:43-08:00Barry Walkerhttp://code.activestate.com/recipes/users/4177147/http://code.activestate.com/recipes/577955-a-demo-frequency-counter-with-a-difference-text-mo/

<p style="color: grey"> Python recipe 577955 by <a href="/recipes/users/4177147/">Barry Walker</a> (<a href="/recipes/tags/audio/">audio</a>, <a href="/recipes/tags/counter/">counter</a>, <a href="/recipes/tags/demo/">demo</a>, <a href="/recipes/tags/frequency/">frequency</a>, <a href="/recipes/tags/linux/">linux</a>, <a href="/recipes/tags/sound/">sound</a>). </p> <p>Hi experts...</p> <p>I think that this is a first... ;o)</p> <p>Another kids level project to do for yourselves...</p> <p>This is yet another Python DEMO to show the power of the sound card using Linux as an audio frequency counter.</p> <p>It is a kids level project that uses the sound card as an input through the microphone socket to measure up to &gt;3500Hz from a symmetrical waveform, sine square or triangle. See the comments inside the code for more details...</p> <p>The only external hardware required is a test lead; oh my, this is technical stuff... ;o)</p> <p>This is for Python 2.x.x, (probably even down to 1.5.2) but it would be just as easy to make it work on 3.x.x. I've already done it......</p> <p>......But I'll let the big guns do that for you...</p> <p>Enjoy finding simple solutions to often VERY difficult problems...</p> <p>Be aware of word wrapping etc...</p> <p>Bazza, G0LCU...</p>

2011-10-26T19:24:32-07:00Barry Walkerhttp://code.activestate.com/recipes/users/4177147/http://code.activestate.com/recipes/577924-and-now-for-something-completely-different-using-t/

<p style="color: grey"> Python recipe 577924 by <a href="/recipes/users/4177147/">Barry Walker</a> (<a href="/recipes/tags/audio/">audio</a>, <a href="/recipes/tags/demo/">demo</a>, <a href="/recipes/tags/linux/">linux</a>, <a href="/recipes/tags/sound/">sound</a>). </p> <p>Hi experts...</p> <p>A kids level project to do for yourselves...</p> <p>This is a Python DEMO to show the power of the sound card using Linux for a specific usage that I need(ed). It is a kids level project that uses the sound card as a variable DC Voltage reference for projects like stabilised linear PSUs. Why linear? Relatively clean RF wise...</p> <p>The TEST circuit is inside the code and is SOOO simple a dexterous 10 year old could make it in less than an hour and have it up and running to start using...</p> <p>My own circuit is just as simple, isolated, and, gives me MUCH more voltage range than the one inside the code... How did I do it? ;o)</p> <p>This is for Python 2.x.x, (probably even down to 1.5.2) but it would be just as easy to make it work on 3.x.x. I'll let the big guns do that...</p> <p>Enjoy finding simple solutions to often VERY difficult problems...</p> <p>Be aware of word wrapping etc...</p> <p>Bazza, G0LCU...</p>

2007-06-21T14:16:58-07:00Chris Arndthttp://code.activestate.com/recipes/users/1499228/http://code.activestate.com/recipes/521884-play-sound-files-with-pygame-in-a-cross-platform-m/

<p style="color: grey"> Python recipe 521884 by <a href="/recipes/users/1499228/">Chris Arndt</a> (<a href="/recipes/tags/multimedia/">multimedia</a>, <a href="/recipes/tags/pygame/">pygame</a>, <a href="/recipes/tags/sound/">sound</a>, <a href="/recipes/tags/sysadmin/">sysadmin</a>). Revision 4. </p> <p>This simple script shows how to play back a sound file using the mixer module from the pygame library. If you have pygame installed, this will work on all major platforms. The mixer module supports WAV and OGG files with many different sample rates, bits per sample and channels. The script will play back all supported files given on the command line sequentially.</p>

2015-10-22T18:24:08-07:00Vasudev Ramhttp://code.activestate.com/recipes/users/4173351/http://code.activestate.com/recipes/579116-use-pyaudio-to-play-a-list-of-wav-files/

