diff --git a/README.md b/README.md index 26d01f0..ff2d2d9 100644 --- a/README.md +++ b/README.md @@ -1,8 +1,12 @@ # MorsePy -Simple set of python functions to translate alphanumeric characters to morse code and back +`morse.py` contains a simple set of python functions to translate alphanumeric characters to morse code and back -## Example output +`morse_sound.py` generates base 64 encoded strings of the dit and dah sounds for use in the HTML5 page. + +The wave sounds are a 800Hz tone, 100ms and 300ms for dit and dah respectively, at a framerate of 4.410 Khz. + +## Example output for morse.py ``` -------------------------------------------------------------- @@ -23,4 +27,19 @@ Original: WIERD CHARS # IS !@#$%^&*()<> BLOOP and Back: WIERD CHARS IS !@$&() BLOOP Valid? No -------------------------------------------------------------- +``` + +## Dit/Dah output + + +### Dit + +``` 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 +``` + +#### Dah + +``` 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 ``` \ No newline at end of file diff --git a/morse_sound.py b/morse_sound.py new file mode 100644 index 0000000..b3b6697 --- /dev/null +++ b/morse_sound.py @@ -0,0 +1,71 @@ +# This file generates the morse code dits and dahs sounds +# as base 64 encoded strings for use in the HTML5/Javsacript page +import base64 +from io import BytesIO +import numpy as np +import struct +import wave + +# Code based off of this answer http://stackoverflow.com/a/33246354/2574639 +def sine_samples(freq, duration, framerate=44100, amplitude=0.5): + # Get (sample rate * duration) samples on X axis + # (between freq oscillations of 2pi) + X = (2*np.pi*freq/framerate) * np.arange(framerate*duration) + + # Get sine values for these X axis samples (as integers) + S = (amplitude*32767*np.sin(X)).astype(int) + + # Pack integers as signed "short" integers (-32767 to 32767) + as_packed_bytes = (map(lambda v:struct.pack('h',v), S)) + return as_packed_bytes + +def output_wave(path, frames, framerate=44100): + with wave.open(path,'w') as output: + # Set parameters for output WAV file + # (1 channel, 2 bytes per sample, framerate, num frames, no compression, no compression) + output.setparams((1,2,framerate,0,'NONE','not compressed')) + output.writeframes(frames) + +def output_sound(path, freq, dur, framerate=44100): + # join the packed bytes into a single bytes frame + frames = b''.join(sine_samples(freq,dur, framerate)) + + # output frames to file + output_wave(path, frames, framerate) + +def output_base64(freq, dur, framerate=44100): + """Return Base 64 encoded string of wave file""" + data_buffer = BytesIO() + output_sound(data_buffer, freq, dur, framerate) + return base64.b64encode(data_buffer.getvalue()) + + +# We'll use a low 4.41khz framerate for our audio to reduce the string length +framerate = 4410 +beep_freq = 800 # Hz +beep_duration = 0.1 # seconds + +# # We could just write a wav file directly +# output_sound('dit.wav', 800, beep_duration, framerate) +# output_sound('dah.wav', 800, beep_duration*3, framerate) + +# Instead of writing to file, and then reading from file to convert to base64 +# We'll keep it in memory using ByteIO + +dit_b64 = output_base64(beep_freq, beep_duration, framerate) +dah_b64 = output_base64(beep_freq, beep_duration*3, framerate) +# Write to text file for usage with html5 web audio +with open('dit_base64.txt','w') as f: + f.write(dit_b64.decode('utf8')) +with open('dah_base64.txt','w') as f: + f.write(dah_b64.decode('utf8')) + +# Alternatively print to console +print("Dit (%d):\n%s" % (len(dit_b64), dit_b64.decode('utf8'))) +print("Dah (%d):\n%s" % (len(dah_b64), dah_b64.decode('utf8'))) + +# These base64 strings can be directly used to make sound +# in an HTML5 page via javascript using: +# +# var snd = new Audio("data:audio/wav;base64,") +# snd.play() \ No newline at end of file