-
Notifications
You must be signed in to change notification settings - Fork 0
/
countin.py
32 lines (25 loc) · 1 KB
/
countin.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
import pyaudio
import numpy as np
import time
class CountIn():
def __init__(self):
self.p = pyaudio.PyAudio()
self.volume = 1
self.sampling_rate = 44100
self.duration = 0.1
self.f = 440.0
# Replace self.sampling_rate with 440 in (self.sampling_rate*self.duration) for 'Click'
self.wave = (np.sin(2 * np.pi * np.arange(self.sampling_rate * self.duration) * self.f / self.sampling_rate)).astype(np.float32)
def count(self, count_val, bpm):
for count in range(count_val):
stream = self.p.open(format=pyaudio.paFloat32,
channels=1,
rate= self.sampling_rate,
output=True)
stream.write(self.volume * self.wave)
stream.stop_stream()
bpm_spacing = self.__calc_bpm_spacing(bpm)
time.sleep(bpm_spacing)
stream.close()
def __calc_bpm_spacing(self, bpm):
return np.linspace(0, 60, bpm)[1]