<p style="color: grey"> Python recipe 579116 by <a href="/recipes/users/4173351/">Vasudev Ram</a> (<a href="/recipes/tags/audio/">audio</a>, <a href="/recipes/tags/music/">music</a>, <a href="/recipes/tags/python/">python</a>, <a href="/recipes/tags/python2/">python2</a>, <a href="/recipes/tags/sound/">sound</a>). </p> <p>This recipe shows how to use PyAudio, a 3rd-party Python audio toolkit, to play a list of WAV files on your computer. This is an enhanced version of a basic WAV code example on the PyAudio site. You can specify either one WAV filename on the command line, like this:</p> <p>py pyaudio_play_wav.py chimes.wav</p> <p>or specify a text file containing names of WAV files to play, like this:</p> <p>py pyaudio_play_wav.py -f wav_fil_list.txt</p> <p>The only dependency is PyAudio, which you can install with pip.</p>

2014-11-23T19:24:46-08:00Barry Walkerhttp://code.activestate.com/recipes/users/4177147/http://code.activestate.com/recipes/578971-a-function-to-create-a-1-second-sinewave-wave-beep/

<p style="color: grey"> Python recipe 578971 by <a href="/recipes/users/4177147/">Barry Walker</a> (<a href="/recipes/tags/amiga/">amiga</a>, <a href="/recipes/tags/apple/">apple</a>, <a href="/recipes/tags/audio/">audio</a>, <a href="/recipes/tags/beep/">beep</a>, <a href="/recipes/tags/error_beep/">error_beep</a>, <a href="/recipes/tags/error_sound/">error_sound</a>, <a href="/recipes/tags/e_uae/">e_uae</a>, <a href="/recipes/tags/linux/">linux</a>, <a href="/recipes/tags/sinewave/">sinewave</a>, <a href="/recipes/tags/sound/">sound</a>, <a href="/recipes/tags/wav/">wav</a>, <a href="/recipes/tags/wave/">wave</a>, <a href="/recipes/tags/windows/">windows</a>, <a href="/recipes/tags/winuae/">winuae</a>). </p> <p>sinebeep.py</p> <p>Creating an audio file called...</p> <p>beep.wav</p> <p>...that can be played using almost ANY audio player available.</p> <p>This simple snippet of code generates a 1 second sinewave WAVE file. It IS saved inside the CURRENT drawer so that you can find it... ;o)</p> <p>This works on:- Classic stock AMIGA A1200, using Python 1.4.0. WinUAE and E-UAE, AmigaOS 3.0.x using Python 1.4.0 to 2.0.1. Windows, to at least 7, using Python 2.0.1 to 3.3.2. Various Linux flavours using Python 2.4.6 to 3.2.2. Apple OSX 10.7.x and above using Python 2.5.6 to 3.4.1.</p> <p>The file size is 8044 bytes and _IF_ you need to it can be palyed directly without a player on some Linux flavours that have the /dev/dsp device. It is an 8 bit, unsigned integer, mono, 8000Hz sampling speed 8000 byte RAW file with the WAVE header added.</p> <p>It will still work with PulseAudio and OSS using...</p> <p>cat /full/path/to/beep.wav &gt; /dev/dsp</p> <p>...but with a momenatry click due to the 44 header bytes; but hey it is a beep alternative...</p> <p>Enjoy finding simple solutions to often very difficult problems.</p> <p>Bazza.</p>

2014-02-27T19:36:17-08:00Barry Walkerhttp://code.activestate.com/recipes/users/4177147/http://code.activestate.com/recipes/578837-a-bash-beep-command-for-osx-107/

