Popular recipes tagged "audio" but not "sox"

A white noise generator to sooth baby to sleep. (Bash)

2017-05-13T12:12:30-07:00

Bash recipe 580801 by Barry Walker (alarm, apple, audio, baby_alarm, cygwin, linux, noise, sleep, sound, whitenoise).

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.

Usage:- [./]shush.sh <time in seconds from 18 to 2700> [sensitivity [Hh|Mm|Ll]]<CR>

If time is omitted it defaults to 2 bursts of 9 seconds each and if sensitivity is omitted defaults to [M]edium.

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.

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.

Enjoy...

A command-line musical alarm clock (Python)

2016-12-30T19:06:32-08:00

Python recipe 580739 by Vasudev Ram (alarm, audio, clock, multimedia, music, playsound, python, time, utilities, utility).

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.

Use PyAudio to play a list of WAV files (Python)

2015-10-22T18:24:08-07:00

Python recipe 579116 by Vasudev Ram (audio, music, python, python2, sound).

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:

py pyaudio_play_wav.py chimes.wav

or specify a text file containing names of WAV files to play, like this:

py pyaudio_play_wav.py -f wav_fil_list.txt

The only dependency is PyAudio, which you can install with pip.

Simple audio with ctypes and SDL also for Tkinter (Python)

2015-08-17T18:54:17-07:00

Python recipe 579070 by Jiri Justra (audio, sdl, sdl_mixer, tkinter). Revision 3.

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.

It should work for Win and *nix also .. I've tested it on ubuntu-14.04.3-desktop-i386

A Function To Create A 1 Second Sinewave WAVE Beep File. (Python)

2014-11-23T19:24:46-08:00

Python recipe 578971 by Barry Walker (amiga, apple, audio, beep, error_beep, error_sound, e_uae, linux, sinewave, sound, wav, wave, windows, winuae).

sinebeep.py

Creating an audio file called...

beep.wav

...that can be played using almost ANY audio player available.

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)

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.

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.

It will still work with PulseAudio and OSS using...

cat /full/path/to/beep.wav > /dev/dsp

...but with a momenatry click due to the 44 header bytes; but hey it is a beep alternative...

Enjoy finding simple solutions to often very difficult problems.

Bazza.

Not Quite So Simple QuickTime Player, Python Audio Capture. (Python)

2014-11-08T19:10:58-08:00

Python recipe 578960 by Barry Walker (apple, audio, audio_capture, capture, macbook_pro, maccbook_pro, sample, signal_capture).

Not Quite So Simple QuickTime Player, Python Audio Capture.

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.

It uses default shell system files to do the task.

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...

This is again a means a signal capture for an AudioScope without the need for special tools or installs.

Read the code for more information.

IMPORTANT!!! This DEMO WILL delete all *.aifc files inside the default $HOME/Movies directory, so be aware.

A simple ALSA one is on its way too...

It actually works on Python 3.4.1 but I have no idea if it works below Python 2.5.6...

Bazza...

Simple Audio Capture For Windows... (Python)

2014-10-17T14:39:16-07:00

Python recipe 578952 by Barry Walker (audio, audio_capture, capture, sample, signal_capture, windows).

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).

Enjoy finding simple solutions to very difficult problems...

(An OSX version is on its way too...)

Bazza...

A Bash Beep Command For OSX 10.7+... (Bash)

2014-02-27T19:36:17-08:00

Bash recipe 578837 by Barry Walker (apple, audio, bash, beep, error_beep, error_sound, linux, macbook_pro, sound).

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.

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.

The wave file can be found as "/tmp/sinewave.wav" during the working session(s) and can be saved anywhere of your choice.

Enjoy...

(Watch for word wrapping etc...)

Bazza.

Recursive Multimedia (audio, video) M3U Playlist Generator (Python)

2014-02-08T01:03:36-08:00

Python recipe 578771 by Mano Bastardo (audio, ffmpeg, generate, m3u, mulitmedia, os, playlist, python, system, video). Revision 9.

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 FFmpeg available.

How to stream an mp3 file using vlc.py, with a simple TKinter GUI. (Python)

2013-06-09T12:52:30-07:00

Python recipe 578556 by Anton Vredegoor (audio, streaming, tkinter, vlc).

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.

Wav audio file dynamic range compressor (C)

2013-04-18T15:04:25-07:00

C recipe 578510 by Granning Stoline (audio, compressor, dynamic, file, range, wav). Revision 4.

Wav audio file dynamic range compressor

DEMO - Generate A Crude 1KHz Sinewave Using A BASH Script. (Bash)

2013-03-01T19:41:47-08:00

Bash recipe 578477 by Barry Walker (audio, bash, demo, generator, linux, shell, sinewave, sound).

A very simple crude sinewave generator using a BASH script inside a Linux Terminal.

The file required is generated inside the code and requires /dev/audio to work.

Ensure you have this device, if not the download oss-compat from your OS's repository...

It lasts for about 8 seconds before exiting and saves a 65536 byte file to your working directory/drawer/folder as sinewave.raw.

