Top-rated recipes tagged "audio" Code RecipesSeven Bit Colored Analogue Bar Graph Generator DEMO... (Python) 2011-03-17T22:14:52-07:00Barry Walker <p style="color: grey"> Python recipe 577612 by <a href="/recipes/users/4177147/">Barry Walker</a> (<a href="/recipes/tags/analogue/">analogue</a>, <a href="/recipes/tags/anim/">anim</a>, <a href="/recipes/tags/audio/">audio</a>, <a href="/recipes/tags/bargraph/">bargraph</a>, <a href="/recipes/tags/color/">color</a>, <a href="/recipes/tags/colour/">colour</a>, <a href="/recipes/tags/demo/">demo</a>, <a href="/recipes/tags/display/">display</a>, <a href="/recipes/tags/linux/">linux</a>). Revision 3. </p> <p>..For STANDARD Python 2.6 and above...</p> <p>This code will display a horizontal full colour analogue "VU" style meter. It displays green for normal, yellow for warning and red for danger with a critical error beep near the end of full scale, at value 120+.</p> <p>This version is for Python 2.6 and above and only for the Linux, (*nix?), platform.</p> <p>It is an "at a glance" display that is in colour rather than having to read say a digitally generated number.</p> <p>A Python 3.x version can be found here:-</p> <p><a href="" rel="nofollow"></a></p> <p>This has uses "for at a glance" voltmeters, ammeters, data-loggers, anemometers etc, etc...</p> <p>Watch for wordwrapping etc...</p> <p>NOTE:- This is Public Domain and you may do with it as you please.</p> <p>73...</p> <p>Bazza, G0LCU...</p> <p>Team AMIGA...</p> A white noise generator to sooth baby to sleep. (Bash) 2017-05-13T12:12:30-07:00Barry Walker <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:- [./] &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> A command-line musical alarm clock (Python) 2016-12-30T19:06:32-08:00Vasudev Ram <p style="color: grey"> Python recipe 580739 by <a href="/recipes/users/4173351/">Vasudev Ram</a> (<a href="/recipes/tags/alarm/">alarm</a>, <a href="/recipes/tags/audio/">audio</a>, <a href="/recipes/tags/clock/">clock</a>, <a href="/recipes/tags/multimedia/">multimedia</a>, <a href="/recipes/tags/music/">music</a>, <a href="/recipes/tags/playsound/">playsound</a>, <a href="/recipes/tags/python/">python</a>, <a href="/recipes/tags/time/">time</a>, <a href="/recipes/tags/utilities/">utilities</a>, <a href="/recipes/tags/utility/">utility</a>). </p> <p>This is a simple musical alarm clock in Python. You pass a command-line argument specifying the time in minutes after which the alarm should go off. When that time arrives, it plays a musical sound.</p> Yet Another Python Generator... (Python) 2011-12-19T08:14:55-08:00Barry Walker <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="" rel="nofollow"></a></p> <p>Enjoy finding simple solutions to often VERY difficult problems...</p> <p>Bazza, G0LCU...</p> For AMIGA-Heads Only. Generating An Audio Signal In Text Mode Python. (Python) 2011-11-30T21:23:20-08:00Barry Walker <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> A DEMO Frequency Counter With A Difference - Text Mode Python. (Python) 2011-11-21T18:00:43-08:00Barry Walker <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> And Now For Something COMPLETELY Different Using Text Mode Python... (Python) 2011-10-26T19:24:32-07:00Barry Walker <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> Use PyAudio to play a list of WAV files (Python) 2015-10-22T18:24:08-07:00Vasudev Ram <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 chimes.wav</p> <p>or specify a text file containing names of WAV files to play, like this:</p> <p>py -f wav_fil_list.txt</p> <p>The only dependency is PyAudio, which you can install with pip.</p> Simple audio with ctypes and SDL also for Tkinter (Python) 2015-08-17T18:54:17-07:00Jiri Justra <p style="color: grey"> Python recipe 579070 by <a href="/recipes/users/4192188/">Jiri Justra</a> (<a href="/recipes/tags/audio/">audio</a>, <a href="/recipes/tags/sdl/">sdl</a>, <a href="/recipes/tags/sdl_mixer/">sdl_mixer</a>, <a href="/recipes/tags/tkinter/">tkinter</a>). Revision 3. </p> <p>I've needed just to play audio in my Tkinter application, but it seems there is no easy way to do this, so I have made this simple code. It is small ctypes wrapper around SDL_mixer.