<p style="color: grey"> Bash recipe 578837 by <a href="/recipes/users/4177147/">Barry Walker</a> (<a href="/recipes/tags/apple/">apple</a>, <a href="/recipes/tags/audio/">audio</a>, <a href="/recipes/tags/bash/">bash</a>, <a href="/recipes/tags/beep/">beep</a>, <a href="/recipes/tags/error_beep/">error_beep</a>, <a href="/recipes/tags/error_sound/">error_sound</a>, <a href="/recipes/tags/linux/">linux</a>, <a href="/recipes/tags/macbook_pro/">macbook_pro</a>, <a href="/recipes/tags/sound/">sound</a>). </p> <p>This small bash script generates an 8044 byte 1KHz sinewave wave file and immediately plays it. The file created is a _pure_ sinewave and lasts for 1 second. It uses the default "afplay" command to run the generated file.</p> <p>It was designed around an Apple Macbook Pro but using "aplay" it might even work on other *nix flavours from the command line. I have not bothered to try it as this was purely for my MB Pro.</p> <p>The wave file can be found as "/tmp/sinewave.wav" during the working session(s) and can be saved anywhere of your choice.</p> <p>Enjoy...</p> <p>(Watch for word wrapping etc...)</p> <p>Bazza.</p>

2013-07-14T19:31:13-07:00Barry Walkerhttp://code.activestate.com/recipes/users/4177147/http://code.activestate.com/recipes/578605-a-fun-bash-shell-bomb-out-error-sound/

<p style="color: grey"> Bash recipe 578605 by <a href="/recipes/users/4177147/">Barry Walker</a> (<a href="/recipes/tags/apple/">apple</a>, <a href="/recipes/tags/audio/">audio</a>, <a href="/recipes/tags/bash/">bash</a>, <a href="/recipes/tags/error_beep/">error_beep</a>, <a href="/recipes/tags/error_sound/">error_sound</a>, <a href="/recipes/tags/linux/">linux</a>, <a href="/recipes/tags/macbook_pro/">macbook_pro</a>, <a href="/recipes/tags/sound/">sound</a>, <a href="/recipes/tags/sound_exchange/">sound_exchange</a>, <a href="/recipes/tags/sox/">sox</a>). </p> <p>Do you remember the Bomb-Out icon(s) that appeared on some computers' SW and HW many years ago...</p> <p>Well this is a matching sound to go with it and can be used as a critical error sound.</p> <p>It sounds like a bomb being dropped from an aeroplane and is purely a shell sript only.</p> <p>It is set up to run SOund eXchange, SOX, but just by editing the code "/dev/dsp" can be used instead.</p> <p>Read the code for more informastion.</p> <p>Enjoy...</p> <p>Bazza...</p>

2013-05-02T17:48:18-07:00Barry Walkerhttp://code.activestate.com/recipes/users/4177147/http://code.activestate.com/recipes/578516-a-sox-1khz-sinewave-generator-using-a-windows-tm-b/

<p style="color: grey"> Batch recipe 578516 by <a href="/recipes/users/4177147/">Barry Walker</a> (<a href="/recipes/tags/audio/">audio</a>, <a href="/recipes/tags/generator/">generator</a>, <a href="/recipes/tags/sound/">sound</a>, <a href="/recipes/tags/sound_exchange/">sound_exchange</a>, <a href="/recipes/tags/sox/">sox</a>, <a href="/recipes/tags/windows/">windows</a>). </p> <p>32 bit Windows to Windows 7...</p> <p>This batch file generates a 65536 byte binary file to give 8 seconds of pure sinewave at the earphone/speaker output(s)...</p> <p>It uses ONLY a default Windows 32 bit installation, to Windows 7, except for the installation of SOX...</p> <p>Obtain SOX from here:-</p> <p><a href="http://sox.sourceforge.net/" rel="nofollow">http://sox.sourceforge.net/</a></p> <p>Notepad was the _main_ editor... ;o)</p> <p>Hopefully the code section does NOT corrupt the binary part which is 8 bytes in size. If it does then let me know on here and I will post a pointer from where to grab it...</p> <p>Enjoy...</p>

2013-03-01T19:41:47-08:00Barry Walkerhttp://code.activestate.com/recipes/users/4177147/http://code.activestate.com/recipes/578477-demo-generate-a-crude-1khz-sinewave-using-a-bash-s/

