def stereo_pan():
synth = WaveSynth()
# panning a stereo source:
wave = Sample("samples/SOS 020.wav").clip(6, 12).normalize().fadein(0.5).fadeout(0.5).lock()
osc = Sine(0.4)
panning = wave.copy().pan(lfo=osc).fadeout(0.2)
with Output.for_sample(panning) as out:
out.play_sample(panning)
# panning a generated mono source:
fm = Sine(0.5, 0.1999, bias=0.2)
wave = synth.triangle(220, 5, fm_lfo=fm).lock()
osc = Sine(0.4)
panning = wave.copy().pan(lfo=osc).fadeout(0.2)
with Output.for_sample(panning) as out:
out.play_sample(panning)
def update(self, *args, **kwargs):
frames = self.wave.readframes(self.samplerate//self.update_rate)
if not frames:
self.pbvar_left.set(0)
self.pbvar_right.set(0)
print("done!")
return
sample = Sample.from_raw_frames(frames, self.samplewidth, self.samplerate, self.nchannels)
self.audio_out.play_sample(sample, async=True)
time.sleep(sample.duration/3) # print the peak meter more or less halfway during the sample
left, peak_l, right, peak_r = self.levelmeter.update(sample)
self.pbvar_left.set(left-self.lowest_level)
self.pbvar_right.set(right-self.lowest_level)
if left > -3:
self.pb_left.configure(style="red.Vertical.TProgressbar")
elif left > -6:
self.pb_left.configure(style="yellow.Vertical.TProgressbar")
else:
self.pb_left.configure(style="green.Vertical.TProgressbar")
if right > -3:
self.pb_right.configure(style="red.Vertical.TProgressbar")
elif right > -6:
self.pb_right.configure(style="yellow.Vertical.TProgressbar")
else:
self.pb_right.configure(style="green.Vertical.TProgressbar")
self.after(self.update_rate, self.update)
def stereo_pan():
synth = WaveSynth()
# panning a stereo source:
wave = Sample("samples/SOS 020.wav").clip(
6, 12).normalize().fadein(0.5).fadeout(0.5).lock()
osc = Sine(0.4)
panning = wave.copy().pan(lfo=osc).fadeout(0.2)
with Output.for_sample(panning) as out:
out.play_sample(panning)
# panning a generated mono source:
fm = Sine(0.5, 0.1999, bias=0.2)
wave = synth.triangle(220, 5, fm_lfo=fm).lock()
osc = Sine(0.4)
panning = wave.copy().pan(lfo=osc).fadeout(0.2)
with Output.for_sample(panning) as out:
out.play_sample(panning)
def update(self, *args, **kwargs):
frames = self.wave.readframes(self.samplerate//self.update_rate)
if not frames:
self.pbvar_left.set(0)
self.pbvar_right.set(0)
print("done!")
return
sample = Sample.from_raw_frames(frames, self.samplewidth, self.samplerate, self.nchannels)
self.audio_out.play_sample(sample)
left, peak_l = self.levelmeter.level_left, self.levelmeter.peak_left
right, peak_r = self.levelmeter.level_right, self.levelmeter.peak_right
self.pbvar_left.set(left-self.lowest_level)
self.pbvar_right.set(right-self.lowest_level)
if left > -3:
self.pb_left.configure(style="red.Vertical.TProgressbar")
elif left > -6:
self.pb_left.configure(style="yellow.Vertical.TProgressbar")
else:
self.pb_left.configure(style="green.Vertical.TProgressbar")
if right > -3:
self.pb_right.configure(style="red.Vertical.TProgressbar")
elif right > -6:
self.pb_right.configure(style="yellow.Vertical.TProgressbar")
else:
self.pb_right.configure(style="green.Vertical.TProgressbar")
self.after(self.update_rate, self.update)
def main(args):
if len(args) < 1:
raise SystemExit(
"Mixes one or more audio files. Arguments: inputfile...")
hqresample = AudiofileToWavStream.supports_hq_resample()
if not hqresample:
print(
"WARNING: ffmpeg isn't compiled with libsoxr, so hq resampling is not supported."
)
wav_streams = [
AudiofileToWavStream(filename, hqresample=hqresample)
for filename in args
]
with StreamMixer(wav_streams, endless=True) as mixer:
mixed_samples = iter(mixer)
with Output(mixer.samplerate, mixer.samplewidth,
mixer.nchannels) as output:
levelmeter = LevelMeter(rms_mode=False, lowest=-50)
temp_stream = AudiofileToWavStream("samples/909_crash.wav",
hqresample=hqresample)
for timestamp, sample in mixed_samples:
levelmeter.update(sample)
output.play_sample(sample)
time.sleep(sample.duration * 0.4)
levelmeter.print(bar_width=60)
if 5.0 <= timestamp <= 5.1:
mixer.add_stream(temp_stream)
if 10.0 <= timestamp <= 10.1:
sample = Sample("samples/909_crash.wav").normalize()
mixer.add_sample(sample)
print("done.")