</p> <p>It should work for Win and *nix also .. I've tested it on ubuntu-14.04.3-desktop-i386</p> A Function To Create A 1 Second Sinewave WAVE Beep File. (Python) 2014-11-23T19:24:46-08:00Barry Walker <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></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> Not Quite So Simple QuickTime Player, Python Audio Capture. (Python) 2014-11-08T19:10:58-08:00Barry Walker <p style="color: grey"> Python recipe 578960 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/audio_capture/">audio_capture</a>, <a href="/recipes/tags/capture/">capture</a>, <a href="/recipes/tags/macbook_pro/">macbook_pro</a>, <a href="/recipes/tags/maccbook_pro/">maccbook_pro</a>, <a href="/recipes/tags/sample/">sample</a>, <a href="/recipes/tags/signal_capture/">signal_capture</a>). </p> <p>Not Quite So Simple QuickTime Player, Python Audio Capture.</p> <p>This DEMO code captures a function to generate a user 5 second Audio sample in Apple *.aifc format. It is then converted to DC quailty *.WAV format.</p> <p>It uses default shell system files to do the task.</p> <p>An AppleScript is created to do the sample but due to the limitations of QT Player there is a 1.5 second delay to allow QuickTine Player to start up. It is not entirely quiet but unobtrusive enough as to be like quiet mode...</p> <p>This is again a means a signal capture for an AudioScope without the need for special tools or installs.</p> <p>Read the code for more information.</p> <p>IMPORTANT!!! This DEMO WILL delete all *.aifc files inside the default $HOME/Movies directory, so be aware.</p> <p>A simple ALSA one is on its way too...</p> <p>It actually works on Python 3.4.1 but I have no idea if it works below Python 2.5.6...</p> <p>Bazza...</p> Simple Audio Capture For Windows... (Python) 2014-10-17T14:39:16-07:00Barry Walker <p style="color: grey"> Python recipe 578952 by <a href="/recipes/users/4177147/">Barry Walker</a> (<a href="/recipes/tags/audio/">audio</a>, <a href="/recipes/tags/audio_capture/">audio_capture</a>, <a href="/recipes/tags/capture/">capture</a>, <a href="/recipes/tags/sample/">sample</a>, <a href="/recipes/tags/signal_capture/">signal_capture</a>, <a href="/recipes/tags/windows/">windows</a>). </p> <p>This snippet will capture from approximately 1 second to nearly 10000 hours of audio silently using Windows SoundRecorder.exe and save automatically to a file named SAMPLE.WAV in the C:\Windows\Temp\ folder/drawer/directory. It is 16 bit signed integer depth, stereo and sampled at 44100 Hz. This is for Python 2.0.1 to 3.3.2, (my latest version).</p> <p>Enjoy finding simple solutions to very difficult problems...</p> <p>(An OSX version is on its way too...)</p> <p>Bazza...</p> A Bash Beep Command For OSX 10.7+... (Bash) 2014-02-27T19:36:17-08:00Barry Walker <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> Recursive Multimedia (audio, video) M3U Playlist Generator (Python) 2014-02-08T01:03:36-08:00Mano Bastardo <p style="color: grey"> Python recipe 578771 by <a href="/recipes/users/4182040/">Mano Bastardo</a> (<a href="/recipes/tags/audio/">audio</a>, <a href="/recipes/tags/ffmpeg/">ffmpeg</a>, <a href="/recipes/tags/generate/">generate</a>, <a href="/recipes/tags/m3u/">m3u</a>, <a href="/recipes/tags/mulitmedia/">mulitmedia</a>, <a href="/recipes/tags/os/">os</a>, <a href="/recipes/tags/playlist/">playlist</a>, <a href="/recipes/tags/python/">python</a>, <a href="/recipes/tags/system/">system</a>, <a href="/recipes/tags/video/">video</a>). Revision 9. </p> <p>Generate an m3u playlist searching recursively for multimedia files (video or audio) in the given directory. Information from ID3 tags will be extracted for audio files with <a href="">FFmpeg</a> available.