<p style="color: grey"> Bash recipe 578477 by <a href="/recipes/users/4177147/">Barry Walker</a> (<a href="/recipes/tags/audio/">audio</a>, <a href="/recipes/tags/bash/">bash</a>, <a href="/recipes/tags/demo/">demo</a>, <a href="/recipes/tags/generator/">generator</a>, <a href="/recipes/tags/linux/">linux</a>, <a href="/recipes/tags/shell/">shell</a>, <a href="/recipes/tags/sinewave/">sinewave</a>, <a href="/recipes/tags/sound/">sound</a>). </p> <p>A very simple crude sinewave generator using a BASH script inside a Linux Terminal.</p> <p>The file required is generated inside the code and requires /dev/audio to work.</p> <p>Ensure you have this device, if not the download oss-compat from your OS's repository...</p> <p>It lasts for about 8 seconds before exiting and saves a 65536 byte file to your working directory/drawer/folder as sinewave.raw.</p> <p>Use an oscilloscope to check the waveform generated...</p> <p>It is entirely Public Domain and you may do with it as you please...</p> <p>Enjoy finding simple solutions to often very difficult problems... ;o)</p> <p>Bazza, G0LCU...</p>

2013-02-09T10:21:39-08:00Barry Walkerhttp://code.activestate.com/recipes/users/4177147/http://code.activestate.com/recipes/578451-demo-kids-level-python-rf-attenuator/

<p style="color: grey"> Python recipe 578451 by <a href="/recipes/users/4177147/">Barry Walker</a> (<a href="/recipes/tags/apple/">apple</a>, <a href="/recipes/tags/attenuator/">attenuator</a>, <a href="/recipes/tags/audio/">audio</a>, <a href="/recipes/tags/demo/">demo</a>, <a href="/recipes/tags/linux/">linux</a>, <a href="/recipes/tags/macbook_pro/">macbook_pro</a>, <a href="/recipes/tags/rf/">rf</a>, <a href="/recipes/tags/sound/">sound</a>, <a href="/recipes/tags/windows/">windows</a>). </p> <p>This code is a DEMO RF Attenuator for SW listeners.</p> <p>(The code is to show how to generate the same waveform in each channel but in antiphase, as bridge output. The RF Attenuator is just a byproduct...)</p> <p>The circuit has an insertion loss of about 10dB at full gain but that doesn't matter as it IS an attenuator after all.</p> <p>It is another learning tool for kids to build and code for themselves.</p> <p>The only common user I/O on desktops, netbooks, laptops and current MacBooks is/are the Audio Mic and Ear sockets...</p> <p>This goes for "mobiles" too...</p> <p>The circuit inside the code is so easy a 10 year old could have a working unit inisde 2 hours to experiment with...</p> <p>PyAudio IS needed for this to work and although originally designed around a MacBook Pro 13 inch OSX 10.7.5 and Python 2.6.7 has shown itself to be near platform independent...</p> <p>Read the code for much more information...</p> <p>Enjoy finding simple solutions to often very difficult problems... ;o)</p> <p>Bazza, G0LCU...</p>

2012-11-25T10:10:45-08:00Barry Walkerhttp://code.activestate.com/recipes/users/4177147/http://code.activestate.com/recipes/578350-platform-independent-white-noise-generator/

<p style="color: grey"> Python recipe 578350 by <a href="/recipes/users/4177147/">Barry Walker</a> (<a href="/recipes/tags/apple/">apple</a>, <a href="/recipes/tags/audio/">audio</a>, <a href="/recipes/tags/demo/">demo</a>, <a href="/recipes/tags/generator/">generator</a>, <a href="/recipes/tags/linux/">linux</a>, <a href="/recipes/tags/macbook_pro/">macbook_pro</a>, <a href="/recipes/tags/noise/">noise</a>, <a href="/recipes/tags/program/">program</a>, <a href="/recipes/tags/pyaudio/">pyaudio</a>, <a href="/recipes/tags/signal/">signal</a>, <a href="/recipes/tags/sound/">sound</a>, <a href="/recipes/tags/source/">source</a>, <a href="/recipes/tags/windows/">windows</a>). </p> <p>This code is a derivative of the Pure Sinewave Generator and produces a continuous noise out of the speakers or headphone sockets.</p> <p>It is for the hobbyist to be able to generate a pseudo-random noise signal for testing with.</p> <p>It is issued as Public Domian and you may do with it as you please.</p> <p>It is very easy to convert to Python 3.x.x but as OSX only has 2.7.x and lower ATM then these are what are used...</p> <p>An installation of pyaudio IS needed for this to work; see the code for more information.</p> <p>It is near platform independent but sadly the AMIGA is not included, but hey, I have already shown how generate sound for Classic AMIGAs.</p> <p>Enjoy finding simple solutions to often very difficult problems...</p> <p>Bazza, G0LCU...</p>

