def main() :
config.ECHO_NEST_API_KEY= "GG0IO4JU1FZQJ0IH1"
clips = file(sys.argv[1], "r")
dataList = []
rate = 12000
channels = 2
for line in clips:
detailArray = line.split('|')
songFile = detailArray[0]
startTime = float(detailArray[1])
duration = float(detailArray[2])
endTime = startTime + duration
n = numpy.array([])
e = echoAudio.AudioData(songFile, n, None, rate, channels)
q = echoAudio.AudioQuantumList(None, "segment", None, e)
a = echoAudio.AudioAnalysis(songFile)
segments = a.segments
finalSeg = segments[len(segments) - 1]
songLength = finalSeg.start + finalSeg.duration
complete = False
while(not complete):
for s in segments:
if((s.start >= startTime) & (s.start <= endTime)):
q.append(s)
if songLength >= endTime:
complete = True
else:
complete = False
endTime = endTime - songLength
p = echoAudio.getpieces(e, q)
dataList.append(p)
clips.close()
echoAudio.assemble(dataList, channels, rate).encode(sys.argv[2])
def render(actions, filename, verbose=True):
"""Calls render on each action in actions, concatenates the results,
renders an audio file, and returns a path to the file"""
pieces = [a.render() for a in actions]
# TODO: allow numChannels and sampleRate to vary.
out = assemble(pieces, numChannels=2, sampleRate=44100, verbose=verbose)
return out, out.encode(filename)
def render(actions, filename, verbose=True):
"""Calls render on each action in actions, concatenates the results,
renders an audio file, and returns a path to the file"""
pieces = [a.render() for a in actions]
# TODO: allow numChannels and sampleRate to vary.
out = assemble(pieces, numChannels=2, sampleRate=44100, verbose=verbose)
return out, out.encode(filename)
def tempo_warp(section, bpm): print "tempo_warp" new_beat_duration = 60.0/bpm beats = song.analysis.beats.that(are_contained_by(section)) new_beats = [] for beat in beats: ratio = beat.duration / new_beat_duration new_beat = st.shiftTempo(song[beat], ratio) new_beats.append(new_beat) out = audio.assemble(new_beats) return out
def main():
try:
in_filename = sys.argv[1]
out_filename = sys.argv[2]
except Exception:
print USAGE
sys.exit(-1)
afile = audio.LocalAudioFile(in_filename)
st = modify.Modify()
beats = afile.analysis.beats
collect = []
for beat in beats:
context = beat.local_context()
ratio = (math.cos(math.pi * 2 * context[0] / float(context[1])) / 2) + 1
new = st.shiftTempo(afile[beat], ratio)
collect.append(new)
out = audio.assemble(collect)
out.encode(out_filename)
def main(inputFilename, outputFilename, swing):
infile = audio.LocalAudioFile(inputFilename)
tats = infile.analysis.tatums
st = modify.Modify()
collect = []
for x in tats:
y, z = x.local_context()
if y < z/2.:
ratio = swing / (((z + 1) // 2) / float(z))
else:
ratio = (1. - swing) / (1 - ((z + 1) // 2) / float(z))
new = st.shiftTempo(infile[x], 1./ratio)
print "Expected:\t%1.3f\tActual: \t%1.3f" % (x.duration * ratio, float(len(new))/new.sampleRate)
collect.append(new)
out = audio.assemble(collect)
out.encode(outputFilename)
def thedownundersafetydance(down_under, safety_dance):
du_sections = down_under.analysis.sections
sd_sections = safety_dance.analysis.sections
collect = []
for n in range(min(len(du_sections), len(sd_sections))):
du_beats = get_beats_from_section(du_sections[n])
sd_beats = get_beats_from_section(sd_sections[n])
process_index = n % 3
if process_index == 0:
new = choppy_choppy(down_under, safety_dance, du_beats, sd_beats)
collect.extend(new)
elif process_index == 2:
new = choppy_choppy(down_under, safety_dance, du_beats, sd_beats, droppy=True)
collect.extend(new)
else:
#new = matchy_matchy(down_under, safety_dance, du_beats, sd_beats)
new = matchy_matchy(safety_dance, down_under, sd_beats, du_beats)
collect.append(new)
out = audio.assemble(collect, numChannels=2)
return out
def main(username):
auds=[]
p = re.compile("mix")
files = os.listdir("f")
for file in files:
m = p.findall(file)
if m:
print "processing f/"+file
try:
auds.append(audio.LocalAudioFile("f/"+file))
except:
print "failed to include "+file
auds.sort(key=keysig)
mixed = []
end = None
previous = None
for aud in auds:
bars = aud.analysis.bars
try:
if end != None and previous != None:
mix = audio.mix(audio.getpieces(previous, [end]), audio.getpieces(aud, [bars[0]]), 0.5)
mixed.append(mix)
else:
mixed.append(audio.getpieces(aud, [bars[0]]))
except:
print "failed to create mix bar"
try:
mixed.append(audio.getpieces(aud, bars[1:-5]))
end = bars[-5]
previous = aud
except:
print "unable to append bars"
out = audio.assemble(mixed, numChannels=2)
out.encode(username+".mp3")
def beatrepeat_and_tempo_warp(section, bpm): print "beatrepeat_and_tempo_warp" beats = song.analysis.beats.that(are_contained_by(section)) tatums = song.analysis.beats.that(are_contained_by(section)) br = audio.AudioQuantumList() new_beat_duration = 60.0/bpm beats = song.analysis.beats.that(are_contained_by(section)) new_beats = [] for beat in beats: ratio = beat.duration / new_beat_duration new_beat = st.shiftTempo(song[beat], ratio) new_beats.append(new_beat) out = audio.assemble(new_beats) return out for _ in range(2): br.append(song[beats[-4]]) br.append(song[beats[-3]]) br.append(song[beats[-2]]) br.append(song[beats[-1]])
def render(actions, filename):
"""Calls render on each action in actions, concatenates the results, renders an audio file, and returns a path to the file"""
pieces = [a.render() for a in actions]
out = assemble(pieces, numChannels=2, sampleRate=44100) # TODO: make these vary.
return out, out.encode(filename)