</p> A FUN Bash Shell Bomb-Out Error Sound... (Bash) 2013-07-14T19:31:13-07:00Barry Walker <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> Bash Script For An Oscilloscope... (Bash) 2013-06-19T19:06:50-07:00Barry Walker <p style="color: grey"> Bash recipe 578570 by <a href="/recipes/users/4177147/">Barry Walker</a> (<a href="/recipes/tags/anim/">anim</a>, <a href="/recipes/tags/audio/">audio</a>, <a href="/recipes/tags/audioscope/">audioscope</a>, <a href="/recipes/tags/bash/">bash</a>, <a href="/recipes/tags/oscilloscope/">oscilloscope</a>, <a href="/recipes/tags/scope/">scope</a>, <a href="/recipes/tags/script/">script</a>, <a href="/recipes/tags/sound_exchange/">sound_exchange</a>, <a href="/recipes/tags/sox/">sox</a>, <a href="/recipes/tags/terminal/">terminal</a>). </p> <p>This code is the latest as of 19-06-2013. It is an AudioScope designed around a Macbook Pro 13" of which only has ONE microphone input. It works under Linux variants too. Read the code for much more info.</p> <p>It was my way of learning Bash scripting.</p> <p>It is resident here at this site:-</p> <p><a href="" rel="nofollow"></a></p> <p>It started off as a fun idea and is now becoming a very serious project.</p> <p>As it stands this is fully working but it is uncalibrated and this is where it will stay on this site.</p> <p>As the above site is the host then all future uploads will be there...</p> <p>To do list...</p> <p>DC input. [1] DC polarity. [1] 2 more Internal sync modes. External triggering. Zoom facility - if possible in text mode. Vertical calibration. [2] Frequency measurement. {3] (Others.)</p> <p>[1] I have simple HW built as an idea but yet to prove it... [2] Preliminary HW built but not yet used. Calibration SW and circuit(s) to be built into script as it progresses. [3] I already have a working script but not completely satisfied at it at this point...</p> <p>I am noing to say much else except that it has already been given a 5 star rating on the above UNIX site...</p> <p>As it stands this code is entirely Public Domian and you may do with it as you please...</p> <p>Enjoy something completely different using Bash scripting...</p> <p>Finally the code defaults to a DEMO mode which requires no HW access at all but everything is still functional...</p> <p>__Thoroughly__ read the code for more information...</p> <p>As a circuit is inside the script then it is best viewed in plan text mode.</p> <p>Bazza, G0LCU.</p> How to stream an mp3 file using, with a simple TKinter GUI. (Python) 2013-06-09T12:52:30-07:00Anton Vredegoor <p style="color: grey"> Python recipe 578556 by <a href="/recipes/users/2667360/">Anton Vredegoor</a> (<a href="/recipes/tags/audio/">audio</a>, <a href="/recipes/tags/streaming/">streaming</a>, <a href="/recipes/tags/tkinter/">tkinter</a>, <a href="/recipes/tags/vlc/">vlc</a>). </p> <p>This script can be used to stream an existing mp3 file to multiple computers. It has a simple Tkinter GUI with only one button to start/stop the stream, and a slider to indicate or change the position.</p> A SOX 1KHz Sinewave Generator Using A Windows, (TM), Batch File... (Batch) 2013-05-02T17:48:18-07:00Barry Walker <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="" rel="nofollow"></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> Wav audio file dynamic range compressor (C) 2013-04-18T15:04:25-07:00Granning Stoline <p style="color: grey"> C recipe 578510 by <a href="/recipes/users/4186069/">Granning Stoline</a> (<a href="/recipes/tags/audio/">audio</a>, <a href="/recipes/tags/compressor/">compressor</a>, <a href="/recipes/tags/dynamic/">dynamic</a>, <a href="/recipes/tags/file/">file</a>, <a href="/recipes/tags/range/">range</a>, <a href="/recipes/tags/wav/">wav</a>). Revision 4. </p> <p>Wav audio file dynamic range compressor</p> DEMO - Generate A Crude 1KHz Sinewave Using A BASH Script. (Bash) 2013-03-01T19:41:47-08:00Barry Walker <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>