2012-10-23T12:53:37-07:00Barry Walkerhttp://code.activestate.com/recipes/users/4177147/http://code.activestate.com/recipes/578301-platform-independent-1khz-pure-audio-sinewave-gene/

<p style="color: grey"> Python recipe 578301 by <a href="/recipes/users/4177147/">Barry Walker</a> (<a href="/recipes/tags/apple/">apple</a>, <a href="/recipes/tags/audio/">audio</a>, <a href="/recipes/tags/demo/">demo</a>, <a href="/recipes/tags/generator/">generator</a>, <a href="/recipes/tags/linux/">linux</a>, <a href="/recipes/tags/macbook_pro/">macbook_pro</a>, <a href="/recipes/tags/program/">program</a>, <a href="/recipes/tags/pyaudio/">pyaudio</a>, <a href="/recipes/tags/signal/">signal</a>, <a href="/recipes/tags/sinewave/">sinewave</a>, <a href="/recipes/tags/sound/">sound</a>, <a href="/recipes/tags/source/">source</a>, <a href="/recipes/tags/windows/">windows</a>). Revision 2. </p> <p>IKHz_SW_OSX.py</p> <p>A mono _pure_ sinewave generator using standard text mode Python 2.6.7 to at least 2.7.3.</p> <p>This DEMO kids level 1KHz generator is mainly for a MacBook Pro, (13 inch in my case), OSX 10.7.5 and above. See below...</p> <p>It is another simple piece of testgear for the young amateur electronics enthusiast and uses pyaudio fully installed for it to work.</p> <p>PyAudio can be obtained from here:- <a href="http://people.csail.mit.edu/hubert/pyaudio/" rel="nofollow">http://people.csail.mit.edu/hubert/pyaudio/</a></p> <p>This was primarily for a MacBook Pro, but works on at least 2 Linux flavours and Windows Vista 32 bit...</p> <p>The sinewave generated is near excellent...</p> <p>Enjoy finding simple solutions to often very difficult problems... Bazza, G0LCU...</p>

2012-10-07T14:15:55-07:00Barry Walkerhttp://code.activestate.com/recipes/users/4177147/http://code.activestate.com/recipes/578282-for-macbook_pro-heads-only-simple-lf-audio-oscillo/

<p style="color: grey"> Python recipe 578282 by <a href="/recipes/users/4177147/">Barry Walker</a> (<a href="/recipes/tags/anim/">anim</a>, <a href="/recipes/tags/apple/">apple</a>, <a href="/recipes/tags/audio/">audio</a>, <a href="/recipes/tags/demo/">demo</a>, <a href="/recipes/tags/display/">display</a>, <a href="/recipes/tags/macbook_pro/">macbook_pro</a>, <a href="/recipes/tags/oscilloscope/">oscilloscope</a>, <a href="/recipes/tags/pyaudio/">pyaudio</a>, <a href="/recipes/tags/scope/">scope</a>, <a href="/recipes/tags/sound/">sound</a>). </p> <p>For MacBook_Pro-Heads Only. Simple LF Audio Oscilloscope Using Standard Text Mode Python.</p> <p>SimpleScope_OSX.py</p> <p>Do you remember this upload from myself on 26-06-2011...</p> <p><a href="http://code.activestate.com/recipes/577771-simple-lf-audio-oscilloscope-using-standard-text-m/?in=user-4177147" rel="nofollow">http://code.activestate.com/recipes/577771-simple-lf-audio-oscilloscope-using-standard-text-m/?in=user-4177147</a></p> <p>Well here is an August 2012 vintage MacBook Pro 13 inch version of it for OSX 10.7.5...</p> <p>This is proof of concept code for a kids level project I am doing for a MacBook Pro, 13 inch, OSX 10.7.5. A DEMO to show how to display a waveform using standard text mode Python. "pyaudio" must be installed for this to work. Levels are set using the standard audio mixers, (System Preferences -> Sound).</p> <p>Just whistle a signal of say 300Hz to 3KHz, (normal voice spectrum), using say, the internal mic, and watch a waveform appear inside the X-Y graticule.</p> <p>Read the code for more information.</p> <p>$VER: SimpleScope_OSX.py_Version_0.00.10_(C)2012_B.Walker_G0LCU.</p> <p>This code is GPL2, but, the hardware information is Public Domain.</p> <p>(I am looking into including Windows and Linux variants too using pyaudio to access the sound system.)</p> <p>Enjoy finding simple solutions to often very difficult problems.</p> <p>Bazza, G0LCU...</p>