def update(self, *args, **kwargs):
frames = self.wave.readframes(self.samplerate // self.update_rate)
if not frames:
self.pbvar_left.set(0)
self.pbvar_right.set(0)
print("done!")
return
sample = Sample.from_raw_frames(frames, self.samplewidth,
self.samplerate, self.nchannels)
self.audio_out.play_sample(sample, async=True)
time.sleep(
sample.duration /
3) # print the peak meter more or less halfway during the sample
left, peak_l, right, peak_r = self.levelmeter.update(sample)
self.pbvar_left.set(left - self.lowest_level)
self.pbvar_right.set(right - self.lowest_level)
if left > -3:
self.pb_left.configure(style="red.Vertical.TProgressbar")
elif left > -6:
self.pb_left.configure(style="yellow.Vertical.TProgressbar")
else:
self.pb_left.configure(style="green.Vertical.TProgressbar")
if right > -3:
self.pb_right.configure(style="red.Vertical.TProgressbar")
elif right > -6:
self.pb_right.configure(style="yellow.Vertical.TProgressbar")
else:
self.pb_right.configure(style="green.Vertical.TProgressbar")
self.after(self.update_rate, self.update)
def play_console(filename_or_stream):
with wave.open(filename_or_stream, 'r') as wav:
samplewidth = wav.getsampwidth()
samplerate = wav.getframerate()
nchannels = wav.getnchannels()
bar_width = 60
update_rate = 20 # lower this if you hear the sound crackle!
levelmeter = LevelMeter(rms_mode=False, lowest=-50.0)
with Output(samplerate, samplewidth, nchannels,
int(update_rate / 4)) as out:
while True:
frames = wav.readframes(samplerate // update_rate)
if not frames:
break
sample = Sample.from_raw_frames(frames, wav.getsampwidth(),
wav.getframerate(),
wav.getnchannels())
out.play_sample(sample, async=True)
levelmeter.update(sample)
time.sleep(
sample.duration * 0.4
) # print the peak meter more or less halfway during the sample
levelmeter.print(bar_width)
print("\ndone")
input("Enter to exit:")
def __next__(self):
frames = self.source.readframes(self.buffer_size)
for filter in self.frames_filters:
frames = filter(frames)
if not frames:
return None
sample = Sample.from_raw_frames(frames, self.samplewidth, self.samplerate, self.nchannels)
for filter in self.filters:
sample = filter(sample)
return sample
def __next__(self):
frames = self.source.readframes(self.buffer_size)
for filter in self.frames_filters:
frames = filter(frames)
if not frames:
return None
sample = Sample.from_raw_frames(frames, self.samplewidth,
self.samplerate, self.nchannels)
for filter in self.filters:
sample = filter(sample)
return sample
def generate_sample(self, oscillator, duration, use_fade=False):
o = oscillator # iter(oscillator)
scale = 2**(8*self.synth.samplewidth-1)
try:
frames = [int(next(o)*scale) for _ in range(int(self.synth.samplerate*duration))]
except StopIteration:
return None
else:
sample = Sample.from_array(frames, self.synth.samplerate, 1)
if use_fade:
sample.fadein(0.05).fadeout(0.1)
return sample
def generate_sample(self, oscillator, duration, use_fade=False):
o = oscillator # iter(oscillator)
scale = 2**(8*self.synth.samplewidth-1)
try:
frames = [int(next(o)*scale) for _ in range(int(self.synth.samplerate*duration))]
except StopIteration:
return None
else:
sample = Sample.from_array(frames, self.synth.samplerate, 1)
if use_fade:
sample.fadein(0.05).fadeout(0.1)
return sample
def echo_lfo():
synth = WaveSynth(22050)
s = Sine(440, amplitude=25000, samplerate=synth.samplerate)
s = EnvelopeFilter(s, .2, .2, 0, 0, 1.5, stop_at_end=True)
s = EchoFilter(s, .15, 5, 0.3, 0.6)
s = ClipFilter(s, -32000, 32000)
frames = [int(v) for v in s]
import matplotlib.pyplot as plot
plot.plot(frames)
plot.show()
samp = Sample.from_array(frames, synth.samplerate, 1)
with Output.for_sample(samp) as out:
out.play_sample(samp)
def echo_lfo():
synth = WaveSynth(22050)
s = Sine(440, amplitude=25000, samplerate=synth.samplerate)
s = EnvelopeFilter(s, .2, .2, 0, 0, 1.5, stop_at_end=True)
s = EchoFilter(s, .15, 5, 0.3, 0.6)
s = ClipFilter(s, -32000, 32000)
frames = [int(v) for v in s]
import matplotlib.pyplot as plot
plot.plot(frames)
plot.show()
samp = Sample.from_array(frames, synth.samplerate, 1)
with Output.for_sample(samp) as out:
out.play_sample(samp)
def set_effect(self, effect_nr, filename):
try:
with AudiofileToWavStream(filename, hqresample=hqresample) as wav:
sample = Sample(wav)
self.effects[effect_nr] = sample
except IOError as x:
print("Can't load effect sample:", x)
else:
for button in self.buttons:
if button.effect_nr == effect_nr:
button["state"] = tk.NORMAL
button["text"] = os.path.splitext(
os.path.basename(filename))[0]
break
def do_button_release(self, event):
if event.state & 0x0100 == 0:
return # no left mouse button event
shift = event.state & 0x0001
if shift:
filename = tkinter.filedialog.askopenfilename()
if filename:
with AudiofileToWavStream(filename,
hqresample=hqresample) as wav:
sample = Sample(wav)
self.jingles[event.widget.jingle_nr] = sample
event.widget["state"] = tk.NORMAL
event.widget["text"] = os.path.splitext(
os.path.basename(filename))[0]
else:
sample = self.jingles[event.widget.jingle_nr]
if sample:
self.app.play_sample(sample)
def __iter__(self):
"""
Yields tuple(timestamp, Sample) that represent the mixed audio streams.
