search for tool to create audio snippets of given frequency

ford prefect · 2014-05-19 10:42:38

hi there,

for some research i need to create audiosnippets (in whatever format) with certain frequencies.
i remember using such a tool once which was also capable of generating linear changes in freq.

does anybody have an idea of the name of that tool (or another similar), that could do the job?

some tools (like audacity) might also be capable, but i prefer to work from commandline.

thanks

o_caino · 2014-05-19 11:03:20

I remember using sox for that purpose.
I used something inspired in this http://www.commandlinefu.com/commands/v … 1-to-99-hz

Trilby · 2014-05-19 11:13:09

[extra]/sox will do it with the 'synth' option. You can generate different frequencies on different channels, add all sorts of audio effects or manipulations, etc.

ford prefect · 2014-05-19 13:06:16

thanks, sox works for now. it seems to be the ultimate powerfull weapon on audioproduction.
for the record, i used this code:

sox -nt wav -r44100 -c2 440.wav synth 5 sine 440

if still somebody has an idea about the programm i once used, that'd be great.

emeres · 2014-05-19 19:12:29

You could play around with sbagen, although it is for brainwave "entertainment". One example:

$ sbagen test.sbg; cat test.sbg
off: -
a1: 100/100 
a2: 180/100
NOW+00:00 a1 ->
NOW+00:02 a2
NOW+00:03 off

This gives you a linear transition from 100 Hz (full volume) to 180 Hz over a period of two minutes. Then sustains 180 Hz for approximately 1 minute and fades out.

Last edited by emeres (2014-05-19 19:24:22)

DrZaius · 2014-05-19 20:00:18

ffmpeg is another option. Example using the sine audio filter for 5 second output:

ffmpeg -f lavfi -i sine=440 -t 5 output.wav

See the docs for more options and examples.

skunktrader · 2014-05-20 06:31:24

If want something with a gui, then audacity has a dialog that can generate sine/square/sawtooth waves

emeres · 2014-05-20 11:22:56

Ecasound would be another option:

ecasound -i:tone,sine,440,5

Or if you like to get your hands dirty, generate whatever signal [transition] you want in python and export it wav.

Arch Linux

#1 2014-05-19 10:42:38

search for tool to create audio snippets of given frequency

#2 2014-05-19 11:03:20

Re: search for tool to create audio snippets of given frequency

#3 2014-05-19 11:13:09

Re: search for tool to create audio snippets of given frequency

#4 2014-05-19 13:06:16

Re: search for tool to create audio snippets of given frequency

#5 2014-05-19 19:12:29

Re: search for tool to create audio snippets of given frequency

#6 2014-05-19 20:00:18

Re: search for tool to create audio snippets of given frequency

#7 2014-05-20 06:31:24

Re: search for tool to create audio snippets of given frequency

#8 2014-05-20 11:22:56

Re: search for tool to create audio snippets of given frequency

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