2012-08-02T18:05:29-07:00Barry Walkerhttp://code.activestate.com/recipes/users/4177147/http://code.activestate.com/recipes/578232-a-crude-baby-alarm-for-standard-text-mode-python-a/

<p style="color: grey"> Python recipe 578232 by <a href="/recipes/users/4177147/">Barry Walker</a> (<a href="/recipes/tags/alarm/">alarm</a>, <a href="/recipes/tags/audio/">audio</a>, <a href="/recipes/tags/baby_alarm/">baby_alarm</a>, <a href="/recipes/tags/linux/">linux</a>, <a href="/recipes/tags/sound/">sound</a>). </p> <p>This is a simple audio monitor that records about 1/2 second of sound then immediately plays it back in a continuous loop.</p> <p>If you are testing with a laptop's, (etc), internal microphone be aware that acoustic feedback might occur...</p> <p>This could be a use for your now aging netbook... ;o)</p> <p>Bazza, G0LCU...</p>

2012-07-15T18:38:43-07:00Barry Walkerhttp://code.activestate.com/recipes/users/4177147/http://code.activestate.com/recipes/578216-flash_n_fade-using-standard-text-mode-python-for-l/

<p style="color: grey"> Python recipe 578216 by <a href="/recipes/users/4177147/">Barry Walker</a> (<a href="/recipes/tags/audio/">audio</a>, <a href="/recipes/tags/demo/">demo</a>, <a href="/recipes/tags/fade/">fade</a>, <a href="/recipes/tags/flash/">flash</a>, <a href="/recipes/tags/linux/">linux</a>, <a href="/recipes/tags/sound/">sound</a>, <a href="/recipes/tags/windows/">windows</a>). </p> <p>This DEMO shows how to fade text in shades of grey and also flash with inverse_flash along with simultaneous differing frequency beeps.</p> <p>There are 2 code snippets that WILL need to be separated before use. One is a Linux version and the other a Windows 32 bit version. There is an AMIGA version but that is for much later.</p> <p>There are NO notes inside the code so you will have to see the code as to how it works. It is SOOO simple that notes are/were unnecessary...</p> <p>Bazza, G0LCU...</p>

2012-07-01T19:54:17-07:00FB36http://code.activestate.com/recipes/users/4172570/http://code.activestate.com/recipes/578180-random-sound-fx-using-wav-file/

<p style="color: grey"> Python recipe 578180 by <a href="/recipes/users/4172570/">FB36</a> (<a href="/recipes/tags/audio/">audio</a>, <a href="/recipes/tags/sound/">sound</a>). </p> <p>It generates random sound effects using AM and FM.</p>

2012-06-19T00:41:22-07:00FB36http://code.activestate.com/recipes/users/4172570/http://code.activestate.com/recipes/578168-sound-generator-using-wav-file/

<p style="color: grey"> Python recipe 578168 by <a href="/recipes/users/4172570/">FB36</a> (<a href="/recipes/tags/audio/">audio</a>, <a href="/recipes/tags/sound/">sound</a>). </p> <p>This is an example for generating sound using wave files. It is equivalent to:</p> <p>from winsound import Beep</p> <p>Beep(freq, duration * 1000)</p> <p>But of course wave files can also be used to generate any other kinds of sounds. </p>