sox is a command line audio tool. I use it from time to time to automate some audio related activities. I play guitar from time to time, and I do like the idea of tuning my guitar by simply listening to the note. Now there’s a ton of apps out there that can do the trick, but I decided to create an audio file that I can copy onto my phone, and use it to tune my guitar wherever I may be.
A standard guitar is tuned E (164.81 Hz), A (220 Hz), D (293.66 Hz), G (392 Hz), B (493.88 Hz), E (659.26 Hz). Using a simple script, I spliced it together, and generated this little file. Easy enough.
# == generate the individual tones sox -n -r 8000 1.wav synth 5 sine 164.81 sox -n -r 8000 2.wav synth 5 sine 220 sox -n -r 8000 3.wav synth 5 sine 293.66 sox -n -r 8000 4.wav synth 5 sine 392 sox -n -r 8000 5.wav synth 5 sine 493.88 sox -n -r 8000 6.wav synth 5 sine 659.26 # == merge them into a single file sox 1.wav 2.wav 3.wav 4.wav 5.wav 6.wav guitar.wav # == encode it to an mp3 lame -m s -b 64 guitar.wav guitar.mp3
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