Use an oscilloscope to check the waveform generated...

It is entirely Public Domain and you may do with it as you please...

Enjoy finding simple solutions to often very difficult problems... ;o)

Bazza, G0LCU...

DEMO Kids Level Python RF Attenuator... (Python)

2013-02-09T10:21:39-08:00

Python recipe 578451 by Barry Walker (apple, attenuator, audio, demo, linux, macbook_pro, rf, sound, windows).

This code is a DEMO RF Attenuator for SW listeners.

(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...)

The circuit has an insertion loss of about 10dB at full gain but that doesn't matter as it IS an attenuator after all.

It is another learning tool for kids to build and code for themselves.

The only common user I/O on desktops, netbooks, laptops and current MacBooks is/are the Audio Mic and Ear sockets...

This goes for "mobiles" too...

The circuit inside the code is so easy a 10 year old could have a working unit inisde 2 hours to experiment with...

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...

Read the code for much more information...

Enjoy finding simple solutions to often very difficult problems... ;o)

Bazza, G0LCU...

Platform Independent White Noise Generator... (Python)

2012-11-25T10:10:45-08:00

Python recipe 578350 by Barry Walker (apple, audio, demo, generator, linux, macbook_pro, noise, program, pyaudio, signal, sound, source, windows).

This code is a derivative of the Pure Sinewave Generator and produces a continuous noise out of the speakers or headphone sockets.

It is for the hobbyist to be able to generate a pseudo-random noise signal for testing with.

It is issued as Public Domian and you may do with it as you please.

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...

An installation of pyaudio IS needed for this to work; see the code for more information.

It is near platform independent but sadly the AMIGA is not included, but hey, I have already shown how generate sound for Classic AMIGAs.

Enjoy finding simple solutions to often very difficult problems...

Bazza, G0LCU...

Platform Independent 1KHz Pure Audio Sinewave Generator... (Python)

2012-10-23T12:53:37-07:00

Python recipe 578301 by Barry Walker (apple, audio, demo, generator, linux, macbook_pro, program, pyaudio, signal, sinewave, sound, source, windows). Revision 2.

IKHz_SW_OSX.py

A mono _pure_ sinewave generator using standard text mode Python 2.6.7 to at least 2.7.3.

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...

It is another simple piece of testgear for the young amateur electronics enthusiast and uses pyaudio fully installed for it to work.

PyAudio can be obtained from here:- http://people.csail.mit.edu/hubert/pyaudio/

This was primarily for a MacBook Pro, but works on at least 2 Linux flavours and Windows Vista 32 bit...

The sinewave generated is near excellent...

Enjoy finding simple solutions to often very difficult problems... Bazza, G0LCU...

For MacBook_Pro-Heads Only. Simple LF Audio Oscilloscope Using Standard Text Mode Python. (Python)

2012-10-07T14:15:55-07:00

Python recipe 578282 by Barry Walker (anim, apple, audio, demo, display, macbook_pro, oscilloscope, pyaudio, scope, sound).

For MacBook_Pro-Heads Only. Simple LF Audio Oscilloscope Using Standard Text Mode Python.

SimpleScope_OSX.py

Do you remember this upload from myself on 26-06-2011...

http://code.activestate.com/recipes/577771-simple-lf-audio-oscilloscope-using-standard-text-m/?in=user-4177147

Well here is an August 2012 vintage MacBook Pro 13 inch version of it for OSX 10.7.5...

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).

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.

Read the code for more information.

This code is GPL2, but, the hardware information is Public Domain.

(I am looking into including Windows and Linux variants too using pyaudio to access the sound system.)

Enjoy finding simple solutions to often very difficult problems.

Bazza, G0LCU...

A Crude Baby Alarm For Standard Text Mode Python And Linux. (Python)

2012-08-02T18:05:29-07:00

Python recipe 578232 by Barry Walker (alarm, audio, baby_alarm, linux, sound).

This is a simple audio monitor that records about 1/2 second of sound then immediately plays it back in a continuous loop.

If you are testing with a laptop's, (etc), internal microphone be aware that acoustic feedback might occur...

This could be a use for your now aging netbook... ;o)

Bazza, G0LCU...

Sound Generator Using WAV file (Python)

2012-06-19T00:41:22-07:00

Python recipe 578168 by FB36 (audio, sound).

This is an example for generating sound using wave files. It is equivalent to:

from winsound import Beep

Beep(freq, duration * 1000)

But of course wave files can also be used to generate any other kinds of sounds.

Flash_N_Fade Using Standard Text Mode Python For Linux And Windows... (Python)

2012-07-15T18:38:43-07:00

Python recipe 578216 by Barry Walker (audio, demo, fade, flash, linux, sound, windows).

This DEMO shows how to fade text in shades of grey and also flash with inverse_flash along with simultaneous differing frequency beeps.

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.

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...

Bazza, G0LCU...

Random Sound FX Using WAV File (Python)

2012-07-01T19:54:17-07:00

Python recipe 578180 by FB36 (audio, sound).

It generates random sound effects using AM and FM.