1.02

Trying out diffrent libraries which can generate sound in python

pyknon

1. output only as midi
2. has many features

from pyknon.genmidi import Midi
from pyknon.music import NoteSeq
import numpy as np

def angel_trans(grad):
    rad = (grad *np.pi) / 180
    return rad

a simpele major frame in which the melody can play

frame_dur = [0,2,4,5,7,9,11,12]
frame_moll = [0,2,3,5,7,8,10,12]

def roud_to_frame(frame, num):
    array = np.asarray(frame)
    listnr = (np.abs(frame - num)).argmin()
    return frame[listnr]

def mod12(n):
    return n % 12

def note_name(number):
    notes = "C C# D D# E F F# G G# A A# B C".split()
    return notes[mod12(number)]

#--main--

seq = ""
for i in range(-90,270,20):
    sin = np.sin(angel_trans(i))
    normal = (sin+1)*6
    num = roud_to_frame(frame_moll, normal)
    note = note_name(num)
    seq = seq + note + " "

print(seq)
notes1 = NoteSeq(seq)
midi = Midi(1, tempo=120)
midi.seq_notes(notes1, track=0)
midi.write("demo.mid")

C C D D# F G G# A# C C C A# G# G F D# D C

pyfluidsynth

more or less an python api for fluidsynth direct sound output suports several channels with diffrent instruments (Gneral-Midi) todo: ouput as an audio file.

import time
import fluidsynth

fs = fluidsynth.Synth()

#fs.start()
fs.start(driver="alsa")

sfid = fs.sfload("/usr/share/sounds/sf3/MuseScore_General.sf3")
fs.program_select(0, sfid, 0, 33)   #(tracknr , sondfontid, ??, instrumentnr)
print(fs.channel_info(0))

fs.noteon(0, 60, 30)
fs.noteon(0, 67, 30)
fs.noteon(0, 76, 30)

time.sleep(1.0)

fs.noteon(0, 60, 30)
fs.noteon(0, 67, 30)
fs.noteon(0, 76, 30)

time.sleep(1.0)

fs.noteoff(0, 60)
fs.noteoff(0, 67)
fs.noteoff(0, 76)

time.sleep(1.0)

fs.delete()

(1, 0, 33, b'Fingered Bass')

midi2audio

midi to audio converter with FluidSynth

from midi2audio import FluidSynth
fs = FluidSynth('/usr/share/sounds/sf3/MuseScore_General.sf3')
#fs.play_midi('demo.mid')  # This runs FluidSyth with Jack.
fs.midi_to_audio('demo.mid', 'output.flac')

https://raw.githubusercontent.com/schuhva/Music-Generation/master/doc/releases/1.02/output.flac

FluidSynth manualy

problem with midi2audio: onyl over jack sound driver attmpt to change to alsa failed

import subprocess

sound_font = '/usr/share/sounds/sf3/MuseScore_General.sf3'
midi_file = 'demo.mid'
sample_rate = 44100
subprocess.call(['fluidsynth', '-i', sound_font, midi_file, '-r', str(sample_rate), '-a', 'pulseaudio'])

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