"""
while True:
mixed_sample = Sample.from_raw_frames(b"", self.samplewidth, self.samplerate, self.nchannels)
for sample_stream in self.sample_streams:
try:
sample = next(sample_stream)
except (os.error, ValueError):
# Problem reading from stream. Assume stream closed.
sample = None
if sample:
mixed_sample.mix(sample)
else:
self.remove_stream(sample_stream)
yield self.timestamp, mixed_sample
self.timestamp += mixed_sample.duration
def play_console(filename_or_stream):
with wave.open(filename_or_stream, 'r') as wav:
samplewidth = wav.getsampwidth()
samplerate = wav.getframerate()
nchannels = wav.getnchannels()
bar_width = 60
update_rate = 20 # lower this if you hear the sound crackle!
levelmeter = LevelMeter(rms_mode=False, lowest=-50.0)
with Output(samplerate, samplewidth, nchannels, int(update_rate/4)) as out:
while True:
frames = wav.readframes(samplerate//update_rate)
if not frames:
break
sample = Sample.from_raw_frames(frames, wav.getsampwidth(), wav.getframerate(), wav.getnchannels())
out.play_sample(sample, async=True)
levelmeter.update(sample)
time.sleep(sample.duration*0.4) # print the peak meter more or less halfway during the sample
levelmeter.print(bar_width)
print("\ndone")
input("Enter to exit:")
def __iter__(self):
"""
Yields tuple(timestamp, Sample) that represent the mixed audio streams.
"""
while True:
mixed_sample = Sample.from_raw_frames(b"", self.samplewidth,
self.samplerate,
self.nchannels)
for sample_stream in self.sample_streams:
try:
sample = next(sample_stream)
except (os.error, ValueError):
# Problem reading from stream. Assume stream closed.
sample = None
if sample:
mixed_sample.mix(sample)
else:
self.remove_stream(sample_stream)
yield self.timestamp, mixed_sample
self.timestamp += mixed_sample.duration
def play_console(filename_or_stream):
with wave.open(filename_or_stream, 'r') as wav:
samplewidth = wav.getsampwidth()
samplerate = wav.getframerate()
nchannels = wav.getnchannels()
bar_width = 60
update_rate = 20 # lower this if you hear the sound crackle!
levelmeter = LevelMeter(rms_mode=False, lowest=-50.0)
with Output(samplerate, samplewidth, nchannels) as out:
print("Audio API used:", out.audio_api)
if not out.supports_streaming:
raise RuntimeError("need api that supports streaming")
out.register_notify_played(levelmeter.update)
while True:
frames = wav.readframes(samplerate//update_rate)
if not frames:
break
sample = Sample.from_raw_frames(frames, wav.getsampwidth(), wav.getframerate(), wav.getnchannels())
out.play_sample(sample)
levelmeter.print(bar_width)
print("\ndone")
input("Enter to exit:")
def main(track_file, outputfile=None, interactive=False):
discard_unused = not interactive
if interactive:
repl = Repl(discard_unused_instruments=discard_unused)
repl.do_load(track_file)
repl.cmdloop("Interactive Samplebox session. Type 'help' for help on commands.")
else:
song = Song()
song.read(track_file, discard_unused_instruments=discard_unused)
with Output() as out:
if out.supports_streaming:
# mix and stream output in real time
print("Mixing and streaming to speakers...")
out.play_samples(song.mix_generator(), False)
print("\r ")
else:
# output can't stream, fallback on mixing everything to a wav
print("(Sorry, streaming audio is not possible, perhaps because you don't have pyaudio installed?)")
song.mix(outputfile)
mix = Sample(wave_file=outputfile)
print("Playing sound...")
out.play_sample(mix)
